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Heat pumps have a reversing valve in the outside unit. You are hearing a balance of refrigerant pressures when the reversing is energized or de-energized.

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Q: Central air conditioner a heat pump wheezes when turns off?
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Related questions

How much heat can a central air conditioner remove?

It`s rated capacity in sensible and latent heat.


Will central heat work without air conditioner?

Yes, as long as it a gas system and not a electric heat pump system


What happens when central air conditioner freeze?

my copper lines freezing on central air unit.


My central air conditioner is not heating and my unit is only a year old. Can anyone tell me why?

Could it be because an air conditioner is not designed to produce heat?


How is the air conditioner used?

There is a penguin in there and it throws ice into the air condicioning and the heat melts the ice and turns it into air.


What is a central air conditioner?

Central Air Conditioners are installed into your house to provide cooling air in every room using a duct system. They are very refreshing on a hot day.


Why does your air conditioner or heat squeal when you turn them on The air and the heat are both working but there is an awful noise?

You've got trouble with your heater fan - or the motor that turns it. Same fan for both heat and AC.


What is geothermal air conditioning?

Geothermal air conditioning is a central cooling system that delivers cool air by pumping heat towards the ground. The difference between it, and an Air Conditioner, is that while an Air Conditioner uses a refrigeration cycle to de-humidify a room, a geothermal air conditioner takes advantage of the ground itself as a heat sink to pump the heat away from a home and into the ground.


Does an air conditioner blow out heat or blow out cold air?

An air conditioner blows out heat


How can you determine the best size central air conditioner for a home?

Have a reputable A/C contractor perform a Manual J(heat load calculation on your home).


What happens to absorbed light?

it turns into heat


What is the difference between an air conditioner and a heat pump?

An air conditioner if functioning as air warmer or air chiller can be called as a type of heat pump. If an air conditioner is working as an air de-humidifier then it no more a heat pump.