If you notice that your air conditioner is running but has stopped cooling the air, you should start investigating the possible causes.
Having an HVAC malfunction during the summer can be really uncomfortable. If you notice that your air conditioner is running but has stopped cooling the air, you should start investigating the possible causes. This symptom can be attributed to a list of issues that may or may not require professional attention.
Here is what to start looking for and what to do when your unit stops cooling.
Excellent Service. Thank you Zackery
Response from the owner:Thank you for your kind words, Buzz! It was a pleasure assisting you.
They were quick and did an exce
llent job on a very hot day. Thank you
Response from the owner:Thank you for the 5-star rating, Tom!
I’ve been using “THOMAS Hoffmann Airconditioning and Heating” for years now. We have a 30 +\- year old system that works perfectly for us. Although we’ve not had to use it yet, it is comforting to know they offer a 24 hour on call service. I really appreciate that the technicians don’t try to upsell us on anything. They’re a very professional, knowledgeable, and courteous, local-family owned and operated business. I’ve also found their pricing to be very fair and by”fair” I don’t mean “cheap” but reasonable… especially for the quality of service provided by THOMAS Hoffmann HVAC. I love supporting smaller family owned business and this one is top-notch! Thank you guys!
Response from the owner:Thank you so much for your continued support and kind words, Mari! We truly appreciate your loyalty and are glad to hear about your positive experiences with our services. We look forward to continuing to provide you with top-notch service in the future.
Great customer service & experience for our HVAC System! They installed two UV lights and a dehumidifier. On time, great service, the new items work great - Great HVAC Service in St. Louis! Thank you!
Thank you Thomas Hoffman Air Conditioning for doing a great of repairing our HVAC system that was damaged during a power outage. You installed our new HVAC system late last year and promptly responded to our call for repair after a power surge impacted our subdivision.
Response from the owner:Thank you, Don, for your kind words! We're glad to hear that Thomas Hoffman Air Conditioning was able to assist you so quickly after the power surge and that you're satisfied with your new HVAC system. Your support means a lot to us!
Always great service!
Response from the owner:Thank you, Chris! We appreciate your kind words about our service and are glad to hear you had a great experience.
This company is so responsive that I love them. They respond immediately, and I trust them to tell me what needs to be done. I haven’t been steered wrong yet. They are genuinely nice to work with and honest. I use their maintenance program which I highly recommend.
Response from the owner:Thank you for your kind words, we truly appreciate your trust in us and are glad to hear about your positive experience with our services.
Quick response and did a great job. On a Saturday.
Response from the owner:Thank you, Scott! We're glad to hear you appreciated the quick response and great service, especially on a Saturday. We look forward to continue serving you.
Super easy to schedule, arrived on time and quickly fixed my AC. Thank you!
Response from the owner:Thank you, William! We're glad to hear scheduling was easy and that your AC was fixed promptly. We appreciate your feedback!
Giovanni was good…. This is reason we ask for him
Response from the owner:Thanks so much!
As owner of rental and living out of town, it is very easy and painless to have Thomas Hoffman schedule all of my seasonal work with the tenant. Highly recommend!
Response from the owner:Thank you for trusting us with your rental property maintenance, Dan! We appreciate your recommendation!
Just had our annual service on our A/C. The technician, Giovanni, was very professional, friendly, thorough and spent time explaining what all he did and what his findings were. Couldn't be happier. I HIGHLY RECOMMEND THOMAS HOFFMAN AIR CONDITIONING AND HEATING.
Response from the owner:Terry, we're so grateful for your kind words and for recommending us! We're thrilled to hear that you had a positive experience with our technician during your annual furnace service. Thank you for choosing Thomas Hoffman Air Conditioning and Heating!
I called on December 25th at midnight and started leaving a message and Thomas Hoffman the owner called me back almost immediately. He said he would come out the next morning between 8:00 and 10:00 am snd he was promptly on time. He fixed my problem and while he was there I decided to get an estimate for a new furnace and air conditioning unit. The price was very reasonable and the installers one of them being his son were both very professional very courteous, polite, arrived on time and finished the same day. I enjoy knowing that I now have the support of Thomas Hoffman heating and air conditioning along with the peace of mind that comes with owning a Trane. Nothing stops a Trane.
Albert Koesterer
Response from the owner:Albert thanks so much for your kind reviews and your business. We truly appreciate it!!!
I made another service call years after my last review. Once again, Tom did not disappoint. He identified the cause of my newly purchased system installed by another HVAC company. He explained it so simple and easy to understand without the technical jargons. I just wished I had purchased the new equipment from Tom instead of saving a few hundred dollars from his competition.
Response from the owner:Thank you, J, for your kind words! We're glad to hear that Tom was able to assist you so effectively and make everything easy to understand. We appreciate your continued trust in our services and hope to help you again in the future!
I've used these guys twice now and their response time is great, they are friendly, informative, and most importantly, effective. I'm calling these folks every time my furnace sounds weird.
Response from the owner:Thank you for the wonderful feedback, Greg! We're glad to hear that you've had such positive experiences with our team. Providing timely and effective service is our priority, and we're here whenever you need us. Looking forward to assisting you again!
Nick fixed my furnace today, excellent service, very personable and quick service on the coldest day of the year. Thank you!!
Response from the owner:Thank you, Randy, for the fantastic 5-star rating; we appreciate your support!
Very fast considering the weather we were having tonight. Really appreciate it for my mom. Thank you so much!
Response from the owner:Thank you, Felicia! We're glad we could help quickly, especially for your mom. Your appreciation means a lot to us!
Nick was on he way to our house when I had to cancel my appointment for service. Nick was very understanding and professional about it. While we didn't get to utilize him, I have no doubt he'd have been just as professional in his job.
Response from the owner:Thank you for your kind words. We appreciate your understanding and are glad to hear that Nick made a positive impression. If you ever need our services in the future, don't hesitate to reach out.
I couldn’t be happier with Thomas Hoffman. They are quick, courteous, and super knowledgeable as well as providing service at a good value. Most importantly to me, they have great integrity. I could not recommend them more highly!
Response from the owner:Thank you for your wonderful review, Josh and Nikki! We’re thrilled to hear that you had such a positive experience with our team. Providing quick, courteous, and knowledgeable service is our priority, and we're glad to know that our efforts resonate with our customers. Your recommendation means a lot to us!
Tom was a great service technician- arrived promptly on time - and fixed our issue within a few minutes!! Very nice guy too!
Response from the owner:Thank you for the wonderful feedback! We're glad to hear that Tom provided prompt and effective service. Our team strives to deliver a great experience, and it's fantastic to know that you were satisfied. If you need any assistance in the future, don't hesitate to reach out!
Very prompt and friendly service. Will definitely call them again.
Response from the owner:Thank you for the positive feedback! We're glad to hear that you were pleased with our prompt and friendly service. We look forward to assisting you again in the future!
Tom Hoffmann has been servicing both our residential and commercial equipment for several years. Tom is an experienced, innovative engineer, he can troubleshoot and solve any problem that arises. He has even personally serviced our furnace on a holiday! The trust, communication, knowledge, and relationship we have built is why we choose Tom Hoffmann every time, and highly recommend him to all our colleagues
Response from the owner:Thank you, Dan, for your wonderful review and for highlighting Tom's dedication and expertise; we're grateful for your trust and support over the years!
This was my 1st time using Thomas Hoffmann A/C & Heating, but it will probably not be my last.
After calling 📞 a few companies near my location & not getting a response, I decided to call Thomas Hoffman & someone immediately answered.
I needed someone to comeout & look at the installation of a new Smart Thermostat & let me know if it was installed properly & if not, install it correctly for me.
I was given a appointment on the day that I called for later that morning with a gentleman named Nick who supposedly was the guy that knew all about Thermostats & Wiring.
Nick arrived & honestly saved the day. He was very personable & professional & did a very thorough job while explaining everything thoroughly.
Nick is a very valuable asset to the Hoffman company & represents their company & himself with great pride.
I felt like I was in safe hands, & Nick performed quality work.
Thomas Hoffman is a company that U can trust & get ur money's worth if not more.
I look forward to doing more business with them in the future....
Response from the owner:Thank you, Harlan, for sharing your experience with us! We're glad to hear that Nick provided such excellent service and made you feel confident in your Smart Thermostat installation. Your trust means a lot to us, and we look forward to serving you again in the future!
Giovanni hooked up and maintained my humidifier. He was very professional and polite. Thank you....
Sondra B.
Response from the owner:Thank you, Sondra, for your kind words about Giovanni's professionalism and politeness; we appreciate your feedback!
Good
Response from the owner:Thank you, Albert, for your positive feedback; we appreciate your support!
My family was having issues with our old water heater leaking gas so we called Thomas Hoffmann’s company to help us. Giovanni and Ryan changed our water heater and replaced it with a new one fast and efficiently. I would recommend anyone looking for efficient and reliable work to give them a call. Thank you guys again!
Response from the owner:Thank you, Michael, for your kind words! We're glad Giovanni and Ryan could assist you with your water heater replacement efficiently. Your recommendation means a lot to us!
Great service. Responsive. Well trained technicians. Honest friendly and thorough. I highly recommend Tom Hoffmann and his team.
Response from the owner:Thank you for your kind words! We appreciate your recommendation and are delighted to hear about your positive experience with our team.
Giovanni and Ryan were great! Arrived on time, polite introductions, quality work and installed a new water heater in just a few hours. We have used them multiple times now and every time, they have been great!
Response from the owner:Thank you, Laura! We're so glad to hear that Giovanni and Ryan provided you with great service and quality work; we appreciate your continued trust in us!
Nick was a great technician to work with. He accurately assessed my problem and found a solution that will help keep my unit functioning without continued problems. Great and knowledgeable company.
Response from the owner:Thank you, Amond! We're glad to hear that Nick was able to provide you with a great solution and appreciate your kind words about our company.
Fast professional and curtious. I am so happy with the work and the energy
Response from the owner:Thank you, Richard! We're grateful for your kind words and glad to hear you appreciated the work and energy of our team.
Very quick to respond, and easy to work with. Replaced our furnace on a short timeline.
Response from the owner:Thank you, Brian, for your kind words! We're glad we could assist you quickly with your furnace replacement and make the process easy for you.
Super fast service and totally fixed the problem. Came out when no one self would.
Response from the owner:Thank you, Barbara, for your kind words and for recognizing our fast service; we're glad we could solve the problem when others couldn't.
Great service and price. Quick response
Response from the owner:Thank you, Bernard, for your kind words about our service and pricing; we appreciate your feedback and are glad you received a quick response!
The service man came out as requested. I called at night and he was here at 8:AM.
He figured out the problem and had it fixed within the hour.
Very courteous and efficient.
JGold
Response from the owner:Thank you, Joan, for your kind words. We're glad the technician was able to help you so quickly and efficiently. Your satisfaction means a lot to us!
Service was great
Response from the owner:Thank you, Chat! We're so glad to hear you enjoyed the service, and we appreciate your kind words.
Service was quick and professional, got our heat pump back up and working in a couple hours. Thank you!
Response from the owner:Thank you, Jake. We're glad to hear the service was quick and professional, and that your heat pump is up and running again!
Our furnace decided to stop working at 11pm on a Friday right before a bad winter storm. They took my call that night and had a tech (Duraid) out by 9am the next day and had us all fixed up within 15 minutes! Fantastic customer service. Thank you!!
Response from the owner:Thank you, Nicki! We appreciate your kind words and are glad Duraid could get your furnace up and running so quickly before the storm. Your satisfaction means a lot to us!
Thomas Hoffmann always does a great job in servicing our HVAC. Installed a new system last and it’s working great and very efficient. Nick goes above and beyond when servicing and answers all my questions. Highly recommend Thomas Hoffmann Air conditioning & Heating.
Response from the owner:Thank you, Nancy, for your kind words! We're glad to hear that you're satisfied with your new system and appreciate Nick's dedication to great service. Your recommendation means a lot to us!
They were professional and got my hot water back on. And I'm happy about that.
Response from the owner:Thank you, Pamela, for your kind words! We're glad our team was able to restore your hot water and meet your expectations.
Had a water pump leak and they were out the very next day to repair!
Response from the owner:Thank you, Andrew, for your kind words! We're glad we could quickly help with your water pump leak. Your satisfaction means a lot to us!
Create the Proper Conditions for a Diagnosis
Before you can identify the possible causes of your HVAC malfunction, make sure you create good conditions for testing it.
- First of all, close all your windows to prevent hot air from coming inside.
- Check the current room temperature and set your thermostat to a cooler value, it may simply not be set correctly.
- If you are using other air processing appliances like humidifiers or air purifiers, turn them off.
- Check the vents and make sure they are not obstructed.
Once you have created these conditions, it’s time to find the culprit through elimination. It’s possible that after taking these steps, you may notice that your system is actually working correctly. If not, here is a list of the most common causes for an HVAC unit that is running but not cooling. Get in touch with an HVAC technician who can help identify and resolve any issues with your air conditioner.
Refrigerant Leaks
Refrigerant is the substance used in air conditioning units and refrigerators to cool the air or fluid that circulates through them. If your HVAC system has refrigerant leaks, it will simply not be able to cool the air, but it will still circulate it. Some units can self-diagnose low refrigerant, but without such a feature, only an HVAC professional can measure the level of the refrigerant.
Clogged HVAC Interior
Air not cooling can be a sign of improper maintenance of the HVAC unit. Follow the manufacturer’s instructions for routine maintenance and clean the air filters, coil, condenser, evaporator, etc. Clear any debris or vegetation around the outdoor unit and make sure the unit is not flooded with water.
Insufficient Airflow
Another cause for the HVAC not cooling down your house is that the cool air never gets to the interior. Fortunately, this means that the unit itself works perfectly, but you need to investigate the airflow before the problem worsens. Check the cold air returns to see if there is any suction (try using a paper tissue to check the movement of the air). All the vents in your house should let the air flow properly.
Thermostat Malfunction
Your HVAC unit may be working perfectly, but the thermostat is having some sort of issue. Make sure it works properly by checking the display if it’s blank you might want to try replacing the batteries or calling an HVAC expert to check the wiring.
Electrical Malfunction
Most issues that HVAC repair teams deal with are caused by electrical malfunctions. If you notice that your HVAC unit has stopped cooling the air, check the electric panel to see if any of the breakers were tripped. They should be labeled for easy identification. Try flipping them in the off position and see if that solves your problem.
Frequently Asked Questions
Why is my air conditioner running but not cooling?
This could be due to a variety of issues such as low refrigerant levels, clogged filters, or electrical problems. It’s best to have a professional HVAC technician diagnose and resolve these issues, as they have the tools and expertise to handle refrigerants and electrical systems safely.
What does it mean if your air conditioner is running but not cooling?
Often, this indicates that something is preventing the system from functioning efficiently. Possible reasons include a malfunctioning thermostat, blocked vents, or internal obstructions. A professional can conduct a thorough check to identify and fix the underlying problem.
What to do if your air conditioner is running but not cooling?
It’s advisable to ensure that the thermostat is set correctly and that there are no obvious blockages affecting air flow. Beyond these basic checks, contacting a qualified HVAC professional is the safest way to handle issues like refrigerant leaks or system recalibration.
How can I fix my air conditioner that runs but doesn’t cool?
Handling HVAC issues involves dealing with complex components that might require handling hazardous materials or electrical systems. Therefore, while routine maintenance like cleaning accessible filters and ensuring clear surroundings can generally be done safely, any deeper issues should be addressed by professionals.
What are common reasons for an air conditioner to stop cooling but still run?
Common reasons can include issues with the thermostat settings, blockages in the air circulation paths, or mechanical failures within the unit. An HVAC technician can offer the best solutions after a professional assessment, ensuring that any repairs or adjustments are done safely and effectively.
If you notice that your air conditioner is running but not cooling your home, give our team a call today and we’ll get to the bottom of your issue!
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At Thomas Hoffmann Air Conditioning & Heating, we pride ourselves on being a locally owned and operated HVAC company. With more than 30 years of experience and a master technician and mechanical engineer as our owner, we can replace, repair, and maintain your business or home’s HVAC system.
