Question: I live in a 1st floor apartment. Any idea what this could be? Should I be concerned? Once the heat shuts off this draining sound quits. (The out side connections to the pump/inside unit run over head in my laundry room) So far there's been no other issues. Question: Just this morning I noticed when my heat unit/pump was running it sound as if water was draining through pipes. Sounds like freon running back to or from compressor, Only in heat cycle. Reader Question: I have a 4 ton heat pump that hisses when it shuts down in 40* weather. Running Water Sounds in Refrigerant Piping, Compressor, Air Handler may sound like flowing water or gurgling Refrigerant floodback noises - running water or gurgling sounds in the refrigeration piping We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. To rattling loose bolts and hardware, to costly compressor damage indicatingĪir conditioning compressor or A/C compressors at or near end of their life. What causes running water sounds or burbling or gurgling noises heard in the refrigerant piping or tubing in an air conditioning or heat pump system? Gurgling noises in HVAC or refrigeration equipment is often traced to an improper refrigerant charge, refrigerant gases in the liquid refrigerant line.Īir conditioner or heat pump noise diagnosis & cure: this air conditioning repair article series discusses theĭiagnosis and repair of air conditioning compressor noises which range in importance from normal (if annoying squeaks and squeals, How to diagnose running water sounds in refrigerant piping at the air conditioner, heat pump, or refrigerator:

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