5 Common Reasons Your Thermostat Set to Cool but AC Not Turning On

Thermostat set to cool but AC not turning on

You significantly count on your air conditioning system to keep you cool and comfortable throughout the sweltering summer months. However, what happens if your thermostat is set to cool and your air conditioner doesn’t turn on?

You could start questioning what’s causing the problem because it might be frustrating. Even when your thermostat is set to cool, there might be a number of reasons why your air conditioner isn’t running.

However, some of these reasons are more prevalent than others. In this article, we’ll examine the top five causes of your thermostat being set to cool but your AC unit not turning on. Let’s dive in!

5 Explanations for Thermostat Set to Cool but AC Not Turning On

Thermostat Problems

Problems with the thermostat itself are one of the most frequent causes of your AC not operating even when it is set to chill. The thermostat might not have been adjusted to the right temperature, or it could have broken down. In this situation, it’s crucial to call an experienced HVAC specialist to assess the situation.

Tripped Circuit Breaker

A circuit breaker trip is another typical cause of your AC not switching on. This may occur if an electrical surge or overload trips the circuit breaker and turns off the power supply to the air conditioning unit. Simply find the circuit breaker panel and reset the breaker that regulates your AC unit to resolve this issue.

Clogged Air Filters

Your air conditioner may not turn on if your air filters are clogged. Air filters can get soiled and clogged with dust and debris over time, restricting airflow and impairing AC performance. Simply changing your air filters on a regular basis will solve this problem.

Dirty Condenser Coils

Your air conditioner’s condenser coils are in charge of dissipating heat from the system. Your AC cannot turn on if these coils are dusty or blocked with debris, hindering their smooth operation. This problem may be avoided by performing routine condenser coil maintenance and cleaning.

Low Refrigerant Levels

Even if the thermostat is set to cool, your air conditioner may be unable to adequately chill your house or place of business if it is short on refrigerant. Leaks in the system or the unit’s age might result in low refrigerant levels.

In such cases, it’s crucial to have a qualified HVAC expert assess the situation because adding refrigerant to the air conditioning unit without addressing the root cause of the problem might result in more complications.

Wrapping up, it’s common for your AC to not turn on even if the thermostat is set to cool. To stop additional damage to your HVAC system, you should fix any problems as quickly as possible, whether they involve the thermostat or low refrigerant levels.

Do not be reluctant to call a qualified HVAC specialist for assistance if you have problems with your air conditioner not turning on. We at Diamond Air Design are here to assist you with all your HVAC requirements, including urgent repair work.

To make an appointment and maintain year-round comfort in your home or place of work, call us right now.

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Richard Orlando
Richard Orlando
December 29, 2022
Professional all the way! Hunter is the man and I would recommend this company to anyone.
S Reyes
S Reyes
December 15, 2022
Great family owned business. They show up when they say they will and do great work!
Michael C
Michael C
September 30, 2022
I engaged Diamond Air Design to replace two heat pump systems at my residence. From my initial contact to the completion of the project, I received nothing but the highest level of professional service. Brandon and his installation team did meticulous work, completing the project on time and exactly as promised. Diamond Air is a family-owned business with a sterling reputation. From my experience I understand exactly how they attained and why they deserve that reputation. Highly recommended.
Dennis Wilson
Dennis Wilson
September 19, 2022
Excellent installation of thermostat and HVAC unit and ‘fine-tuning’ the unit. Technician very courteous and informative.
Myda Young
Myda Young
September 7, 2022
This is one of the 3 companies I had out to my house. I’m very happy Diamond Air was one I contacted. They offered exactly what I needed, did not upsell me and were right on target on what would solve my issue. Preston, my Service Tech, was ready to answer my questions, was super knowledgeable, professional and just a charm beaming with honesty, kindness and all I could pray for in a service tech. You will not be disappointed putting your A/C equipment in their hands! Thank you Diamond Air Team! You have my business.
DarinJon Christopher
DarinJon Christopher
September 6, 2022
Just another Professional service from Diamond Air Design. We started using this company when Brandon was just starting his business and learning from his dad. His Mom was in the office and we loved it was family assisting other families whom needed help. Preston the young gentleman who came today was very professional and a service tech who explained everything as I like to know what's going on with my equipment.Thank you Sir and I hope you continue to make your career with Brandon's team as you continue to learn. Thanks again Diamond
Ronald Specker
Ronald Specker
August 11, 2022
I had an American Standard Platinum HVAC System installed. Brandon, Stewart, and Preston did the install work. They were scheduled to start at 8:00 am. Stewart arrived at 7:45 am and immediately went to work. Brandon and Preston arrived at 8:00 am with the new HVAC System. I tried to offer them drinks and something to eat but they were more concerned with completing the job. The crew was absolutely fantastic. They completed the install work in about 7 hours. They never stopped working until the job was completely finished. They did an outstanding job installing the new system. The company even filed my warranty paper work for me. I had to do nothing but sit back at let them do all the work, from the install, warranty registration, and setting up the county inspection. They even provided financing for 0% interest rate for 60 months. I would ABSOLUTELY recommend Daimond Air Design for HVAC System Replacement!!!


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