{"id":2661,"date":"2020-08-15T16:47:48","date_gmt":"2020-08-15T16:47:48","guid":{"rendered":"https:\/\/knightplumbing.ca\/how-to-stop-my-air-conditioner-freezing-up\/"},"modified":"2025-04-26T04:10:18","modified_gmt":"2025-04-26T04:10:18","slug":"how-to-stop-my-air-conditioner-freezing-up","status":"publish","type":"post","link":"https:\/\/www.knightplumbing.ca\/?p=2661","title":{"rendered":"How To Stop My Air Conditioner Freezing Up?"},"content":{"rendered":"

Why is it bad news to have your air conditioner freezing up? Well, first of all, a frozen AC won\u2019t have much cooling power<\/a> to combat our Calgary summer heat. Even worse is the fact that frosty air conditioning coils might signal a serious problem \u2013 one that will continue to get worse unless you take care of it quickly.<\/p>\n

When we talk about a frozen AC – what we are talking about is the condenser inside your forced air furnace. There is a heat exchanger attached to your furnace (which could be leaking)<\/a> that you will see the AC lines entering and leaving – that is the condenser.<\/p>\n

Now that you know where to look to see if you have frozen AC – let\u2019s talk about how some of the causes and fixes so you can get your AC back up and running fast:<\/p>\n

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  1. Thaw out the AC.<\/strong> First things first – if you notice your air conditioner freezing up (air is barely circulating and it won\u2019t be very cold), turn it off right away so it has a chance to thaw out. To help it along, leave the system set to \u201cfan\u201d or warm it gently with a blow dryer.<\/li>\n
  2. Look at the thermostat.<\/strong> Is it possible that someone turned the thermostat way too low? Your AC shouldn\u2019t be set under 20\u00b0 (even when you\u2019re in a big hurry to cool your home);\u00a0 If the AC is set to run continuously for hours it could bring the refrigerant temperature down below freezing. Turn it up to a less extreme setting.<\/li>\n
  3. Inspect the filter.<\/strong> An air filter that is choked with dirt and dust will keep your system from running efficiently. It’s a good idea to check this first, as it is a common cause of frozen AC condensers and is super easy to fix. Change or clean the filter as necessary, as often as once a month when you\u2019re running your AC a lot.<\/li>\n
  4. Clean the evaporator coil. <\/strong>Cleaning your evaporator coil will help stop your air conditioner freezing up because of the clogs caused by dust and pet hair. A clean coil will work better and generally enable the system to run more efficiently. An annual cleaning and tuneup is included in a Knight Preferred Membership<\/a>.<\/li>\n
  5. Check the condensate drain line.<\/strong> The line which drains off condensation (a byproduct of the air conditioning process) sometimes gets blocked or loose. As a result, your AC may freeze up. Professional repair or cleaning will solve this issue.<\/li>\n
  6. Make sure the fan\u2019s working right.<\/strong> Freezing may be caused by a non-functional furnace fan, which does not allow good airflow around the evaporator coil. If your fan\u2019s rattling, turning extra-slowly, or not working at all, you might need repair or replacement.<\/li>\n
  7. Take care of any refrigerant leaks.<\/strong> Leaking refrigerant, due to holes or cracks, could be responsible for your frozen AC. Have one of our technicians take care of this complicated fix.<\/li>\n<\/ol>\n

    Get Your AC Working Right<\/h2>\n

    Solve your cooling problems fast with Knight\u2019s professional team. Our air conditioner repair<\/a> and maintenance options work for you 3 ways:<\/p>\n