+LA+Air+Conditioning+Contractors,+Victory+Boulevard,+Canoga+Park,+CA,+USA&mode=driving" width='100%' height='600'> comfort heating and airOne of the most common reason for a heat pump hissing sounds is often a refrigerant leak. Since the refrigerant escapes by way of a smaller opening produced because of the leak, it transitions from the higher-tension liquid to the reduced-pressure f... https://fast-air-conditioner-heat19483.canariblogs.com/5-easy-facts-about-common-hvac-noises-and-their-causes-described-42727805