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My ac window unit. Can I make it colder.

I have a few different brands of ac units in my apartment.i have to have them run almost 24/7 because my dogs have thick coats and are always super hot.two units are really old and one is maybe 5 years old if that.they blow out air and everything kind of cold but not like it used to.in the past I would just throw out the unit.now that my wedding is around the corner can I do anything to make the air colder?

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Dirt and dust on an evaporator coil is like putting a sleve on a beer. It insulates the coil so that when the air passes through it it can not pick up as much cooling OR ACTUALLY transfer as much heat. Chances are this is why your units are not cooling like they once were. Clean the coils with a pump sprayer with water with a mild detergent, being sure to rinse well.

Posted on Jul 29, 2017

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U do not have control over the temperature of the air; you can control how long the compressor operates with the thermostat. A longer running time equates to a cooler room.

Clean condenser out to maximize efficiency and cooling.

Posted on Jul 29, 2017

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Posted on Jan 02, 2017

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SOURCE: Not cold air cool air?

Check your air filter. if its ok call the guy who installed it and have him fix the leak. It prob is a bad weld joint. Check the joints on the copper tubing inside at the coil and outside at the a/c and feel around and see if there is oil leaking from the joint. If not you may have a leak in a coil or on the txv inside on the coil.

Posted on Jan 22, 2009

  • 16 Answers

SOURCE: window ac unit is not blowing cold air

When the unit is running, go outside and put your hand near the condenser fins, this air that comes out should be slightly warmer than the ambient temp. If it is not you will need to take the unit out of the window and out of its outer case and clean the condenser fins from the inside, this is no easy task as it is very hard to reach. You will want to get a small (toothbrushed sized) brass bristled brush with a long handle. Make sure the evaporator coil (in the front) recieves the same attention and wash the mesh filter that goes in front of the evaporator. Re- assemble and enjoy the cold air.

Posted on Jun 07, 2009

  • 86 Answers

SOURCE: Portable Air Conditioning unit no longer blows out cold air

Clean out the condenser fins with a vaccumn try this first. God Bless have a nice day.
Dickson

Posted on Jul 02, 2009

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Check the drain tube between the evaporator side to the back of the unit. It may have a packing plug installed. If there is one remove it or clean the drain tube.

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Air conditioner wiring diagrams


What brand of A/C is it? Are you looking for the thermostat wiring? Different Brands use different wiring, but the usual is as follows:
R terminal at furnace is 24 volt Hot
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G is used to start the furnace blower
Y is used to start the outdoor A/C
B or X depending on Brand is the 24 volt common

Yellow and B or blue is the other wire that goes to the outdoor unit
If you want more info, I need Brand, and type of unit, gas furnace and A/C, electric furnace and A/C, or is it a heat pump for the outdoor unit?
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2 Answers

AC Thermostat is set to 78 but wont cool past 79 or 80


If your unit is running 24/7 you are either low on charge or the unit is to small for your house.
A 20° temperature difference is about normal for the room air vs the air coming out of the ducts, but the room air and the leaving air should keep getting colder and colder.
An air conditioner should cycle approximately 3 maybe 4 times in an hour if it's properly sized.
As for the thermostat thermometer they are very cheap and are more for reference than actual temperature, so if 78° is not comfortable, then you should set it lower but not rely on thermostat being accurate or what the thermometer is saying as long as it is consistent.
The air conditioner and thermostat can also be set below 78°, there's a lot of people set them at 72° and below with no problems.
the only thing is if you have real low humidity you'll need to watch indoor coil or the suction line (the big line) on your outdoor unit and make sure it doesn't freeze up on you.

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