Safety Instructions for Air Conditioning Repairs – A Guest Post!

I know it’s getting a bit cooler now, but a few short weeks ago here in Florida, we had some big air conditioning troubles at our house. And if there’s anywhere you DON’T want to have air conditioning problems, it’s definitely FLORIDA!

We tried a few different things (in our total inexperience with air conditioners) and nothing worked. We  finally called a local company to come out and repair it for us.

So when Jake Hyet contacted me regarding a guest post on fixing your OWN air conditioner, I thought it was a fantastic idea! Let’s see what secrets he has for us…

When you find yourself having trouble with your air conditioning, your first thought is to call for the repairman to come out and make air conditioning repairs.  However, you just might be able to identify and fix certain problems yourself and do it safely, too.  Here are some steps to take to safely repair your air conditioner before you call in a repairman:


The Air Conditioner Doesn’t Turn On

1.  First check to be sure that the thermostat is set to “cool.”

2.  Check for a blown fuse.  Normally an air conditioner operates on a dedicated 240-volt circuit.  If you have in fact blown a fuse, reset the fuse.  If that still doesn’t do it, then on to the next step.

3.  Check if the furnace power switch is turned on, and then check the switch on the outdoor condenser as well.  If that isn’t the problem, then proceed to Step 4.

4.  Switch the power to the air conditioner off.

5.  Remove the cover from the thermostat.

6.  Unscrew the wire from the Y terminal using a screwdriver which is compatible.  The terminal should be clearly labeled.

7.  Hold the wire by the insulation and touch the bare end to the R terminal (which should also be clearly labeled) for a period of two minutes.  If the air conditioning begins to work, it means that the thermostat is broken.  If it doesn’t, then the problem is with the air conditioner itself, and you will need to call for air conditioning repairs.

Central Air Conditioning Blowing Hot Air

If you have central air which has just been added to your home and it begins to blow out hot air, the problem could be with the air conditioning installation.  It could also be something as simple as the heat is on.  As you were setting the thermostat, you could have flicked the switch over to “heat” instead of “cool.”  

Compressor and Condenser

Head on outside and check the unit.  Your compressor and condenser coils are located out here.  Be certain the outside power switch is turned on to power the compressor.  If it lacks power, depending on the air conditioning installation, the system might run from the inside air handler, but it will not cool.  While you’re at it, check if there is debris such as leaves or other items blocking the air intakes on the system.  This too can keep the air conditioner from cooling properly.  


Compressor problems or leaks can lead to problems with the refrigerant that can prevent the air conditioner from blowing cool air.  In this situation it’s best to leave the repairs to a professional.  It could be a low refrigerant charge which can cause low cool air output or none at all and possible icing of the condenser coils on the interior of the outside unit.  This type of repair is fairly inexpensive and shouldn’t hurt your wallet too much.  However, if the compressor is the problem, you just might have to replace it altogether, and that can be quite an expensive repair.

Clogged Air Filter

A clogged air filter shouldn’t completely keep the air conditioner from producing cool air, but when you have a dirty air filter it can reduce the amount of cool air your system puts out and keep it from cooling properly.  It only costs a few dollars to buy a new filter; unclip the old one and insert the new one by you.  If you allow the filter to remain clogged, the dust circulating in the air in your home will sooner or later clog the filter and reduce its ability to cool.

Jake Hyet is an expert on static air conditioning installation and static air conditioning repairs Brisbane, having repaired air conditioners for seven years.  He writes extensively about air conditioners and related topics.

Thanks, Jake! I learned some good tips today, what about you? What did you not know before reading this post! (And hey, I like that some of these tips apply to your heater, as well!)

Due to the amount of comments from all of my wonderful readers, it is not always possible for me to respond to each one. However, I absolutely do read them all, and if youโ€™d like to address something specific, or have a question for me, please donโ€™t hesitate to email me at I will respond to your email as soon as possible! Thank you for visiting the blog!

43 thoughts on “Safety Instructions for Air Conditioning Repairs – A Guest Post!

  1. Changing the air filter of your air conditioner, will significantly improve the quality of the air in the room. This should be done atleast once on every 6 months for people who suffer from asthma or any other kind lung diseases.

  2. This is all a bit beyond me at 72, and way past my husband’s understanding. However, we’re lucky–we live in cold old England. The landlord fixes the central heating and checks the safety every year.

  3. Changing or at least cleaning the air filter at least once a year (like for us here in MA who only use an AC 3 months a year) is SO important!

  4. Eventually I am going to have to call an air conditioner repair guy-but since it is the winter and I am in NY–maybe I’ll just change or clean the filter and wait a bit!

  5. Great tips! When something is up with ours we call and have our landlords send out the company. Luckily we rent, but when those suckers are down for the count it’s awful!

  6. We actually blew a fuse on our furnace a few weeks ago. I had no idea our a/c or furnace had those kinds of fuses. (And now that I do know, it’ll be $12 to fix versus a $60 service call.)

  7. Our air conditioner blew this summer and we never got around to fixing it. I’ll definitely have my husband check for a blown fuse first.

  8. Those are all great tips. Hubby isn’t that handy so when our went on the fritz he decided to just buy a new one. Wish this post was around then. Would have surely saved us some money.

  9. Lots of great information. We live in a warm weather state too and your air conditioning always goes out when it is 110 degrees out. I will have to make sure my husband sees this.

  10. This past summer our heat pump stopped working on one of the hottest days of the season. Good thing our repairman is a family friend and he was here ASAP. You don’t realize how much you depend on your air conditioner until it stops working.

  11. I’ve been in Florida without a/c for 21 days straight (3 hurricanes went through Palm Beach County back to back). It was not fun, but it was SO hot that we didn’t mind the cold showers so much (no electric, no hot water).

    A/C repair tips, always cool to post. haha, no pun intended ๐Ÿ˜‰

  12. A good solution shared on identifying the need of repairing the air conditioning system. Most of time we ignore the singes and the system goes down. Surely these points will help us to know the need of air conditioner service.

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  15. I’m useless at DIY, not a good trait for a guy! I’ve even worse because I’m an engineer so people can’t understand it. However, I am good at following step by step instructions so this article is perfect for me. Looks like the rest of the site will be good for me to. I’m away to check out the DIY and Gardening sections.

  16. This is some really good information about air conditioning repairs. I liked that you pointed out that you should check for debris being in the unit. It does seem like a good thing to be aware of when you need to get your home cold. I can’t sleep if my room is really hot.

  17. I really like how you shared all of these tips for getting your AC fixed yourself and what safety precautions you should take when you are doing that. This will be really helpful for me because I am looking into repairing my AC myself. I just need to find the right parts for the repair so hopefully I can find a shop where I can get the parts that I need for my AC.

  18. This is some really good information about air conditioning. My current Ac hasn’t been working well. I like that you pointed out that it would be smart to check if any fuses have blown. I didn’t even think about checking something like that.

  19. As I was reading your article, you state that if your central air unit is blowing hot air, it is possible you have your thermostat set on heat instead of cool. It’s not warm enough where I live to turn on the air conditioning yet. I assume that if the thermostat is set to cool and it is blowing hot air, I would need a professional to come out and service my air conditioning unit.

  20. This is some really good information about air conditioning. Few days ago my Ac hasnโ€™t been working well. I like that you pointed out that it would be smart to check if any dirt into the filter because dirty air filter could reduced the amount of cool air. I didnโ€™t even think about checking something like that. Thanks for sharing this tips!

  21. It’s great that you mentioned that the air conditioning could have issues in insulation if the thermostat is broken or something inside it. My father and I have been trying to figure out what’s the problem with our home A/C. I’ll share this article with him later. Thank you!

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