An AC compressor plays one of the most important roles in your HVAC system-compressing refrigerant into a gaseous vapor that allows the heat it absorbs to be released outside. You shouldn't hear much from the compressor. However, banging, clanking, humming, buzzing, or hissing can signal a very significant problem. If there's an AC compressor whining [...]The post What Causes an AC Compressor to Make a Whining Noise When Accelerating? appeared first on Hays Cooling Heating and Plumbing.