Sources of air leakage are an artifact of normal home construction. Thousands of pieces from big to small are joined together in assembly, and where they meet likely has some clearance space around the joint. By the time the house is complete, there are leakage points all over the place.
As much as 20% of the energy is lost in process due to leaks in the ducts, causing HVAC systems to work harder to generate the desired heating or cooling. By insulating ducts, not only will energy bills be reduced, but conditioned air will be more effectively distributed throughout the house.
Air leaks can be responsible for wasting significant energy, so by sealing them up you’ll be looking at significant savings. Get ready to enjoy lower energy bills.
Air leaks are the source of drafts in a home. So sealing up those cracks and holes will make rooms cozy again to be in.
When the home is sealed up and airtight, the home is less vulnerable to air born pathogens, humidity, dust, pests, and other unwelcomed outsiders.
Moisture can pose serious harm by leading to mold, ruining insulation, and potentially compromising the structural integrity of the home. With an air sealed home the threat of moisture will be reduced.
Sitting on the foundation is the house’s frame with its numerous joists bolted together. But where they meet arises small cracks that over time expand in size with the warping of wood. Then there are the gaps that result from holes drilled to accommodate lines for water, electrical, plumbing, and fuel along with dryer and stove vents. Together these vulnerabilities fill the basements with enough holes to suck in external air, leaking energy to the outside.
Sealing the attic is an important first course of action against air leakage. This is because rising heat forms a convection current that draws air into the attack and then out into whatever holes exist. As this vertical transport of air move up, it draws air from below, creating a negative pressure that sucks in outside air through leaks. So by sealing the attic, the heated air is not allowed to escape, which then stops the upward airflow from transferring energy out of the house.