You Don't Have To Make The Same Mistakes

I always took my home's heating and cooling system for granted. That is until I found myself battling one of the hottest days in years and my air conditioner simply refused to turn on. After contacting my local HVAC contractor, I learned that my cooling coils had frozen over from a lack of maintenance. He did get my AC back up and running that day, but he also helped me to look at my heating and cooling system in a whole new light. I have spent a lot of time over the last few years learning more about how to properly maintain my HVAC system and ultimately lower my energy costs. Today, I would like to share this knowledge with you so that I can help you to avoid some of the costly mistakes I have made in the past.

A Troubleshooting Guide For Your Walk-In Freezer


As a Heating, Ventilation, and Air-Conditioning (HVAC) professional who services commercial facilities, you may be faced with the task of maintenancing walk-in freezers for some of your clients. A walk-in freezer may be used for many types of businesses, like factories, restaurants, and other other place that require large freezers for storage. The walk-in freezers will require servicing due to normal wear and tear, as well as repairs to damage or broken parts. Here is a list of common walk-in freezer issues and the troubleshooting process that may fix them.

Freezer Won't Run

A walk-in freezer that doesn't run is quite common but can be a simple fix. To try troubleshooting the problem:

  • Check the power to the freezer and make sure it is plugged in. 
  • Test the outlet for voltage
  • Check for a blown fuse
  • Make sure the there isn't a tripped circuit breaker

Freezer Isn't Cold

If the walk-in freezer isn't keeping items cold or as cold as they should be, you can try these steps:

  • Check the temperature setting
  • Test the evaporator fan. To test the fan you will need to  take the connectors off the fan first. Then all you need to do is spin the fan blades to see if they spin smoothly.
  • Test the temperature control by placing a cup of oil or alcohol with a cooking theremometer inside in the freezer for two or more hours.

Freezer Is Running Loud

When the walk-in freezer is running louder than it should, it usually indictates that there is an issue. Troubleshoot the noise issue by:

  • Check the drain pan and clean it if necessary
  • Check the condensor fan that is located outside the facility and will be the back of the freezer. Check the fan blades for damage. Spin the blades to make sure they spin smoothly. If it doesn't, the fan motor should be replaced.
  • Look at the compressor mounts in the rear of the freezer. The compressor mounts are used to absorb the vibration from the compressor in the freezer. Over time, they can become thin or hard and this will cause noise in the freezer.

Freezer Won't Stop Running

Another common complaint with walk-in freezers is that it will run continuously. If this is the problem, try this:

  • Defrost the freezer
  • Check the condensor coils, which are used to dissipate heat. When they aren't working properly or are dirty, it doesn't allow the freezer to cool off the way it should. The freezer then runs continuously to overcompensate.
  • Check the condensor fan, as mentioned in the previous step.
  • Make sure the door seals are working properly.


If you try troubleshooting the issues and they don't work, you should contact a local HVAC contractor to repair or replace the freezer. You can also click here for more info.


30 August 2017