Why Is My HVAC Thermostat Not Working?

Do you ever get that issue that your HVAC thermostat is not working properly? Sometimes, we must make a beeline for our thermostat because the indoor temperature does not match our thermostat reading. Whether it’s a chilly night or a brutal summer day, thermostat problems can be frustrating and alarming.

Some people tend to replace their HVAC system if the thermostat is not working. But you should remember that all thermostat problems do not result from a failing HVAC unit or broken furnace. You might feel alone and frustrated when your thermostat is out to get you. But don’t worry; we’re here to save you!

In this write-up, our experts will share why your thermostat is not working and when to call a professional.

Thermostat not working

Reasons Why Your Thermostat is Not Working

It is vital to catch the early indicators of your thermostat problems; otherwise, they can result in costlier repairs. The following reason will help you identify your thermostat issue and fix it as soon as possible.

  •         Outdated Thermostat

Electronic equipment doesn’t last forever, not even your thermostat. If your unit is over 10 years old, it may be the right time to replace it. An outdated thermostat can affect your HVAC system’s overall performance and efficiency, resulting in higher energy bills. You need to invest in smart and programmable thermostats that are easier and simple to integrate with your existing HVAC system.

  •         Loose Thermostat Connections

Loose terminal screws and wires inside the thermostat can also be the reason your system is not working properly. Check for loose connections and ensure that wires and screws are not corroded.

If your thermostat’s heating, cooling, and fan connection is detached or corroded, your thermostat may not be able to communicate appropriately with your HVAC system. Secure loose wires, tighten terminal screws and avoid removing the thermostat cover without turning off the power.

  •         Dirty Thermostat

Your thermostat will only function if you ensure its regular maintenance and cleanliness. Spider webs, dust, and dirt can coat the thermostat and disturb its electrical connection with your HVAC unit. You can gently clean the inside components of your thermostat using a soft brush.

  •         Poor Airflow

Any problem with the airflow can also stop your thermostat from working properly. An airflow problem can cause AC or furnaces to freeze or overheat, resulting in thermostat malfunction.

  •         Power Failure

The thermostat’s power failure is the main reason why your thermostat is not working. If the screen of your thermostat is dark, it means that no power is getting into your system. Before panicking, check for tripped circuit breaker, blown fuse, and dead batteries.

Call a Professional

If your HVAC thermostat is on the fritz and you don’t know what to do. Don’t panic and call the professionals of Diamond Air Design. We have the right tools to diagnose and repair the problem. Drop us a message, and we will make your home comfortable again soon.

Let’s Get Started. Ready to speak with an expert?

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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