Repairing a Home Air Conditioner?

September 27, 2017

My AC stopped working. I replaced the filter and am still getting no cool air. Is there any way to repair it without having to pay so much money?


I am in the process of selling my house as is, but need air. I live in Columbia South Carolina. It is too hot to sit in a hot house.


Gold Post Medal for All Time! 677 Posts
September 27, 20170 found this helpful

You could try putting freon in it. That would be the cheapest way to fix it. The worst case scenario is that the compressor is gone, and that is expensive. In a pinch you can go to sleep in a wet t shirt, or have a cold cloth around your neck during the day.

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Diamond Post Medal for All Time! 1,246 Posts
September 27, 20170 found this helpful

Is it a central unit or a window unit? If its central, it might be a safety switch at the top or the bottom of the unit. That switch sometimes gets activated when changing the filter out.

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Diamond Post Medal for All Time! 1,298 Posts
September 27, 20170 found this helpful

You could call some companies nearby if they offer a free inspection and hopefully you come across someone honest.

Our water heater went out and a honest company told us all we needed to do was clean it and it'll work again. Whereas another company told us we needed a new one ASAP. We cleaned the water heater where the flames are and it works like a charm again!

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Silver Post Medal for All Time! 433 Posts
September 27, 20170 found this helpful

Fix air conditioner.

  • Make sure it is properly tilted and the water is running out.
  • Also make sure you have a proper air flow.
  • Also clean the evaporator coils with soap and water.
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  • Make sure the fan motor moves easily and check for damaged blades.
  • If they do not then they need to be changed.
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3 More Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

September 18, 2018

I have a window AC unit whose function knob has broken. How can I get a replacement? It's a Maytag (now Fedders?): service #M3X05F2A-C; serial #LP 241277316Y.


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September 18, 20180 found this helpful

My uncle used to use a old pliers duct taped shut around the metal prong to turn the "dial" when he could't find a replacement! This memory made me laugh...but it worked!! I think he used it like that until the machine finally gave up the ghost!!


I hope Judy's suggestion finds you the actual item.

If not, perhaps you can find a knob at a flea market or as a trash pick find!

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September 19, 20180 found this helpful

Many of these knobs are generic so you may be able to find a replacement even if it is not an exact model number.

Google used appliance stores with your zip code. Several names should appear but you only want names of small stores so cancel out Home Depot type stores and start calling to see if they might have a knob to fit your AC unit. These stores usually have units that are used for parts and just might be able to help you. Be sure to take your broken knob with you when you find a store.


Better still, if you know of a small appliance store near you then just take your broken knob and start searching. You might have to try several knobs to find one that fits. If you find a close fit that might work wrap it with cloth for a more secure fit to see if it will work. A rubber band might help you check it out instead of cloth.

I have found needed appliance pieces at regular appliance stores as they take trade-ins and usually have several "old" units in their discard area.

Sometimes these discarded appliances can be found at the back of furniture stores and appliance stores.
A knob from another appliance may even work.

If your search is unsuccessful then Pghgirl's method will work. I have wrapped needle nosed pliers with duck tape (painters tape is better) but it is sometimes awkward to use.

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January 14, 2016

This question came to my mind after seeing my brother's air conditioning unit. From what he tells me, his son and a couple of his friends were throwing some pebbles at it. Because of that, it damaged parts of the fan and that was what got me worried.

I think he would be more worried because it seems like he might either need to replace the fan or just do a new air conditioning installation because the unit is hardly working now. How much damage would a chipped fan do if it were to be ignored?


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September 26, 20170 found this helpful

By the sounds of this the fan isn't the only thing the kids damaged with the pebbles.

  1. Stop using the unit now so you don't do further damage to the motor.
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  3. Find the make and model of your unit and order a replacement fan.
  4. Most fans are straightforward to replace and it sounds like your son could replace his fan himself.
  5. When he opens the unit he must look for any pebbles or pieces of the fan blade left inside the unit.
  6. These pieces can get lodged in the motor and cause further damage to the unit.
  7. I would suggest taking the unit apart first and inspecting the inside of the unit for other damage. Look for the small rocks and pieces of the fan that has broken off.
  8. Determine if replace the fan alone will fix this problem. If not check to see how much a new compressor motor and fan will cost.
  9. If the cost is the same as a new unit I would suggest he replace this unit.
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October 21, 2010

My AC unit compressor is not switching on. It might be failure of a capacitor or not. Any suggestions?

By vijay from Hyderabad


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October 24, 20100 found this helpful

A.c.'s and furnaces are not something for a person to fool with unless you are qualified. About 85% of air conditioner and furnace problems are from people not maintaining them once a year. It takes more than just changing the filter monthly to maintain these appliances. You should have both tuned up once a year. It's no different than changing the oil in your car and maintaining your vehicle.


Call a professional. The average cost of maintaining these appliances is a lot less than replacing them or paying for an expensive repair. Most companies have sales in the Spring and Fall for maintenance. Check with your better business bureau and hire a reputable company to do this.

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