Duct Leakage Testing is a Must


A recent survey of the building construction industry by the Building Commissioning Association (BCA) on the issue of duct leakage resulted in some startling statistics. Seventy-five percent of the approximately 300 respondents felt that duct leakage contributes substantially to energy loss in commercial buildings. And, 74% of the respondents also believed most of the buildings in the U.S. have significant duct leakage (greater than 15%). Duct leakage can significantly increase the energy consumption of a building, leading to increased energy bills for the owner. It increases energy costs and can result in occupant discomfort and lower productivity. This combination can transform a building intended to be a high performing building into a building that is not. So, what can be done to combat duct leakage? Test early and test often.

As a commissioning provider for high performing buildings, we observe many instances of duct leakage in both new and existing buildings. The top factors for duct leakage issues are inadequate sealing of duct joints and access doors or panels, which are related to quality of duct installation workmanship, and over-pressurization of the air distribution system resulting in duct seam separation, which is related to HVAC system control. Many owners do not include commissioning, which can identify performance issues such as lack of testing requirements in the design specifications and building performance issues that occur during the design, construction, and operational phases of a project.

Where new building codes (2010 and later) have been adopted, some duct leakage testing requirements exist. However, many states have yet to adopt the newer codes. While these new codes are beginning to require duct leakage testing, they only require 25% of the high- and medium-pressure duct be tested. As a result, duct leakage testing appears to be hit or miss when it comes to newly constructed buildings. Though a project designer can specify the required sealing level for each duct type, the only way to verify the effectiveness of the duct sealing is by duct leak testing.

It is important that design professionals specify duct leakage testing and have the commissioning provider observe duct leak testing of high- and medium-pressure ductwork in accordance with SMACNA’s HVAC Air Duct Leakage Test Manual. It is also important that the commissioning provider evaluate the building’s controls.

Allowable duct leakage rates specified are around 10%. However, for high performing buildings, designers may elect to reduce the allowable leakage amount in an effort to further reduce the energy consumption of the air moving systems. By specifying SMACNA duct leakage testing for medium- and high-pressure air duct systems integrated with commissioning in their projects, design professionals can be confident that their building will meet the high performing requirements of the owner.

The survey by the BCA also noted that a majority of respondents felt duct leakage is most prevalent in existing buildings. This should come as no surprise to individuals in the building industry. Many of the existing buildings that are prime candidates for services such as energy audits or retro-commissioning were built 15 or more years ago. Even if duct leakage testing was performed when the buildings were constructed, the sealant materials can be either near the end of their useful life or have begun to deteriorate, which leads to increased duct leakage.

Typical building maintenance programs do not include observations and maintenance of the duct sealants, and even if they did it would be nearly impossible for all seams and joints to be evaluated, let alone resealed from the exterior. What is the answer? Very cost-effective products that can be applied to the interior of the air distribution system that can seal most air loss paths. Maintaining a sealed air distribution system should be included in a building’s operation and maintenance (O&M) budgets, similar to sealants for the building enclosure. This is a simple way for building owners to keep their buildings’ energy consumption low.

If owners elect to have energy audit or retro-commissioning services performed on their building, they should require that these professionals evaluate the leakage of the existing ductwork. This can provide the owner with a low-cost energy measure that can potentially have a very low payback period.

It is clear to the building industry that duct leakage is an issue. For buildings looking to be labeled as high performing buildings, it can be a significant issue. Therefore, it is imperative that engineers require duct leak testing and that commissioning providers ensure duct leakage is minimized. The simplest way to stop or significantly reduce duct leakage is to require testing and verification of the air distribution and exhaust systems’ installation and HVAC control function through the design and commissioning process.

Source: Aeroseal; written by H. Jay Enck, Member ASHRAE, HBDP, BEAP, CPMP, CxAP, LEED Fellow, is cofounder and chief technical officer and David Cantrill, P.E., Member ASHRAE, BEAP, CCP, is branch manager, commissioning authority and project manager with Commissioning and Green Building Solutions, Inc.

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).


What’s In Your Home’s Air Ducts?


You probably have given very little thought to your home’s air ducts. They’re just there, doing their job blowing warm or cool air throughout your home. No problem, right? Well, considering the average home in America is 35 years old, chances are there are years of build-up in your home’s air ducts. Just what could be inside of your home’s air ducts? Read on to discover some the weirdest things professional air duct cleaners have found on the job.

A few years ago, during a cleaning job, we found a box behind a register that contained $400 of Confederate money. We gave it to the homeowner and she gave it to her children, who cashed it out. That $400 of Confederate money ended up being worth $100,000!

We got a call from a customer saying they had a mysterious odor in the home. Our technicians went into the home and they definitely smelled something very strong, but couldn’t find anything obvious at the start. Finally, they took off the vent covers and found a dead skunk!

We do a lot of post-construction after homes are built, especially townhouses, and one thing we find a lot of is pee bottles used by workers during construction. It’s gross, but they’re everywhere, on every job. During a cleaning, one of those bottles got sucked up into our negative air machine, went through the blower blade and sprayed everywhere outside. It was really disgusting.

We were cleaning ductwork and in the basement of the establishment, there was a kitchen with a grill. Right above that was the bulkhead with an air duct blowing right over the grill, which we were cleaning. We took off the supply duct, shined a light in there and, low and behold, there was a giant, dead rat. In the course of cleaning, the gentleman befriended us and offered to make us lunch on the grill. We politely declined the offer.

We had posted a video of a cleaning job to our social media account and someone commented on it, “Wow, did you see the dollar bill get sucked in there?” The trunk line was really full of all kinds of junk, so I thought “Well, I’m not surprised that there was a dollar bill in that mess.” Later on, someone commented, “That wasn’t a dollar bill, that was a $100 bill!” I went into the truck and sifted through all the garbage to try to find it, but no luck.

We did a cleaning on an old rail car and found a pre-Civil War whiskey bottle stashed away in the ducts of the rail car. The bottle is now sitting a museum somewhere.

View the following 3 crazy but true videos!

Crazy Duct Cleaning Stories Part 1:
https://www.youtube.com/watch?v=gUKczIYqYog

Crazy Duct Cleaning Stories Part 2:
https://www.youtube.com/watch?v=zx2mlvg2hkI

Crazy Duct Cleaning Stories Part 3:
https://www.youtube.com/watch?v=STe_qnFhjfU

Source: National Air Duct Cleaners Association (NADCA)

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at
1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Heating and Air Conditioning Maintenance

The warm summer weather is just starting in the northeast, and that means checking to make sure your air conditioner is in good working order. None of us want to experience an inefficient AC that costs money but doesn’t deliver—or worse, an AC BREAKDOWN in our home or office on a 90 degree day!

Following are 5 tips on how to keep your air conditioning system running efficiently:

• Test pipe or tubing joints or connections for leaks, using pressure gauge or soap-and-water solution.
• Test electrical circuits or components for continuity, using electrical test equipment.
• Repair or replace defective equipment, components, or wiring.
• Discuss heating or cooling system malfunctions with users to isolate or to verify that repairs corrected malfunctions.
Repair or service heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, or refilling non-toxic refrigerants. 

Source: The Occupational Information Network (O-NET); O-NET was developed under the sponsorship of the U.S. Department of Labor/Employment and Training Administration (USDOL/ETA).

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at
1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Why Clean Air Ducts? Answer: Because They Get Dirty

In addition to normal accumulations of dust and dirt found in all homes with air ducts, there are several other factors that can increase the need for regular HVAC system cleaning:

  • pets
  • occupants with allergies or asthma
  • cigarette or cigar smoke
  • water contamination or damage to the home or HVAC system
  • home renovation or remodeling projects

Some occupants are more sensitive to these contaminants than others. Allergy and asthma sufferers, as well as young children and the elderly tend to be more susceptible to the types of poor indoor air quality that air duct cleaning can help address.

Watch the Video:
https://www.youtube.com/watch?v=Rh1JspTY2uU

NADCA’s rule of thumb for consumers is that “if your air ducts look dirty, they probably are,” and that dirty HVAC systems should be inspected by a reputable, certified HVAC professional. Below are some other reasons homeowners choose to have their air ducts cleaned.

Indoor Air Quality

Indoor air quality is one concern that homeowners have when they decide to investigate air duct cleaning. Your heating and cooling system is the lungs of your home. The system takes air in and breathes air out.

Through normal occupation in a home, we generate a great deal of contaminants and air pollutants, such as dander, dust, and chemicals. These contaminants are pulled into the HVAC system and re-circulated 5 to 7 times per day, on average. Over time, this re-circulation causes a build-up of contaminants in the duct work.

While dirty ducts don’t necessarily mean unhealthy air in your home, school or workplace, they may be contributing to larger health issues or harboring contaminants that could cause serious problems for people with respiratory health conditions, autoimmune disorders or some environmental allergies.

Watch the Video:
https://www.youtube.com/watch?v=LOEssctNLZU

Energy Savings

According to the U.S. Department of Energy, 25 to 40 percent of the energy used for heating or cooling a home is wasted. Contaminants in the heating and cooling system cause it to work harder and shorten the life of your system. Although filters are used, the heating and cooling system still gets dirty through normal use.

When an HVAC system is clean, it doesn’t have to work as hard to maintain the temperature you desire. As a result, less energy is used, leading to improved cost-effectiveness.

Watch the Video:
https://www.youtube.com/watch?v=hImvxVyZvQE

Source: National Air Duct Cleaners Association (NADCA)

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

 

40 Amazing HVAC Industry Trends

Heating, ventilation, and air conditioning are what make up the HVAC industry. It’s something that you’ll find in buildings, homes, and even vehicles. We often take these needs for granted, wanting to turn on the heat when we’re cold or the A/C when we’re warm. For owners or operators, the HVAC industry has trends, which must be followed to keep a building healthy.

Regulations drive HVAC industry trends. In the northern US, furnaces must have a 90% efficiency rating, but in southern states, only an 80% efficiency rating is required.

This means HVAC industry trends tend to be fueled by local and regional data instead of an overall set of trends. To discover what is in store for this industry, we must look at emerging technologies, integration, and how local regulations are evolving to get a picture of what to expect in the days and years to come.

The HVAC Industry is Getting a Whole Lot Smarter

  • Many within the HVAC industry are beginning to automate their sales and service processes, allowing them to cut their customer acquisition costs to keep pricing competitive.
  • Smarter technologies, such as they use of smartphone apps, allow building managers to control lighting, ventilation, and other processes with one control point.
  • Better measurements of building environments thanks to the collection and mining of big data and analytic information will allow for more efficient HVAC systems to be installed in the future.
  • At the local level, HVAC contractors will also be using software, SEO, widgets, and other online tools and strategies to help connect with local customers who are researching their system.
  • Mobile solutions will continue to drive innovation within the HVAC industry as more potential customers look to meet their needs through the use of tablets, smartphones, or tablet PCs.
  • As HVAC systems continue to develop innovative, but complex, solutions for buildings, consumers are expected to continue turning toward mobile technologies to set up preventative maintenance and service programs.

There will always be a need for the HVAC industry. The real question of the hour is this: how much demand is this industry expected to see year after year? Much of that will depend on how much innovation can be achieved within the industry. As the world continues to globalize, more information than ever before is at the fingertips of consumers. They can research best practices, installation techniques, and they want mobility like never before.

The Relationship Between Construction and HVAC

  • An increase in new building construction will always provide a similar increase of HVAC unit installations.
  • In both residential and non-residential, HVAC equipment installation are expected to be on the rise in the coming year.
  • From 2014 data, the spending on construction projects for non-residential use rose 4.2% from the year before. In 2016, up to 7% growth could occur.
  • Lodging construction projects with a need for HVAC unit installations saw an increase of 11.3%.
  • Office and commercial construction projects saw increases of 14.7% and 8.4% respectively.
  • Even sewage disposal construction projects with a need for HVAC components saw an increase of 13.6%.
  • Residential storage heater shipments have seen increases of over 20% in the past 5 years for total shipments.
  • Warm air furnace shipments have seen nearly a 23% increase thanks to the increases seen in new construction projects.

Once an HVAC system is installed, it generally needs maintenance only. This creates two unique sectors within the HVAC industry. On one hand, you have the installers who need new construction in order to find the revenues that will keep them in business. On the other hand, you have maintenance and repair personnel who receive an expanded customer base with every new system that is installed. Although the maintenance sector can still thrive when there is limited new construction, the industry as a whole sees a decline and that affects everyone’s revenues. This is why the relationship between the construction and HVAC industries is so critical.

How HVAC Innovations Are Inspiring New Trends

  • Electronic air cleaners are 40x more efficient than a standard filter you would throw away to remove unwanted particles from the air.
  • Rightsizing, system updating, and types of refrigerant used can significantly affect HVAC efficiency.
  • Variable speed heat pumps can help to trim monthly costs by up to 40% for homeowners.
  • Proper insulation for a home or building on its own can improve HVAC efficiencies by up to 30%.
  • 75% of the utility costs of a home come from power that is used for home electronics that are being kept in a “standby” or “off position,” including HVAC equipment.
  • Heating and air conditioning are two of the three most common expenditures for building owners today.
  • A properly maintained air conditioning system will last 10-15 years, depending on the manufacturer and if it was properly installed.
  • Filters must be changed every 2-3 months at minimum to maintain the efficiency of an HVAC system, which helps to fuel ongoing supportive revenues for the industry.
  • Ductless HVAC systems could come to represent up to 15% of the total industry revenues in the next 5 years.

Did you know that someone who lives in a home with air conditioning actually loses some tolerance for heat? Not that this is necessarily a bad thing, but it does go toward showing the importance of installing and using an innovative HVAC system for comfort purposes. With the average system operating at full efficiencies for 10-15 years, it is up to each owner or operator to find a qualified technician in their area to maintain their system. Otherwise the cost of a new HVAC system might come around sooner than necessary, and although that’s not a bad thing for industry revenues, it does take money out of your pocket unexpectedly. We always think our HVAC system will be useful, but if we don’t pay attention to new trends, we could be paying a lot more than expected.

The Global HVAC Industry

  • Analysts forecast HVAC equipment market in China to grow at a CAGR of 8.51% through 2019.
  • The global HVAC industry is expected to have a 4.34% CAGR through 2022. This is expected to generate total revenues of nearly $70 billion in total.
  • Asia-Pacific continues to be the leading revenue generator in the global HVAC market thanks to the increase in demand for split-air conditioners.
  • Global demands for HVAC equipment are expected to increase by 6% annually through 2020.

Both the mature markets for the HVAC industry and the developing markets have a lot of potential. It’s the new construction opportunities in the mature markets, which are fueling new revenues, while in the developing markets, it is innovative products and technician maintenance and/or installation. Although the HVAC market isn’t one of the larger markets in the world today, it is still a solid contributor to local and regional economies and that is why a healthy industry is so important.

HVAC Industry Forecasts

  • The total HVAC industry in the United States is expected to see around $60 billion in revenues in the next 12 months.
  • Industry revenues within the HVAC industry have been growing steadily at a 1% annualized rate since 2008.
  • 28% of the HVAC industry is comprised of single-family homes. Another 6.1% of the industry serves apartment buildings.
  • The healthcare industries contribute just over 13% of the total revenues that are collected by the HVAC industry annually.
  • Manufacturing and industrial applications [10.5%] are just slightly higher than office building applications [10.1%] in terms of HVAC revenues.
  • Demand for HVAC equipment is forecast to increase 6.8% annually through 2019 to reach a total of $20.4 billion.
  • Shipments of HVAC equipment are expected to grow at 6% per year through 2019 to $16.5 billion.
  • Imports are expected to account for a growing share of the demand for all HVAC products, exceeding 25% of the total demand for the first time ever in 2019.
  • 44% of HVAC sales will continue to be unitary air conditioners, which are consistently the largest share of the demand this industry sees.
  • Heat pumps and warm air furnaces are expected to see the highest levels of total growth in the industry.

When the recession started in late 2007, the HVAC industry took the same hit as the construction industry, but their pain didn’t make the mainstream media as often. The recovery being experienced within the industry is still continuing to build slowly, but at least the industry has come to the point where they have a positive annualized growth since 2008 at this point, even if it is at just 1%. The future looks very bright for the HVAC industry. Hopefully another recession won’t come along to damage the progress that has been made in recent years.

Source: Aeroseal; originally written by Brandon Gaille.

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Aeroseal Commercial: Frequently Asked Questions

Why should ducts in commercial buildings be sealed?  How much energy does the sealing process save?  How does Aeroseal work?  These are the questions we hear a lot and you’ll find the answers below.  If you have any other questions please do not hesitate to contact us – we’re here to help!

Why Should Ducts in Commercial Buildings Be Sealed?  

Duct sealing in commercial buildings cost-effectively saves energy, improves air balance and thermal distribution (comfort and ventilation), and helps comply with building codes and specification for air distribution effectiveness.

How Much Energy Does the Sealing Process Save?

Energy savings are different for each building and HVAC system and obviously depend upon the initial air duct tightness. The Aeroseal Energy Savings Excel spreadsheet can be used to estimate the savings for most types of buildings.

In smaller commercial buildings with air ducts outside the insulation barrier of the building, energy savings can be as much as 30% of HVAC energy use. In large buildings Aeroseal duct sealing can reduce fan-system energy use by as much as 40% and reduce heating and cooling costs by as much as 10%.

As a rough estimate, simple paybacks typically range from 3 to 7 years. In some cases building owners have recovered the investment in Aeroseal duct sealing in less than 18 months.

Is the Sealant Used in Aeroseal Safe?

The sealant material has been certified to UL1381, the industry standard for aerosol duct sealants. It is tested to rigorous requirements for flammability, smoke inhibition, mold growth and durability. The sealant has no OSHA Exposure Limit and no special precautions are required during application. It cures in less than two hours and meets LEED requirements for low VOC emissions.

The dried sealant material is primarily vinyl acetate polymer (VAP), which has been used in chewing gums, latex paints and hair sprays.

How Long Will the Seals Last?

The sealant has a life of over 30 years. Scientists at Lawrence Berkeley National Laboratory tested the performance of Aeroseal seals for 4 years under accelerated conditions, and were never able to observe a failure. This corresponds to 100,000 cycles under more severe temperatures and pressures than are found in duct systems.

How Do I Know if the Ducts in My Building Need to be Sealed?

The duct leaks can be uncovered several ways. Aeroseal has developed a simple survey that can accurately predict if an air distribution system is leaking excessively. Another method is to review a Test and Balance Report and compare the flow at the HVAC system supply or return fans and sum of the flows measures at the supply diffusers or return grilles. Testing a sample of duct sections for leakage is an accurate way to identify if ducts are too leaky. Aeroseal technicians regularly perform this test.

How Does the Aeroseal Process Work?

The Aeroseal process seals duct leaks from the inside, using small sealant particles that deposit at the leaks without coating the interior of the duct system.

This is accomplished by pressurizing the duct system with a fog of sealant particles sized to stay suspended in the air until they try to exit the duct system. By blocking all of the intentional openings in the duct system (i.e., diffusers or grilles), all of the sealant-laden air is forced out through to the leaks. As the duct pressure causes the particles to accelerate through the leaks, they stick to the edge and build upon each other until the leaks are sealed. By constantly monitoring the duct pressure and flow, the process-control computer calculates and the displays the remaining leakage in real time. When the sealing is finished, a complete minute-by-minute record of the process is printed, stored on the local computer, and then uploaded over the internet for archival on the Aeroseal server.

How Large of a Leak Can Be Sealed?

Aeroseal recommends sealing the leaks up to 5/8 inches across. Leaks more than one inch across can be sealed, however the sealing rate varies with the size of the leak times itself. In other words, the sealing time for a 1″ leak is 64 times longer than that for a leak 1/8″ across.

Practically speaking, leaks larger than about 5/8″ across are better suited to be sealed manually if possible.

What Types of Ducts Can Be Sealed?

Aeroseal is capable of sealing all types of ductwork. It has been successfully applied in rigid metal and flexible air ducts. It has been applied in duct with internal insulation. It has also been installed in duct systems fabricated of ductboard, drywall or masonry blocks.

Aeroseal avoids sealing through VAV boxes or fire/smoke dampers.

Do Ducts Need to Be Cleaned Prior to Sealing?

Extremely dirty ducts should be cleaned.  We recommend that the technician assess the condition of ducts prior to beginning to Aeroseal process.

Source: Aeroseal

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at
1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

 

How Aeroseal works in Commercial Building

The following video chronicles a light commercial duct-sealing project from start to finish. It follows the steps involved from unloading the equipment to the final certificate of completion.

https://www.youtube.com/watch?v=Ut-BkBvExVY&sns=em

Aeroseal duct sealing is used in commercial buildings around the world to increase energy efficiency and improve comfort and indoor air quality.   This video takes you inside a typical commercial duct-sealing project, highlighting the steps involved in using this safe and easy-to-administer process.

By sealing from inside the ducts, Aeroseal is most effective and least invasive duct sealing solution available.

How Aeroseal Helps Commercial Clients Everywhere:

Aeroseal is the best solution for a large range of Commercial building problems. Whether the problem is energy consumption, poor indoor air quality, or commissioning the HVAC system, Aeroseal is up to the job.

High Energy Consumption

If you want to reduce your energy consumption without a large capital expenditure, you should consider having your ducts tested for leakage.

Duct leakage can more than double fan energy use, and increase heating and cooling costs significantly. According to ASHRAE, just a 20% leakage in an exhaust system can increase fan energy use by 95%.  Your energy savings potential is magnified by the fact that excess flow due to leakage often creates uncontrolled air infiltration through the building envelope or excess outside air intake through the HVAC system.

The investment in Aeroseal duct sealing is typically recovered in 3-7 years.  According to the U.S Department of Energy and several other sources, Aeroseal duct sealing is one of the best energy saving solutions for property owners – and one of the most cost effective.

Poor Exhaust from Desired Areas

Duct leakage has been linked to bad Indoor Air Quality, poor humidity control and health hazards such as sick building disease and the spread of mold and other contagions within the building.

If you are having trouble getting the correct air changes per hour or trouble pressurizing some zones within your building, it could be due to duct leakage. When 20% or more of the air that is passing through your ducts is leaking out, it is not surprising that some of the zones are not getting enough air.

In tall buildings seasonal stack effects and wind loading often increase the ventilation problems from improperly sealed toilet and kitchen exhaust systems.  Buildings with self-regulating exhaust dampers are particularly prone to excessive energy consumption and poor indoor air quality associated with leaking exhaust shafts.

Problems Identified During Building Commissioning

In a recent survey, over 74% of commissioning professionals agreed that buildings have significant duct leakage.

If the HVAC cannot be properly balanced or you are not getting adequate flows through some supply diffusers or return grilles, you should consider getting your duct system sealed with Aeroseal. Aeroseal is able to seal leaks in otherwise inaccessible duct systems is both new and existing buildings.

Problems Identified by Test and Balance Report

If a Test and Balance report shows that you are not getting adequate flows to some grilles, or that the grille flows do not add up to the flow at the fan, you should consider getting your duct system sealed with Aeroseal. Aeroseal is able to seal leaks in otherwise inaccessible duct systems is both new and existing buildings.

Increased Cooling or Heating Capacity Needs

If your cooling or heating needs have increased, perhaps due to higher occupancy, you may be able to meet the increased needs simply by sealing the leaks in your duct system.

If your ducts are leaking 20% of the air that they are supposed to be delivering to the zones, simply sealing those leaks can increase your ability to cool zones with increased cooling loads. Aeroseal generally seals 80-90% of the leakage encountered.

Source: Aeroseal

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

The Homeowner’s Guide – Why Choose a NADCA Member?

NADCA Members Follow the Industry Standard

NADCA sets the industry standard for HVAC system cleaning. When done correctly, HVAC cleaning is a very beneficial service for your home. NADCA’s dedication to quality promotes a higher standard of performance for all of its members—which can help give homeowners peace of mind.

In order to become a NADCA member, a company must:

Have at least one NADCA certified Air Systems Cleaning Specialist (ASCS) on staff.

Maintain general liability insurance.

Agree to clean according to ACR, the NADCA Standard.

Comply with NADCA’s Code of Ethics.

All ASCS certified individuals must acquire continuing education credits to maintain certification each year.

Finding a QUALIFIED Contractor

NADCA provides the following tips to help homeowners hire a qualified contractor for their HVAC system and air duct cleaning needs.

Qualifications

Ask for proof of NADCA membership and certification and visit NADCA’s find a Professional Directory at www.nadca.com to verify NADCA membership.

Ask for proof of insurance.

Make sure the contractor can provide proof of proper license(s), as applicable.

Assessment

Ask the contractor to assess and explain the service to be provided.

Ask the contractor to specify which components will be cleaned as part of the service, such as the air ducts (the supply and return), coils, drains, registers, grills, etc.

Verify that the contractor will limit the release of dust, dirt and debris into your home during the cleaning.

Make certain that the contractor will use both agitation and vacuum collection while cleaning.

Ask the contractor to inform you if any chemicals will be used as part of the cleaning, and provide a safety data sheet for products used.

Questions? Be Sure to Ask Your Contractor!

Source: The National Air Duct Cleaners Association (NADCA)

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Contact us for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs: 1-800-931-6653 or email info@aspenenvironmentalservices.com.

Aspen Air Duct Cleaning is an approved Aeroseal Dealer.

American Dental Association Improves Ventilation, Meets Code with Aeroseal

For the past decade, Mike Kosinski and his team of experts at CEPro Inc. have been taking great care of the historic ADA building on Chicago’s Near North Side. Built in 1965, the 23-story skyscraper has undergone numerous upgrades and renovations, but none as transformative as those being planned for the building’s 4th-floor medical laboratory. Unfortunately, leaks in risers that connect the labs fume hoods to two rooftop fans were making adequate ventilation impossible. Not able to meet stringent exhaust code specification, some of the fume hoods were simply rendered inoperable. Without a solution to the problem, laboratory renovation was impractical. Talks of having to relocate the entire facility had begun to surface.

Each of the building risers were actually encased in individual concrete structures that draped over the side of the building’s exterior. That meant accessing the enclosed ductwork to seal the leaks would require nothing less than major building demolition. With no alternative, the leaks continued to plague the facility.

In Brief

  • Building: American Dental Association Building
  • Location: Chicago, Illinois
  • Building Managers: CEPro Inc.
  • Aeroseal Contractor: Airways Systems Inc.
  • Goal: Meet code for proper lab fume hood operations
  • Before Aeroseal: 2,733.00 CFM of leakage
  • After Aeroseal: 606 CFM of leakage
  • Results: Aeroseal eliminated 2,127 CFM of leakage. With proper exhaust now possible, all fume hoods are back up and operational. Renovation on schedule.

That’s when CEPro’s Mike Wessel, learned about a new approach to duct sealing that worked from the inside of the duct to find and seal leaks. After initial research and explanatory meetings with building management, Wessel got the go-ahead for a preliminary duct-sealing project. Airways Systems’ Joe St. Pierre got the call and soon, he and his team arrived on site to seal 3 of the leaky shafts.

When finished, the print out report generated by the Aeroseal system provided immediate results – Aeroseal reduced leakage by as much as 94.5%. A week later, Joe got the go ahead to seal the rest of the leaky shafts. In the end, Joe and his team reduced leakage by more than 2,000 CFM, more than enough to meet code and get all fume hoods up and operational. Renovation of the ADA lab is back on the schedule and moving forward.

Testimonial

My story is simple. I was skeptical that the Aerosealing would work. I watched the process and found it magical because it was so simple. And in the end, we went from having doubting clients to having customers that were gleeful and happy, bristling with excitement because their life just got infinitely easier.”

There was simply no other practical solution. If not for the Aeroseal, we would be moving the lab right now, incurring millions of dollars to change strategy and writing off millions in investment that had already been made in the building. Aeroseal extended the life of their investment – I can’t even estimate the total cost savings this represents.”

Michael Wessel
Project Engineer
CEPro, Inc.

Source: Aeroseal

Please contact Aspen Air Duct Cleaning, an approved Aeroseal Dealer, at

1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Overview of the Air Duct Cleaning Process


NADCA members are accustomed to handling a variety of projects for commercial and industrial buildings. NADCA’s presence in the commercial HVAC industry is growing steadily as education about our members’ services grows. It is becoming increasingly common for project proposals to specify the presence of an ASCS certified individual on a commercial job.

When hiring a NADCA member, an optimal level of performance should be expected. Technicians are required to adhere to the industry’s standards and guidelines, and inform the client of any obstacles that may prevent doing so. NADCA members are able to able to answer most questions about a particular project, including safety issues and are able to provide proof that the job has been done correctly.  

Through clear, concise communications, air duct cleaning contractors can provide their clients with a better understanding of the work to be undertaken and demonstrate that the project will be well managed. Clients should also clearly define the scope of work they desire and are encouraged to utilize NADCA’s General Specifications for the Cleaning and Restoration of Commercial Heating, Ventilating and Air Conditioning Systems.

HVAC system cleaning projects require a game plan. Project length can vary from a few hours to six months or more. The size and scope of the project are the two key elements that will have an impact on the length of time necessary for completion. The entire duct cleaning project will run smoothest when an in-depth review is first conducted to determine the expectations and desired outcome for both the customer and duct cleaning company. 

  • During cleaning, the entire HVAC system is placed under continuous negative pressure — with a vacuum — to prevent the spread of contaminants.
  • Continuous negative pressure allows very fine particles to be removed from the system as they become airborne, ensuring that these particles are not released into the living space when the system is turned on after cleaning.
  • This negative pressure also serves to extract the loosened contaminants, which are collected and removed from your home.

Often, HVAC system components collect significant amounts of debris and particulate during construction activities within a building. NADCA recommends that newly installed HVAC systems or HVAC systems undergoing renovation be verified clean and protected before the system is permitted to operate.

Source: From NADCA’s “The Facility Manager’s Guide to Sick Buildings & Indoor Air Quality.”

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Contact us for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs: 1-800-931-6653 or email info@aspenenvironmentalservices.com.

Aspen Air Duct Cleaning is an approved Aeroseal Dealer.