According to Energy Star, leaky ducts reduce heating and cooling efficiency by 20% in a typical home. That’s a huge waste of your hard-earned money, but it doesn’t have to be that way.
In our experience, ductwork leaks are a result of poorly connected and poorly installed duct systems. Here’s a list of ways to seal your ductwork and stop overpaying to heat and cool your home:
- Pull down all of your air registers (also known as air “grills” or vent covers) and caulk with silicone between your duct boot and the surrounding sheetrock.
- If you’ve got flexible ductwork, pull back the outer insulation layer and apply mastic to the collar of the duct boot.
- After you’ve done that, take the interior vinyl section of the duct and reconnect it to the boot collar.
- Use a duct tie to strap the vinyl around the boot collar, ensuring an airtight seal.
- Pull the insulation layer back over the vinyl and use mastic to secure the insulation to the boot.
- Make sure your boot is properly insulated.
- Pull the insulation layer back where the duct connects to the indoor unit and repeat steps 2-3.
- For hard pipe ducts, pull back the insulation and seal all connections and elbows with mastic. Then re-insulate.
Sealing your ductwork keeps the air you pay to heat and cool inside your home. After all, that’s where it belongs.