Air Conditioner not blowing cold air FAQs

How to Fix AC Not Blowing Cold Air Problem in 2023

So is your AC not blowing cold air? If so, know how to fix it at home using some practical homemade ways. But why does this issue occurs in the first place? It happens when your AC unit malfunction.

But do not worry, this cold air problem is common. About 30 percent of homeowners experienced that their home AC not blowing cold air but hot air. If you see that your AC is not delivering cold air but running continuously, then know you have a bigger problem that needs a fix soon.

How to Fix AC Not Blowing Cold Air Problem

If your AC is not blowing cold air properly, the issue is in the following AC parts. They need immediate attention.

  • A compressor problem
  • Thermostat issues
  • Low refrigerant levels
  • Clogged air filter
  • Power supply problem

If this problem persists, then your whole AC unit is in danger. Shut it off to prevent any bigger damage. But fortunately, there are several known causes for AC not blowing cold air issues that you can use to fix this issue at home.

Follow the below steps, and hopefully, your AC system will work fine. First, start with the power supply.

1. Check the Electrical Supply

Power Source for AC

First, check the power supply. If there is a power surge, then the chances are that the circuit breaker got tripped and the motor stopped its work. You need to reset the whole AC system.

Reset your circuit breaker and turn on the AC again to see if the problem is solved. Check the power cord to ensure it is working just fine without any trouble.

2. Check the Refrigerant Gas Level 

Check the AC Refrigerant Level

Check the refrigerant level. It is a chemical that is used to cool hot air. The refrigerant contains Feron in liquid form. It is converted into gas in the process, which is responsible for the coldness in the AC unit. The refrigerant does not reduce automatically unless a long time has passed, but a leak can cause it.

If there is a leak, the AC system will not have the required cooling gas to chill the air and send it inside. (The main issue that occurs here is the frozen AC problem, but this cold air problem can also occur). 

So you need to fix the leak as soon as possible. Just change the refrigerant and solve the issue of the AC not blowing cold air. It looks like an oval shape metal container similar to household gas cylinders but in a small size. If you do not know how to do that, call a licensed HVAC professional and fix the issue.

3. Check the Thermostat of your Air Conditioner

Inspect your AC Thermostat

Now check the thermostat. It is the controller of your AC unit. The remote you have is the controller of that thermostat. So check the batteries and try to change the temperature up and down to see the effect.

Some thermostats have an automatic setting that can prevent the change you have asked for. Set the thermostat to the manual, and try again. If it does not work, then you have a thermostat problem. Change it, and the problem will be solved. 

4. Check the Air Filters of Your AC

Check the Air conditioner Filters

Every AC has air filters. They filter out the dust particles from the air you receive in your house. Time on time, they get clogged, causing a big malfunction in the AC system.

If you do not clean them occasionally, it can become the cause of the AC not blowing cold air. Experts say you should change the filter every 90 days. 

It may not be suitable for you as those are not that cheap. That is why clean them often every three months, replace them once a year, and get better airflow in your house.

5. Have a Look at the AC Drain Line

Each AC unit has a drain line for excess moisture. It is blown away or removed from the air during the cooling process. Over time that drain line can get dirt and debris that prevents the moisture from draining. 

All you have to do it to clean them using a blower. A professional can do this cleaning more effectively. But if you can, do it. No need to pay the HVAC specialist.

6. What about the Cooling Compressor

What about the AC Compressor

The compressor is one of the important parts of an AC system. It helps in the cooling process by controlling the refrigerant by compressing it and converting it to the liquid form as it was before for storing purposes.

Check your compressor for any dust and leaves that are stuck there. Clean in every way to operate it freely. In the winter season, cover it with some plastic. So that the snow and other dirt can not fill it and cause a big problem when you restart the AC in the summer. 

7. Call a Air Conditioner Professional

If nothing is working from the above list, as you have tried every possible homemade solution for the AC not blowing cold air, then your best bet is a licensed HVAC professional. Just call them and fix it by paying his fees. Do not go further. You may damage some costly components.

Last Words

Yes, AC units are complicated. But there are things that can be solved at home, like this problem. But contacting a professional is always a better choice. So now you answer this question, why is my ac not blowing cold air? I hope you can fix your AC. I wish you the best of luck. 

Air Conditioner Issue FAQs

ac not blowing cold air

How to fix an AC blowing hot air problem?

Replace the refrigerant gas and clean your air filters with a possible replacement of the thermostat to fix this air conditioner issue.

How much does it cost to change the AC refrigerant?

Air conditioner refrigerant cost about $80 to replace but it can go up to $300 dollars in some cases.

Why my AC is not blowing any cold Air?

The most possible reasons are that the compressor has a problem, a thermostat issue, a low refrigerant level, or the air filter is clogged.

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About Author

Nazim Ali

Nazim Ali is an engineer who loves fixing things at home. He loves to try new things and share the knowledge with the world.