Attention Commercial Building Owners and Facility Managers: About Ventilation for Commercial Buildings

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Chances are, your building’s ventilation system is broken.  According to the EPA and others, 80% of today’s buildings have ventilation shafts that leak an average of 15% or more. These leaks are the primary cause of ineffective building exhaust.

Like sucking air through a straw with holes in it, no matter how hard you try, getting the straw to work can be an impossible feat…until you seal those holes.

Symptoms of Poor Building Ventilation

Unfortunately, poor building ventilation can cost you plenty. Research has clearly linked faulty building ventilation to higher energy costs, added maintenance costs, chronic health issues, reduced worker productivity, increased absenteeism, lower student scores, and indoor comfort problems. Some common signs of poor ventilation include:

  • Persistent Mold & Mildew – Especially in Bathrooms
  • Chronic Odor Issues
  • Higher than Normal Energy Bills
  • High Rate of Worker Illness & Absenteeism
  • Noisy Exhaust Systems

An Easy Solution to Poor Building Ventilation

Most experts agree, the reason most U.S. buildings today are plagued with poor ventilation is because there simply wasn’t a practical solution. With most ventilation ductwork hidden behind walls or otherwise hard to access, finding and sealing the leaks responsible for the problem was just too expensive and too disruptive to even consider – so for decades, ventilation issues were simply ignored.

Aeroseal duct sealing technology changed that. Now, sealing the leaks that cause poor ventilation is a straightforward, cost-effective process. Since Aeroseal is applied from the inside of the ductwork, finding and sealing leaks is done with minimal if any disruption to existing structures. Projects can often be completed in as short as a single afternoon. A computerized report shows the actual before and after results.

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A Proven Strategy for Ventilation Issues

Aerosealing ventilation shafts solved chronic mold issues at the Capital Plaza Hotel in Frankfort, KY. It reduced energy costs for the Carlyle Towers High-Rise in Caldwell, NJ, and allowed Condell Hospital in Libertyville, IL to meet pharmacy exhaust regulations.

Source: Aeroseal

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

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 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. Or email info@aspenenvironmentalservices.com.

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Duct Sealing a Logical Add-On to Duct Cleaning, Officials Say

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At Aeroseal, we pride ourselves on the “1-2 punch” that cleaning and sealing ductwork offers homeowners and business owners.

You probably already know the benefits of cleaning air duct systems in homes and buildings. Unfortunately, cleaning a duct system alone is only “fixing the symptom” (e.g. the ducts are dirty). It does not prevent the ducts from getting dirty AGAIN.

Good news! Aeroseal makes it extremely easy to effectively clean ducts AND prevent them from getting dirty again, leading to improved air quality (less dust and airborne allergens) in homes and buildings.

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Furthermore, SNIPS magazine recently published “Duct Sealing a Logical Add-On to Duct Cleaning, Officials Say,” by Michael McConnell.

In the article, McConnell writes, “For a growing number of duct cleaning companies, a project isn’t finished until that newly scrubbed ductwork and its HVAC system have been sealed. Sealing ductwork involves applying products such as tapes, coatings and sprays to the ductwork’s exterior or interior to ensure homeowners and building owners get all the HVAC performance they expect.”

NADCA Executive Director Kristy Cohen adds, “[Duct Sealing] is a service that’s growing in popularity.”

She points out, “We’re seeing an increase in the number of our NADCA members who are in that duct-sealing space. It’s something that they are looking at as a natural progression.”

Source: Jonathan Tharp, for Duct News and Aeroseal

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

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 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. Or email info@aspenenvironmentalservices.com.

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You can read the original full SNIPS magazine article at: http://www.snipsmag.com/articles/92554-duct-sealing-a-logical-add-on-service-to-cleaning-officials-say

The Importance of Spring Duct Cleaning

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If you’re like everyone else in New England, you can’t wait for spring to arrive. While we all look forward to the warm, sunny days, most of us dread time-consuming seasonal tasks like spring cleaning. At Aeroseal Solutions, we look forward to spring because it’s one of the best times to perform duct cleanings that help home and business owners enjoy the many benefits of enhanced indoor air quality. If you’re planning a thorough home or business cleaning, consider having your ducts cleaned as well.

Duct Cleaning Recommendations

Spring is the perfect season for duct cleaning because there’s a small window between the height of the heating season and the beginning of the cooling season.

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Industry associations and government agencies like the EPA recommend duct cleanings in specific circumstances. You don’t need to have a problem with mold, pests or construction debris to benefit. Cleanings are recommended if you can see dust coming from your vents. A thorough cleaning will also address stale or unpleasant odors that are noticeable when the system in running.

Benefits of Duct Cleaning and Sealing
If you or anyone in your family has experienced itchy, watery eyes, coughing, choking or respiratory discomfort this winter, dirty ducts could be the culprits. Families with asthma or allergy sufferers can benefit the most from a thorough duct cleaning. Pet owners will also notice a dramatic improvement in indoor air quality.

Aeroseal at work(1)

Before we begin the cleaning, our experts will assess your entire HVAC system. We pay extra attention to the supply and return ducts. The return is especially vulnerable because debris is pulled into the system where it coats fans and air handling components. On the other side, debris from the ducts is ejected into your living space, which can trigger allergy symptoms and fuel your discomfort.

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Duct sealing is another thing to consider. This process can increase efficiency significantly while sealing cracks and gaps that allow pollutants to enter and contaminate your ductwork. Experts estimate that 20 percent of conditioned air escapes through cracks and loose fittings. If that much air can get out, you can imagine how much dirt and dust can enter.

Ways to Improve Indoor Air Quality
In addition to having your ducts cleaned and sealed, you can improve your air quality by adopting these smart habits.

  • Dust and vacuum regularly
  • Replace return filters monthly
  • Minimize the use of chemical cleansers
  • Have your HVAC system serviced annually
  • Hire a professional to inspect your ducts
  • Increase ventilation

Source: Aeroseal

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

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 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. Or email info@aspenenvironmentalservices.com.

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The Blizzard And Blocked Gas-Furnace Vents

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In light of the severe snowstorm recently experienced in the Northeast, Aspen Air Duct Cleaning Services would like to provide this helpful article from our fellow professionals in Connecticut as a service to our customers, colleagues, and the general public.

Gas furnaces, carbon monoxide and rotten eggs: Homes heated by natural gas vent a byproduct, carbon monoxide, to the outside of the house. A sidewall vent blocked by drifting snow, trapping carbon monoxide in the home, could be deadly.

Connecticut Natural Gas and Southern Connecticut Gas responded to about 250 reports of gas leaks caused by clogged sidewall vents or buried meter and regulator sets during a weekend blizzard, says spokesman Michael West.
Carbon monoxide, like natural gas, is odorless. Gas companies add mercaptan to their product, creating the signature rotten-egg smell. Carbon monoxide produced by burning that fuel will not smell like rotten eggs, but it’s not odorless, either.

“The clogged sidewall vents cause incomplete combustion,” says West, “and do create odors in the basement. Your equipment might start malfunctioning and people think they might smell something and that something’s odd. We get calls of concern and it’s really not a gas leak. It’s just your vents trying to vent. That backup will create a smell.”

Don’t let it get that far. Clear the vent and the meter area, says West, with something other than a shovel or snow blower, which can cause damage. Use a broom, he says. And don’t wait.
“Some people are still waiting for their street to be plowed,” he says. “What we’re saying is if you have gas heating in your home you just need to do this. There’s no need to wait. There’s no need to think about timing. There’s no need to try to figure that out. You just want to clear a path so you can vent properly.”

The weekend blizzard, and drifting, was fiercest at night. That’s when a working carbon monoxide detector, which every home heated by natural gas should have, becomes a potential lifesaving monitor.

If you smell an unusual odor, report it to your gas company.

Source: Kevin Hunt for the Hartford Courant

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

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 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. Or email info@aspenenvironmentalservices.com.

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Many Boston public schools are said to have bad air. Report calls poor ventilation, leaking roofs red flags.

According to The Boston Globe, a city report says that more than half of Boston’s schools are plagued by poor or deficient air quality, which studies have linked to low student achievement and high rates of asthma.

The findings, released Wednesday, are based on an examination of schools’ ventilation systems or the lack of them, and other factors that can affect air quality, including the inability to open windows.

Boston Mayor Martin Walsh is quoted as saying, “The city’s schools have a ‘history of neglect.’”

This is not an uncommon problem in city-owned buildings, which are often neglected due to lack of taxpayer funds. But this neglect could result in costs that are far more than just repair—like student/teacher illnesses and absenteeism.

Source: Jessica Rinaldi for The Boston Globe

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A new technology called Aeroseal can solve problems like this and save school districts both time and money. Aeroseal s a product that seals small leaks in the ductwork. No attic work is required by the crew to work the equipment. It is monitored by a computer program that tells when the pressure of the ductwork is low enough that most of the leakage has been sealed.

Read the case study below to see how Aeroseal rescued the renovation of a school in this one example of many Aeroseal success stories.

WHEN NEW DUCTWORK WASN’T IN THE BUDGET OR TIME SCHEDULE AEROSEAL RESCUES ARIZONA MIDDLE SCHOOL RENOVATION

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During the floor-to-ceiling renovation of the Gallego Intermediate School, contractors removed the existing ceiling tiles to find ductwork that was in such bad shape, replacing the entire duct system seemed to be the only option. The building’s HVAC included 34 individual units, each with its own supply and return ducts, all made of duct board that was literally falling apart at the seams. Some of the ducts were in such disrepair that they made leakage testing impossible.

Unfortunately, the Tucson, Arizona-area school district couldn’t afford either the additional expense or time necessary to replace the existing duct system. Beyond the estimated $200,000 dollars it would have cost for the work, the school was set to open in three months and replacing the ductwork would have taken twice that time.

Faced with this project-halting dilemma, a consulting engineer on the project suggested they look at Aeroseal, a new duct sealing technology he had seen demoed at a recent industry seminar. The Aeroseal experts at GreenSeal were called in to share information about the new technology and in just a matter of days, they began the work.

Given the poor condition of much of the existing ductwork, the GreenSeal crew began reconnecting and repairing the most dilapidated portions using tape and mastic. Even after this work, testing showed a total system leakage rate of about 49,000 CFM. Then the Aerosealing began.

Aeroseal at work

It took GreenSeal less than two weeks to Aeroseal all 34 duct systems – both supply and return. The final results showed total leakage down to 8,000 CFM – an 85% reduction and well below the 5% leakage rate they were targeting. The total cost for Aerosealing was a fraction of the estimate for duct replacement and best of all, the school opened on time.

I think a lot of schools in the district could benefit from this technology. The Aeroseal team was able to work in coordination with all the other contractors on the job, ensuring that we maintained our extremely tight schedule. They also assisted us in securing a rebate from the local utility company that helped us stay within budget. In the end, this was an ideal solution to a potentially derailing problem. I look forward to assessing energy savings over the next year or two. In the meantime, we have heard nothing but positive feedback regarding the comfort of those using the new school building.”

Tom Hubbard, Bond Project Manager, Sunnyside School District

When contractors removed the ceiling tiles, they saw that the existing ductwork was in really bad shape. They wanted to replace all of the ductwork but it was simply out of the budget – and that’s when one of our engineering consultants suggested we look into using Aeroseal as an alternative. It proved to be much less expensive than replacing the ductwork and it took only a matter of days to complete the job so the school was able to open as scheduled.”

Cindy Bova, Energy Project Manager, Sunnyside School District

Aeroseal—The Technology:

Developed at Lawrence Berkeley National Laboratory in 1994.

Research for Aeroseal technology was partially funded by the U.S. Department of Energy.

Aeroseal is the only duct sealant technology that is applied from the inside of the duct system. It is delivered as a non-toxic aerosol mist that seeks out and plugs leaks.

Aeroseal has proven to be 95% effective at sealing air duct leaks.

Source: Aeroseal

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

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 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. Or email info@aspenenvironmentalservices.com.

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The Importance of Duct Cleaning Before Spring (Finally) Arrives

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If you’re like everyone else, you can’t wait for spring to arrive. While we all look forward to the warm, sunny days, most of us dread time-consuming seasonal tasks like spring cleaning. At Aeroseal Solutions, we look forward to spring because it’s one of the best times to perform duct cleanings that help home and business owners enjoy the many benefits of enhanced indoor air quality. If you’re planning a thorough home cleaning, consider having your ducts cleaned as well.

Duct Cleaning Recommendations
Spring is the perfect season for duct cleaning because there’s a small window between the height of the heating season and the beginning of the cooling season.

Industry associations and government agencies like the EPA recommend duct cleanings in specific circumstances. You don’t need to have a problem with mold, pests or construction debris to benefit. Cleanings are recommended if you can see dust coming from your vents. A thorough cleaning will also address stale or unpleasant odors that are noticeable when the system in running.

Benefits of Duct Cleaning and Sealing
If you or anyone in your family has experienced itchy, watery eyes, coughing, choking or respiratory discomfort this winter, dirty ducts could be the culprits. Families with asthma or allergy sufferers can benefit the most from a thorough duct cleaning. Pet owners will also notice a dramatic improvement in indoor air quality.

Before we begin the cleaning, our experts will assess your entire HVAC system. We pay extra attention to the supply and return ducts. The return is especially vulnerable because debris is pulled into the system where it coats fans and air handling components. On the other side, debris from the ducts is ejected into your living space, which can trigger allergy symptoms and fuel your discomfort.

Duct sealing is another thing to consider. This process can increase efficiency significantly while sealing cracks and gaps that allow pollutants to enter and contaminate your ductwork. Experts estimate that 20 percent of conditioned air escapes through cracks and loose fittings. If that much air can get out, you can imagine how much dirt and dust can enter.

Ways to Improve Indoor Air Quality
In addition to having your ducts cleaned and sealed, you can improve your air quality by adopting these smart habits.

• Dust and vacuum regularly
• Replace return filters monthly
• Minimize the use of chemical cleansers
• Have your HVAC system serviced annually
• Hire a professional to inspect your ducts
• Increase ventilation

Source: Aeroseal

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

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

Aeroseal is a product that seals small leaks in the ductwork. No attic work is required by the crew to work the equipment. It is monitored by a computer program that tells when the pressure of the ductwork is low enough that most of the leakage has been sealed.

Aeroseal saves energy and money! Look at all the awards we’ve won for energy efficiency.

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We’ve been honored to receive the following awards:

2016 AHR Product of the Year Award – AHR Expo
Aeroseal LLC was announced as this year’s winner for its duct sealing system. Aeroseal is a computerized duct-sealing system that seals air ducts and ventilation shafts from the inside. This unique inside-out approach makes it possible to quickly and easily seal the entire duct system — even sections that are hidden behind walls, under insulation, through tight spaces, or other inaccessible locations.

2016 AHR Innovaton Awards Gold Medal – AHR Expo
Aeroseal duct sealing technology won top honors in the “ventilation” category of the 2016 AHR Expo Innovation Awards competition. The technology was singled out as the gold medal winner by a panel of industry experts who evaluated entries based upon their application, innovation, value and market impact. The Innovation Awards competition is jointly sponsored by the AHR Expo, ASHRAE and AHRI. 

2015 Innovation Awards Gold Medal – Interclima+Elec Trade Fair
Aeroseal’s European headquarters accepted a Gold Medal award for innovation in the Génie climatique (climatic engineering) category at the 2015 Le Mondial du Bâtiment (Building World Championships) in Paris – an annual tradeshow showcasing innovations in the construction industry. Aeroseal duct sealing technology was chosen among more than two hundred products and technologies submitted on behalf of exhibiting companies. “The Interclima+Elec Gold medal award highlights the growing success of aeroseal technology in Europe and around the globe,” said JÖrg Mez, manager of Aeroseal LLC’s European distributor, Mez-Aeroseal, Reutlingen, Germany. 

2015 Manufacturing Innovation Award – Dayton Business Journal
Aeroseal garnered the silver medal in the “innovation” category in this year’s Manufacturing Awards presented by the Dayton Business Journal. Aeroseal received the award for its duct sealing technology in recognition of its transformative effect on how home and building owners think about energy savings, indoor air quality and indoor comfort. 

2014 Dealer Design Silver Medal Award – ACHR News
Aeroseal was recognized for excellence in product design in the 11th annual Dealer Design Awards Program sponsored by The Air Conditioning Heating & Refrigeration News magazine. An independent panel of contractors acted as judges in the contest that had 92 entries. The company’s HomeSeal Duct Sealing System was the Silver Award Winner in the HVAC High Efficiency Residential Equipment Category. The ACHR News is the leading trade magazine in the heating, ventilating, air conditioning, and refrigeration industries.

2013 Product Showcase Award – HVAC Tools – Comfortech Expo
HomeSeal residential duct sealing system was voted #1 in the 2013 Product Showcase awards, at the Comfortech Expo. The new HomeSeal system is a more portable unit and offers a faster, easier and more affordable way for HVAC contractors, energy efficiency experts and others to effectively seal duct leaks. HomeSeal was judged by a panel of HVAC experts to be the most innovative and useful new product for contractors who are seeking HVAC solutions. The new Aeroseal system won best-of-show in the category of Tools. 

2012 EBie Award – Green Building Council
New York-based building consultants Steven Winter Associates (SWA) received a 2012 EBie AwardTM for a building renovation project that combined Aeroseal duct sealing technology together with self balancing Constant Airflow Regulators from American Aldes to dramatically reduce energy usage. The award, honored SWA and the building owner, Legow Management for their innovative approach to an environmental improvement upgrade made to an existing building. This approach is now being used to increase energy effiency in hundreds of legacy buildings throughout the country.

2011 Best New Product Award – This Old House magazine
The building technology editors at This Old House magazine told us they’ve been keeping an eye on Aeroseal technology ever since it emerged from the research labs at Lawrence Berkeley National Laboratory. Now that the duct sealing solution is available for the first time to more U.S. home owners than ever before, they felt it was time to help spread the word about this “home energy conservation game changer.” Aeroseal won top honors in the Home Technology category for the This Old House 2011 Best New Home Product Awards. 

Best of What’s New” Award – Popular Science magazine
The Aeroseal process won the “Best of What’s New” award from Popular Science magazine. Aeroseal diagnostic air duct system sealing process is the most effective, affordable, and viable method of sealing the central heating and cooling ductwork in your home.

Energy 100” Award – U.S. Department of Energy (DOE)
The Aeroseal process won the “Energy 100” award from the U.S. Department of Energy (DOE). The DOE also rated the Aeroseal duct sealing process as one of the 23 most beneficial technologies available to American consumers that has come out since the agency was created.

Source: Aeroseal

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

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

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University Hospital Uses Aeroseal for Safe, Unobtrusive Sealing

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UOHI turned to new duct sealing technology to solve one problem and wound up solving two. Hospital monitors detected that an isotope created in one of the institute’s laboratories had somehow migrated to an adjacent wing of the building. By using Aeroseal technology to seal possible leaks in one of the ventilation shafts, the hospital could ensure that the isotope wasn’t spreading from one shaft to the other. Once the shaft was Aerosealed, the hospital immediately noticed another significant benefit – dramatically improved ventilation efficiency and lower energy costs.

The Problem
There was only one way to ensure the migrating isotope wasn’t being spread through leaks in the ventilation system – and that was to seal those leaks. Using traditional duct sealing methods would have been extremely disruptive and expensive. Entire wings would have had to been shut down as workers tore down walls to access the ductwork.


The Solution
Fortunately, the hospital’s duct specialists, AWS Remediation Technologies, had heard about Aeroseal, a breakthrough technology that works from inside the duct system. With Aeroseal, the actual sealing process took less than a day. Regular hospital operations continued uninterrupted.

Source: Jonathan Sharp for Aeroseal

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

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

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Duct Leakage Testing Is a Must

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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.

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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.

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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 article by authors H. Jay Enck, Member ASHRAE, HBDP, BEAP, CPMP, CxAP, LEED Fellow, cofounder and chief technical officer and David Cantrill, P.E., Member ASHRAE, BEAP, CCP, branch manager, commissioning authority and project manager with Commissioning and Green Building Solutions, Inc. (CxGBS).

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

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

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Happy New Year from Aspen Air Duct Cleaning!

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Start 2017 on the right foot with this list of considerations. By having clean air ducts, you can improve air quality in your home or commercial building and help to avoid illness and allergies.

Is there is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system?

Many sections of your heating and cooling system may not be accessible for a visible inspection, so ask a professional to show you any mold that exists. You should be aware that although a substance may look like mold, a positive determination of whether it is mold or not can be made only by an expert and may require laboratory analysis for final confirmation.

Have your insulated air ducts and the insulation gotten wet or moldy? This cannot be effectively cleaned and should be removed and replaced.

If the conditions causing the mold growth in the first place are not corrected, mold growth will recur.

Are your ducts infested with vermin, e.g. (rodents or insects)?

Are your ducts clogged with excessive amounts of dust and debris and/or particles? These are actually released into the home from your supply registers.

Source: EPA

If you find any of the above issues, please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce your energy bills. Or email info@aspenenvironmentalservices.com.

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

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