The thermostat reaches the desired temperature, the indoor unit shuts off, the air stops blowing, but the outdoor unit keeps on running. The outside portion of your air conditioner is most often referred to as the “condenser unit.” Whereas the inside part of your air conditioner is responsible for absorbing heat from your home’s air, your outside unit’s job is to release that heat to the air outside. You have a heat pump. The fan setting controls your AC's blower; A fan inside your system that helps distribute air throughout your home. Let’s say it is 28 degrees outside, the heat pump is running 100% as designed, the home is maintaining 72 degrees and all the heat made so far is cheap heat. How long should the furnace or AC run in a given cycle? Do a quick Google search and you should be able to discern whether you have an air conditioner or a heat … Heat pumps In summer, a heat pump is just an air conditioner. A mini-split, ductless system, does away with vents. If you can tolerate most of the summer heat – save for the absolute hottest of days – you'll want to use the AUTO setting. When the heat pump is running the large fan on the outside of it is called the condensing fan motor, which should kick in at some point and blow the air out through the fins. What is the best roll on truck bed liner? However, the outdoor unit struggles to absorb heat from the air if dust, leaves/grass or a fence block airflow over the unit’s refrigerant-filled coils. The motor could be going bad or its run capacitor. A furnace only produces heat by burning a fuel or using electric and also moves the air inside. The bottom pan in the outside heat pump unit has drain holes that need to be kept clear for proper drainage. Homeowners generally favor heat pumps for their efficiency. Parts of a Heat Pump The heat pump works in conjunction with the air handler to distribute the warm or cool air to interior spaces. On a dual-fuel heat pump, why does the heat pump outdoor unit normally shut off when the furnace comes on? It is basically an air conditioner in the summer and it’s a heater in the winter. The AC unit won't turn on Usually when the outdoor unit doesn't turn on, it is because the circuit breaker has been tripped. Your outside AC condensing unit is likely running in order to heat your house. Auxiliary Heat. You can google heat pumps and learn how they work. Therefore, a heating system stuck in AUX heat will run up an energy bill. -I'll only add this: There are times when the outside fan does run BUT the fan will shut down in defrost mode. Is this OK? However, internal errors can cause them to run extremely inefficiently. iMarket Solutions: Dedicated to Contractor Success. Before you call for service, check the thermostat to … But that’s only because the compressor and motor in the outside unit are required to move refrigerant from outside to in, absorbing heat from the air and bringing it indoors. Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. Emergency Heat is typically triggered when it is 35°F and below outside. But in the cooling mode, it could run forever unless you turn the breaker off. This is called staging, if you turn the system to emergency heat just the strip heat or … Well, lucky for you, there’s a simple answer: your outdoor unit is running during the winter seasons because it’s a heat pump. What does your outside air conditioner unit do? When we had warmer days, say 35 or warmer, the unit did run outside. It will run when you have it on heat or air. For more info including a troubleshooting guide, check out the heat pump page at my source. 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