A/C Units and Heat Pumps and How They Work

 

A/C Unit and how they work

May 9, 2023|HVAC

This system is such an easy system and really is all about removing heat from a home. The gas that is in the line is commonly known as FREON (which is a non-combustible gas used as a refrigerant in air conditioning applications). The gas is very flexible and can condense to a liquid and expand back to a gas allowing heat particles to get trapped within the gas vapor. When it expands it picks up heat and brings that heat with it outside where it is expelled out of it with the help of a fan then the gas is condensed pushing it back together and turning it back to a liquid state, which is cooler. As it expands "turning back into a gas" in the evaporator coil the gas picks up heat and the cycle continues back to the condensing coil then back to the evaporator coil again and again. With heat pumps it just runs backwards instead of picking up heat from the home it picks it up outside and expells it into the home. The gas that was formally used was R22 and that was stopped manufacture in the US for production or cannot be shipped in as of January 1, 2020. The gas that is preferred now is the 410a and that will be fazed out by 2037. The gas that has most of the HVAC up in arms is the R32 gas which is flammable, but to have it start on fire is so specific and extremely unlikely to exist that there isn't much concern for the vast majority. The next possible gas is R454B which has a lower Global warming potential. Whatever comes up next will be likely more expensive to the consumer with a giant price tag of $20,000 or more, now the coolest thing here is that it will cost less to run and may outlast earlier models.   

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