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Air Conditioning and Coolant

Used for cooling the interior of buildings/cars, air conditioning is a system/machine designed to balance the air temperature within an area. A coolant then redirects the heat of the machine to other devices that may use or expend it.

7,241 Questions

How much oil do you put in the ac compressor when replacing it?

Amount of compressor replacement oilFrom what I've read in other AC Manuals and what I've practiced, with regards to the amount of refrigerant oil to add, is to add the same amount that you drain from the old compressor unit that you removed from your system. This amount, from my experience is about 5 oz, however, it varies from compressor to compressor. The most accurate way to asses this, short of contacting the compressor mfg, is to apply what I said in the first sentence.

add 6 ounces for a single ac system and 10 to 12 ounces for a vehicle w/rear air.(like surburbans, vans etc.)

How much is a window air conditioner at a pawn shop?

Well, honey, it really depends on the brand, size, and condition of the air conditioner. You could be looking at anywhere from $50 for a beat-up old unit to $200 for a shiny new one. Just make sure to haggle like your life depends on it, and you might just snag a deal worth bragging about.

Why is white smoke coming from air vents when I shunt down the cooling effect on my car AC?

White smoke coming from the air vents when you turn off the cooling effect of your car's AC system is typically caused by condensation build-up within the system. When you turn off the AC, the cold air stops flowing through the vents, causing the moisture in the system to evaporate and be released as white smoke. This is a normal occurrence and is not usually a cause for concern. However, if the smoke persists or is accompanied by unusual odors or sounds, it may indicate a problem with the AC system that requires further inspection by a professional mechanic.

How does an air conditioner work?

An air conditioner removes heat from indoor air and transfers it outdoors, creating a cooler indoor environment. Here’s a breakdown of the process:

Evaporator Coil: Warm air from the room is drawn into the AC and passed over the evaporator coil containing refrigerant. The refrigerant absorbs heat from the air, cooling it down.

Compressor: The refrigerant, now heated and in gas form, moves to the compressor outside. The compressor increases its temperature and pressure, preparing it for heat release.

Condenser Coil: The hot refrigerant gas travels to the condenser coil, releasing

heat to the outside air. As it cools, the refrigerant turns back into a liquid.

Expansion Valve: The refrigerant passes through an expansion valve, which lowers its pressure and temperature, making it ready to absorb heat again.

This cycle repeats until the indoor temperature reaches the set level on the thermostat, effectively cooling the room!