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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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After heat pump is installed why does it make noise when

Customer Question

after heat pump is installed why does it make noise when weather is 32 or below degrees
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: brand new heat pump, filter is fine thermostat setting is ok
JA: Do you plan on doing the work yourself?
Customer: no work has been done, but i'm told it makes noise because the weather is below 32 degrees, I live in Maryland. but that does not make sense to me. I was told to put thermostat on emergency, when you do that there is no noise. but a high price for your next electric bill.
JA: Anything else we should know to help you best?
Customer: my mistake, work has been done. heat pump installed.
Submitted: 8 months ago.
Category: HVAC
Expert:  WCohn replied 8 months ago.

Hello, my name is ***** ***** I look forward to helping you!

Expert:  WCohn replied 8 months ago.

They way a heat pump work is it draws heat out of the air. If it's too cold outside it can't do that so it has to run on EMheat which uses the heat strip of the indoor unit. Once temps rise you can go back to normal. What kind of noise? Might be fan hitting ice inside shroud

Customer: replied 8 months ago.
it makes a weird loud sounding noise that disturbs the neighbors. strange noise like something is lose. but I am told its because my emheat does not automatically switch on when its cold.
Expert:  WCohn replied 8 months ago.

You have an outdoor unit correct?