HVAC Innovations: Duct Sealing From the Inside

With winter fast approaching, it’s time to think about saving energy and money for your home or business—leaky ducts can amass a huge cost. A new technology called Aeroseal is the solution that seals ducts from the inside—a fast, low-cost way to make your home or business energy-efficient and start saving money immediately.

HVAC Innovations: Duct Sealing From the Inside

According to EPA, the US Department of Energy (DOE), ASHRAE, and various industry reports, having leaky air ducts is one of the leading causes of energy waste in US buildings, says Neal Walsh, Aeroseal’s senior vice president of strategy and commercial sales.

In an example of HVAC Innovations, a 23-story high-rise apartment building in New Jersey derived $34,000 in annual energy savings after property managers utilized the duct-sealing Aeroseal technology in exhaust shafts and replaced dampers. The facility also is saving several thousands of dollars more each year through increased heating efficiencies.

On average, US building duct systems lose 30% of heated or cooled air through these leaks. Leaks not only prevent treated air from reaching its intended destination but, when related to ventilation systems, they substantially increase energy usage when fans are turned up to compensate for inefficient building exhaust.

Dr. Mark Modera, a former US DOE researcher and developer of Aeroseal technology, says 80% of US buildings have ducts that leak 20–40% or more, resulting in building code violations, indoor air quality health risks, and wasted energy.

Aeroseal, developed at Lawrence Berkeley National Laboratory in concert with the US DOE, EPA, and local utility companies’ sponsorship, is “a computerized process of applying an aerosol mist of sealant to the inside of the ducts where it locates and seals all the leaks,” says Walsh.

The product is designed to meet tight standards for duct leakage in new building construction and repair leaks in ducts and ventilation shafts of existing buildings, he adds.

Aeroseal is designed to be 95% effective, with studies finding it to be as much as 60% more effective than manual sealing, and labor and repair costs reduced by 30%, says Walsh.

Aeroseal equipment is typically attached to ductwork via a long flexible tube that extends from the equipment to the ducts. “In buildings, the duct connection is usually made at points found on the rooftop—as with ventilation shafts—or via a temporary hole made in the side of the duct itself,” says Walsh.

During the setup process, all of the vents serviced by the ductwork are temporarily closed so that any air being pushed into the ducts can only escape through leaks. The Aeroseal service technician uses computerized equipment to measure the exact amount of leakage before the sealing process begins.

When ready, the equipment is then used to send an aerosol mist of microscopic sealing particles into the interior of the ductwork. The computer monitor provides details of the leakage rate as holes are being filled. At the end of each sealing event, users can generate a computerized report providing accurate account of the pre- and post-seal leakage rate, says Walsh. 

Source: Aeroseal and Forester Daily News; first appeared in Business Energy.

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.

Holiday Safety Tips

Because we at Aspen Air Duct Cleaning care about our customers, we’d like to say Happy Thanksgiving and share this list of holiday safety tips provided by the National Safety Council.

Holiday Safety Tips

Decorating Safety ™

 Never use lighted candles near trees, boughs, curtains/drapes, or with any potentially flammable item. 

 Wear gloves while decorating with spun glass “angel hair.” It can irritate your eyes and skin. A common substitute is non-flammable cotton. 

 When spraying artificial snow on windows or other surfaces, be sure to follow directions carefully. These sprays can irritate your lungs if you inhale them. 

Small children may think that holiday plants look good enough to eat, but many plants may be poisonous or can cause severe stomach problems. Plants to watch out for include: mistletoe, holly berries, Jerusalem cherry and amaryllis. Keep all of these plants out of children’s reach. 

 When displaying a tree, cut off about two inches off the trunk and put the tree in a sturdy, water-holding stand. Keep the stand filled with water so the tree does not dry out quickly. 

 Stand your tree away from fireplaces, radiators and other heat sources. Make sure the tree does not block foot traffic or doorways. 

 Avoid placing breakable tree ornaments or ones with small, detachable parts on lower branches where small children or pets can reach them. 

 If you use an artificial tree, choose one that is tested and labeled as fire resistant. Artificial trees with built-in electrical systems should have the Underwriters Laboratory (UL) label. 

 Only use indoor lights indoors (and outdoor lights only outdoors). Look for the UL label. Check lights for broken or cracked sockets, frayed or bare wires, and loose connections. Replace or repair any damaged light sets. 

 Use no more than three light sets on any one extension cord. Extension cords should be placed against the wall to avoid tripping hazards, but do not run cords under rugs, around furniture legs or across doorways. 

 Turn off all lights on trees and decorations when you go to bed or leave the house. Unplug extension cords when not in use. 

 If using a natural tree, make sure it is well watered to avoid dry branches from catching fire from the heat of light bulbs.  When displaying outdoor lights, fasten them firmly to a secure support with insulated staples or hooks to avoid wind damage. Never nail, tack or stress wiring when hanging lights and keep plugs off the ground away from puddles and snow.

Ladder Safety ™

 When putting up holiday decorations, always use the proper step stool or ladder to reach high places. Don’t stand on chairs, desks or other furniture. 

 If you have to use a step ladder near a doorway, lock or barricade the door and post signs so no one will open it and knock you off the ladder. 

 A straight or extension ladder should be placed one foot away from the surface it rests against for every four feet of ladder height. 

 When you climb, always face the ladder and grip the rungs to climb – not the side rails. Always keep three points of contact on the ladder whether two hands and one foot, or two feet and one hand. 

 When climbing, keep your hips between the side rails and do not lean too far or overreach. Reposition the ladder closer to the work instead. 

 Use ladders with slip-resistant feet and wear clean, dry and slip-resistant shoes when climbing a ladder. 

 When using ladders outdoors, get down immediately if high winds, rain, snow or other inclement weather begins. Winds can blow you off the ladder and rain or snow can make both the rungs and the ground slippery.

Hosting and Food Safety ™

 When preparing a holiday meal for friends and family be sure to wash hands, utensils, sink, and anything else that has come in contact with raw poultry. Keep in mind that a stuffed bird takes longer to cook. 

 Never defrost food at room temperature. Thaw it in the refrigerator, in cold water or in the microwave. 

 While doing holiday cooking, keep your knives sharp. Most knife injuries occur due to dull blades. 

 Use a clean food thermometer to cook foods to a safe internal temperature before serving. 

 Avoid cleaning kitchen surfaces with wet dishcloths or sponges. They easily harbor bacteria and promote bacteria growth. Use clean paper towels instead.  When reheating leftovers, bring the temperature up to at least 165°F to eliminate any bacterial growth. 

 Refrigerate or freeze leftovers in covered shallow containers (less than two inches deep) within two hours after cooking. Date the leftovers for future use. • Being a smart party host or guest should include being sensible about alcoholic drinks. More than half of all traffic fatalities are alcohol-related. Use designated drivers, people who do not drink, to drive other guests home after a holiday party. 

 The holiday season is one of the most stressful times of the year. You can’t avoid stress completely, but you can give yourself some relief. Allow enough time to shop for gifts and meal items rather than hurry through stores and parking lots. Only plan to do a reasonable number of errands.

Winter Vehicle Preparation ™

 Prepare your car for the winter by checking items such as the brakes, spark plugs, battery, and tires. Check your owner’s manual for the recommended interval for a tune-up. ™

 Be prepared for emergency situations on the road by having a winter “survival kit” in the vehicle including items such as, a working flashlight, extra batteries, reflective triangles, compass, first aid kit, exterior windshield cleaner, ice scraper, snow brush, wooden stick matches in a waterproof container, and non-perishable, high energy foods like unsalted canned nuts, dried fruits, and hard candy.

Source: The National Safety Council

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.




Attention: Builders and Contractors Announcing a Brand New Envelope Sealing Technology!

• MEET the most aggressive air leakage standards
• MEET passive house air tightness standards
• ACHIEVE air tightness requirements in less time and without costly delays
• ELIMINATE noise and odor complaints by simultaneously sealing exterior and interior walls
MEET MORE STRINGENT IECC CODE REQUIREMENTS that are forcing builders to change the way they build their homes—comply with ASTM E2357, ASTM E2178, and NFPA 285.

What Is Aerobarrier?
Building upon proven technology invented by the U.S. Department of Energy (DOE) over 20 years ago, AeroBarrier is a cutting edge aerosol envelope sealing system that simultaneously measures and seals building
envelope air leaks.

See How It Works:

                                     It’s Envelope Sealing Made Easy!

Aerobarrier is a cutting-edge technology that takes the guesswork out of sealing the building envelope. Our goal was to provide a more cost-effective way to meet the most aggressive air tightness standards compared to standard, manual sealing methods

“The AeroBarrier process has the potential to be more effective and convenient than conventional sealing methods because it requires less time and effort, and it can seal a larger portion of a leakage area more quickly.”

AeroBarrier simultaneously measures and seals the building envelope with guaranteed results. Whether you need to meet the latest IECC code or passive house requirements, from new construction to gut renovations in single and multi-family spaces, the technology works.

• MEET any air leakage requirement without changing the way the house is built.
• SEAL an entire house in half a day to whatever tightness is required?
• USE the same process for both multi and single-family construction.
• PROVIDE more energy efficient homes to all your customers.

About Aspen:
Aspen professionals are licensed and insured and members of the National Organization of Remediators and Mold Inspectors (NORMI), the National Air Duct Cleaners Association (NADCA), and the Institute of Inspection Cleaning and Restoration Certification (IICRC), and we are an approved Aerosea/Aerobarrier Dealer.

Please contact Aspen Environmental Services for professional mold testing and removal, and water damage restoration at (978) 681-5023.

Please contact Aspen Air Duct Cleaning at 1-800-931-6653 for an Air Duct System Inspection, and to learn more about Aeroseal air duct sealing and Aerobarrier envelope sealing technology.