Air Ventilation and Air Conditioning(HVAC)?

#1, the system suffers from outside heat problems. It's a bit difficult to get refrigerant to boil off into a vapor in very cold temperatures. External heating has to be applied, sometimes, to get the refrigerant back to a gas for another cycle through the compressor. The other prime issue is the capacity of the system to provide heat to begin with. In colder climates the use of resistance heating strips has to augment, or perhaps replace the heat pump system. This makes the power company very happy, and the consumer very sad. If the system owner switches on the "emergency heat", the heat pump unit is turned off, and the resistance strips on, and they take over the home heating. Gas is still the best way to heat a home, unless you are willing to put up with the chose of using wood, or coal.

#2, 2 coils are always used, 1 is for the outside condensing of the refrigerant to a high pressure liquid, the inside coil, or evaporator, for the transfer of the refrigerant from a liquid to a gas, thus absorbing heat, in the cooling phase. While a very real source of trouble, the 3 way valves are commonly used to "reverse" the system so that in heating, the coils used in the summer to absorb heat, are now the condensing coil and give off heat, turning the refrigerant into a high pressure liquid which then goes outside where hopefully the air has enough heat in it to cause the refrigerant to flash off into a gas before going back into the compressor. This is the primary cause of the outside coils icing over in the winter. The only way to have a fully separate system would be to have 2 sets of coils, 1 set for operation during the summer, and one set for use during the winter, each with it's own compressor. While I would not have a heat pump, unless someone paid me to have it, and operate it, a system with a 3 way valve is the best option.

each and every motorcar I actual have ever owned does this different than the air administration grew to become additionally set to recirculate or max on the AC suggestions. My better half's Jeep besides the easy fact that doesn't. Off on the fan additionally blocks all ventilation on any selection for air outlet.