Air Sealing

One of the more difficult aspects of keeping your home comfortable is dealing with issues that you can’t see: air leaks. If left unchecked, they can lead to seriously reduced comfort and increased energy usage.

When conditioned air – that is, air that has been heated or cooled – leaves your home, that’s called exfiltration. When unconditioned outdoor air sneaks into your home, that’s infiltration. Exfiltration typically takes place through the attic and roof, while infiltration tends to happen in basements and crawlspaces. Either sort of leak causes your heating and cooling systems to work harder than they need to, wasting power and putting more wear and tear on the system.

The solution, of course, is to find a way to seal the leaks that cause infiltration and exfiltration. That’s where we come in.

Assessing the Problem

Here in the Springfield area, there are quite a lot of older homes, and most of those houses have air leaks due to the outdated building methods that were used to construct them. That doesn’t mean you’re free from leakage problems if you live in a new house, however. Most builders don’t have the time or training to seal leaks as they go, as each different contractor looks at air sealing as “not my job.”

In order to figure out how leaky your house is, we’ll conduct a blower door test. Basically, we use a giant calibrated fan to depressurize the house, which makes leaks quite a lot more obvious as air rushes to fill in the suddenly vacated space. We can then use tools like smoke pencils and an infrared camera to see those leaks in progress. As experienced energy analysts, we know exactly where to look for leaks, so we can conduct the check efficiently.

Fixing the Problem

Our approach to stopping leaks depends, of course, on where those leaks are. We’ll look at obvious sources such as attic doors and access hatches, chimneys, cracks in drywall, gaps around windows and doorways and weatherstripping around exterior doors. There are less obvious ways for air to leak into or out of your home, such as recessed lights and even electrical outlets along exterior walls. Each type of leak calls for a different sealing process, and we have all the tools and techniques needed to get them filled.

Thanks to our five decades’ experience in the HVAC industry, we know exactly where to find air leaks in Western Massachusetts homes, and we’re adept at fixing them. Give us a call today to see where your home is leaking air.