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Air Sealing

Most homes lose between 40% and 60% of their conditioned air due to leakage every hour.  This level of leakage can account for 40% of your heating and cooling costs. Additionally, air leaks make a home feel drafty.

 What is it?

Air leakage can be reduced using a variety of tools such as expanding foam, caulking, airtight can light kits, weatherstripping .  Most homes leakage can be reduced between 15% and 50% using these methods.

The Stack Effect

The stack effect occurs in all homes. Simply stated, hot air rises, and escapes through the attic. As this air escapes, your home pulls in more cold air through the foundation and lower extremities in order to maintain the balance of pressure pre-existing in your home.

Many drafts that you feel are the direct result of the stack effect. Good air-sealing and a continuous air barrier between the attic and the home’s conditioned (living) space are important, not only to save energy and reduce fuel bills, but also to prevent moisture problems in the attic.

Sealing the foundation will further slow the stack effect. Sealing the sides (such as doors, windows, walls, outlets, etc.) will reduce more localized drafts.

Air Sealing

NACH Rating

  • 1.0 & Higher- Sever air leakage
  • .75 to .99- Extremely leaky
  • .50 to .74- Very leaky
  • .35 to .49 Fairly leaky
  • .20 to .34 Fairly airtight (goal for most homes)
  • .10 to .19 Very airtight (Mechanical ventilation needed)
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We had a great experience from start to finish. When I called they suggested a full energy audit which was an awesome suggestion. We found some additional things that could help our home and got some great information as well. Everyone was friendly and helpful throughout.

Alecia R., Littleton, Colorado April 6, 2018

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Energy Geeks did an amazing job and everyone was great to work with. I was on a very specific time frame to get my new home insulated, and Nick and Steve were awesome! They were very understanding and went above and beyond to work with me even though I had to change the date on them more than once due to new home construction issues. That is what I call wonderful customer service! They came out to the house to give me a quote within just a few days of my initial contact with them, and the quote they gave me was very reasonable. I highly recommend their services!

Ronda G., Aurora April 23, 2019