Leaks are caused by a variety of factors including the age of the dwelling, type of construction, type of duct-work and local building codes. Think of it this way … the mastic and code approved tape products used to seal ducts (duct tape as you may know it should NOT be used to seal ducts! – see this article for more info … ) break down long before the useful life of the duct system. In a comparative accelerated life test, Aeroseal lasted the full two years of extreme temperature cycling – without any degradation in material or performance – while the longest any of the other materials tested lasted was 4 months before catastrophic failure – and some failed as soon as 7 days! These failures occurred in a test environment where application was meticulous and conditions were ideal. The other noteworthy condition was that the materials used were all “fresh out of the box” – and all of the joints were easily accessible. These conditions typically do not exist when a duct system is being sealed using mastic or tape – but simply don’t cause any problem when Aeroseal is being applied. Bottom line is if your home is new construction or over 10 years old, Aeroseal can dramatically tighten up you duct system and save you money.

Repairing and patching leaks in HVAC duct systems saves cooling, heating, and fan energy. In air-based systems, ducts deliver all of the heating and cooling to conditioned spaces. Any duct leakage translates into extra air that must be supplied so sufficient heating or cooling reaches the conditioned space. This not only increases effective heating and cooling loads, it also increases fan energy due to increased flow and/or run time. Sealing duct leaks reduces the amount of heated or cooled air the supply fan must handle to deliver the same amount of air to the conditioned space.

Air Quality Problems?
Excessive Dust?
Air contamination or odor issues?

Duct leakage may be causing your indoor air quality problems.

A good transmission gets power to all the wheels of a car. Just like a good air duct system gets air to all the rooms of your home or building.

In Residential buildings, the problem with leaky duct-work is that air can not only leak out of you HVAC system and air ducts — untreated and unclean air and
contaminants from the crawlspaces, attic and other place can actually be pulled in to the air you and your family breath. Since so many air duct systems leak and pull bad air in (we find 20 to 40% leakage in 3 out of 4 homes we visit), poor air quality is a problem that many homes have.

In commercial buildings, the problem with leaky ducts in return ducts and ventilation shafts creates air contamination and results in odor issues and unhealthy indoor environment.