What are the parts of a central air unit?

Question

I am looking to find out the electrical parts of a central air conditioner.

Answer 1

There are three basic parts.

1. The evaperator (the box in the basement, etc. usually attatched to the furnace)

2. The condessor (the box outside)

3. The thermostat (the control in the house)

These are the basic "parts," but these contain other parts also. They say a picture is worth a 1000 words so I attatched a link that has a pretty good picture of and Central AC system.

http://www.remodelguide.com/improve/comfort/centralair/centralair_works.html
This is probably better than me writing an explaination as long as my arm. :)

Answer 2

Hmmm. Ok, I'll bite.

The thermostat runs on electricity. It controls the furnace or air handler, which in turn, controls the condenser unit, outside the house. This a low voltage, usually 24 volts.

There should be a disconnect outside for the condenser unit.

In the condenser unit there is a relay with contacts which connects to the motor, which is part of a sealed compressor unit. The motor turns the compressor. There is also a capacitor which starts the motor.

Throw in the wires to connect all these things and there you have the electrical parts of a central air conditioner.

I hope this helps.

Answer 3

All a.c. units are basically the same. The central units separate the interior from the exterior positioned units.

In a central unit, OUTSIDE of the house is the compressor unit. The refrigerant gas is compressed into a liquid and cooled to ambient temperature by pumpint it through a heat exchanger. The unit has a compressor that is driven by the compressor motor and a cooling fan driven by a fan motor. It has a relay that is driven by the thermostat (thermostat inside); when the thermostat notices the room temperature is above set point, it sends 24 v ac to the relay outside which closes the high voltage relays and turns on the compressor motor and compressor fan outside and furnace fan inside.

Inside, above the furnace itself is the evaporator. The liquid refrigerant enters the evaporator as a liquid where it is exposed, through a heat exchanger, to the hot house air. The hot house air warms the liquid refrigerant which then vaporizes dropping the temperature of the house air (cooling it). The furnace fan distributes the cool air to the house and draws more warm air into the evaporator to continue the cooling process. The furnace fan is energized by the thermostat through a relay as mentioned above.

Answer 4

With the age of your A/C you could attempt having the coil professionally wiped sparkling to enhance airflow. additionally, how long because of the fact the furnace fan grew to become into bumped off and the squirrelcage fan on it wiped sparkling? and how is your furnace clear out. the subject you run into, is age-your ought to replace the A coil and your 15 12 months previous condenser could die. then you definately get to chase extra new areas after previous areas. and you have an R-22 device notwithstanding if that's that previous-areas have become harder to discover as R-22 stages out. that's a judgement call. you could attempt getting a expert to bathe the two the A coil and the fan to work out if that facilitates. exchange the clear out each and every 3 months, or faster on HEPI filters. good success

Answer 5

I think if you ask this question, then you shouldn't be messing around with these part. It shows you are not familuar with this and if you want to know so that nobody gives you a line of bull, then make sure they are qualified to do so. It may be cheaper in the long run to hire a pro.

Answer 6

fan motor. inside and out
t-stat
circuit board
compressor
relays
capacitor