Is Cold Air Return Necessary?

Is Cold Air Return Necessary? Cold air return vents aren’t the most elegant feature in your home, but they exist for reason. These vents, commonly found in hallways or on ceilings, are absolutely essential to an air conditioner’s well-being. Cold air returns take in warm air from your home’s indoor spaces for use in your

Who Manufactures Armstrong Furnaces?

Who Manufactures Armstrong Furnaces? Armstrong Air makes residential and light commercial heating and cooling products, including central air conditioners, furnaces and heat pumps. Armstrong Air is owned by Lennox International, a Texas-based company with revenue of approximately $3.84 billion in 2017. Is Armstrong Air still in business? In 1928, Lennox Furnace Company—one of America’s leading

Why Does My AC Switch To Defrost When I Accelerate?

Why Does My AC Switch To Defrost When I Accelerate? The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.