When Your Home's Air Conditioner Just Is Not Blowing Cold Enough Air

10 March 2015
 Categories: Construction & Contractors, Blog


If your air conditioner just isn't working as well as you think it should be, it might have a cooling coil that has developed a leak. This is one of the most common problems with air conditioning units, and it happens to nearly all air conditioners eventually. The good news is that by understanding how the coil in your air conditioner works, you will know when it is time to call a local HVAC contractor out to replace the failed part.

Air Conditioner Coil Basics

The coil inside your home's air conditioner works much the same way as the radiator in your car. "Coil" is just a fancy name for a large mass of small copper tubes filled with Freon gas. The Freon gas causes the copper tubing to become very cold. 

Turning on your air conditioner triggers a motor to start that's purpose is to pull in air from the outside. This air is then blown across the very cold coil and becomes the cold air that blows into your home's vents.

Air Conditioner Coil Failure Symptoms

Since Freon is a gas at room temperature, it leaks out into the atmosphere if the coil becomes damaged. When the air isn't cold enough, then the Freon is no longer in the coil unit where it belongs. The coil is a closed system, and the only way Freon can escape is if the coil has been damaged. This happens frequently, because as the air passes over the coils, it brings with it humidity. Water in the humidity causes damage to the small copper tubing over time. Since the tubing is very small in diameter, it is very easy to damage.

Air Conditioner Coil Failure

Once the coil in your air conditioner has failed, there isn't any other option than having it replaced. While there are some metal tube patch products on the market, they are never a long-term fix. Rather than risk leaking Freon gas, it is always better to simply call a HVAC contractor out and have them replace the part the first time. It will save you a lot of time, money, and frustration.


By knowing how your air conditioner works, you can troubleshoot basic problems and know when it is necessary to call a professional HVAC contractor to come to your rescue. If you believe that your air conditioner is not functioning correctly, then you should have the unit checked by a local HVAC professional like Certified Appliance.