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What to Know About a Furnace
Furnaces provide warmth in winter and are installed in most homes nationwide. Due to their complex nature, these units can be subject to many odd symptoms, such as burning smells and humming noises.
Identifying the Sounds From an Air Conditioner
Most modern air conditioners barely make a sound when in operation. Homeowners usually ignore these sounds when they first appear, but soon they realize something is wrong with their HVAC system.