The Crawl Space Combustion Air Paradox: Preventing HVAC Backdrafts
Sealing your foundation vents and laying down a heavy-duty vapor barrier is the absolute best way to control relative humidity. However, if your under-house footprint contains a gas-fired furnace, a propane water heater, or an older atmospheric boiler, complete encapsulation introduces a dangerous physical complication known as the combustion air paradox. Gas-burning appliances are atmospheric … Read more