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Defrost Cycle
See Heat Pump. Also called "defrosting" and "going into a defrost."
When it gets below about 45 degrees, a heat pump running in HEAT mode may develop ice or frost on the coils. There are exceptions to the rule, however, as I have seen heat pumps defrost when it is abve 45 degrees and even in the 50s! If it gets frozen enough, it may have to defrost. A defrost cycle is initiated by the the reversing valve switching the flow of Freon and putting the unit in COOL mode. However, unlike when the unit is running in COOL mode on a hot day, the fan blades in outdoor unit are not spinning, and the system typically has its electric, gas, or oil backup heat running to prevent the heat pump from effectively air-conditioning the house while it is defrosting. Sometimes, depending on a number of factors, a steam or fog may appear above the heat pump (see Steam Show). A defrost cycle can last anywhere from less than a minute to ten minutes or more depending on a number of factors, including outdoor temperature, ice/frost buildup on the outdoor coils, whether or not it is raining or snowing, and what temperature the thermostat is set at.
When it gets below about 45 degrees, a heat pump running in HEAT mode may develop ice or frost on the coils. There are exceptions to the rule, however, as I have seen heat pumps defrost when it is abve 45 degrees and even in the 50s! If it gets frozen enough, it may have to defrost. A defrost cycle is initiated by the the reversing valve switching the flow of Freon and putting the unit in COOL mode. However, unlike when the unit is running in COOL mode on a hot day, the fan blades in outdoor unit are not spinning, and the system typically has its electric, gas, or oil backup heat running to prevent the heat pump from effectively air-conditioning the house while it is defrosting. Sometimes, depending on a number of factors, a steam or fog may appear above the heat pump (see Steam Show). A defrost cycle can last anywhere from less than a minute to ten minutes or more depending on a number of factors, including outdoor temperature, ice/frost buildup on the outdoor coils, whether or not it is raining or snowing, and what temperature the thermostat is set at.
The first time I saw a defrost cycle at my new house, I thought my heat pump wa broken and about to explode!
My heat pump is located right outside the master bedroom window, and it woke me up this morning when it went into defrost.
I was playing with my dog in the backyard on a chilly winter day, when my heat pump went into defrost and scared her so much that she started barking at it.
My heat pump is located right outside the master bedroom window, and it woke me up this morning when it went into defrost.
I was playing with my dog in the backyard on a chilly winter day, when my heat pump went into defrost and scared her so much that she started barking at it.
Defrost Cycle by AutoHVACNut March 15, 2012
Related Words
Defrot • defrost • defrosting • defrog • defrosted • defnotw • defro • defrocking • defrosted lemon • defroster
debrothelizing
The act of changing from having sexual relations with multiple partners to a smaller amount of partners.
Ben was hooking up with a lot of girls it looked like he was running a brothel in his room so Gregory told him he needed to start debrothelizing before he caught an STD.
debrothelizing by Melissa Pennington the third November 7, 2010
defraternize
Similar to the concept of defriending, defraternization occurs when a person removes a friend or a sibling from their list of family members on their facebook profile. It usually occurs when a person decides to finally get 'serious' about facebook or they no longer regard the other person as a brother/sister.
Ex 1. ARJUN: Dude can you believe Aparna just defraternized me from facebook? She said something about how she wants to only keep her real siblings on facebook. Lame!
Ex 2. JEFF: Man this guy Pete is really annoying and I don't consider him my bro anymore. I'm gonna defraternize him.
Ex 2. JEFF: Man this guy Pete is really annoying and I don't consider him my bro anymore. I'm gonna defraternize him.
defraternize by Avnish April 2, 2010
decrotchitize
decrotchitize by Naes Yeliab October 21, 2008
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