As St. Louis residents, we rely heavily on our air conditioning systems to keep us cool and comfortable during the sweltering summer months.
So when your AC starts blowing hot air instead of the refreshing coolness you expect, it can be frustrating and concerning. At Thomas Hoffmann Air Conditioning & Heating, we understand how disruptive this issue can be. Let’s explore why your AC might blow hot air and what you can do about it.
Speedy response and service. Knowledgeable professional. Kind, courteous, friendly but professional.
Response from the owner:Thanks for the great review! We appreciate your business and look forward to working with you in the future.
Super Helpful and Honest Service
I called this company earlier today because I was having a bunch of issues with my HVAC system. They were incredibly friendly and walked me through troubleshooting step by step over the phone. They didn’t even charge me for the call. Thanks to their honest advice, I was able to get things running smoothly again. Really grateful for their help and would definitely recommend them if you want straightforward and trustworthy service. Five stars all the way!
Response from the owner:Thank you so much for the glowing review, Hector! We appreciate your business and look forward to working with you in the future.
Giovanni the service technician was the best! Very knowledgeable, efficient and did a professional job replacing my hot water heater. I would highly recommend them to anyone in need of plumbing/ HVAC work first rate customer service at a very competitive price!
Response from the owner:Thank you, Mr, for your fantastic review! We're glad to hear Giovanni provided you with excellent service and professionalism. Your recommendation means a lot to us!
Nick did not set current time. — Monday Hoffmans Zach came to fix correct time. We DID NOT want a timed thermostat — we prefer to set temperatures manually
Response from the owner:Thank you, Pat, for your kind words about Giovanni; we appreciate your feedback and are glad to hear that he made a positive impression.
Clear communication about arrival, service and costs.
Response from the owner:Thank you, Margaret, for your kind words! We appreciate your feedback on our clear communication and are glad you had a positive experience.
Excellent experience.
Response from the owner:Thank you, Laura, for your 5-star review! We appreciate your support.
Fast, friendly, professional service.
Response from the owner:Thank you, Hank, for your wonderful feedback; we're glad you enjoyed the fast, friendly, and professional service, and we'll be sure to keep up the great work!
I will highly recommend this business for your air and heater repair. Prompt, knowledgeable and courteous service.
Response from the owner:Thank you, Judy, for your kind words and recommendation! We're glad to hear you were pleased with our prompt and courteous service.
Thomas Hoffman was very responsive to our after hours inquiry, even walked us through some trouble shooting over the phone. We provided pictures of the unit and they were able to quickly buy, schedule and install the part to keep our family warm!
Response from the owner:Thank you, Ali! We're glad to hear that Thomas was responsive and helpful in getting everything sorted out for you and your family. Your feedback means a lot to us!
Nick came by, identified the problem quickly and had it fixed. Great service!
Response from the owner:Thank you, Ted! We're glad to hear that Nick provided you with quick and effective service. Your feedback is greatly appreciated!
Zach was very professional and thorough. He was nice and did a great job!
Response from the owner:We are happy to hear you had a great experience with our company. Thank you for your kind words, Mike!
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.
Ryan Taylor with Thomas Hoffman did an outstanding job in servicing our unit & explaining everything to me, especially how our humidifier worked, since we were new home owners & had not had one before. Thank you!
Response from the owner:Thank you! We're glad to hear that Ryan and Thomas provided you with excellent service and helped you understand your new humidifier. We appreciate your feedback!
Polite and very efficient.
Response from the owner:Thank you for the 4-star rating, Debra!
Great service and arrived on time when promised.
Response from the owner:Thank you Wray, for your kind words! We're glad to hear you had a great experience and that everything was on time.
Ryan was knowledgeable and figured out why our furnace wasn’t working and repaired the problem
Response from the owner:So happy to hear you had a good experience with the team here at Thomas Hoffmann, Jo! Thank you for your support.
Service was great on time very efficient explained what he was doing changed filter disposed of old filter ! Nice young man 👍
Response from the owner:Thank you, marianne, for your fantastic 5-star rating; we appreciate your support!
Wonderful work. Great communication and always a happy positive technician. Answered all of my questions with sincerity and patience.
Response from the owner:Thank you for the kind words, Bob. We truly appreciate your business!
As always, the Hoffmann technician Zach was polite, professional, and efficient. Pricing is reasonable and even more importantly, they are dependable. I will continue to use Thomas Hoffman A/C and Heating.
Response from the owner:Thank you, Mark, for your kind words about our technician and for your continued trust in Thomas Hoffman A/C and Heating; we truly appreciate your support!
Hoffman is great! Very professional and thorough.
Response from the owner:Thank you, Brandon! We appreciate your kind words and are glad to hear about your positive experience with Hoffmann’s professionalism and thoroughness.
Giovanni was great today! Thanks for everything.
Response from the owner:Thank you, James! We're glad you had a great experience, and we'll be sure to pass along your kind words to Giovanni.
The technician is always on time and very thorough.
Response from the owner:Thank you, Catherine, for your kind words about our technician's punctuality and thoroughness; we appreciate your feedback!
Our service technician arrived right on time and was professional, friendly, efficient and courteous. We couldn’t ask for more.
Response from the owner:Thank you for sharing your positive experience with our service technician! We appreciate your kind words and are glad to hear that you were satisfied with the service provided.
Ryan was here on time. Thanks for getting here early, as I requested. Very friendly too. It was my annual checkup and all good!
Response from the owner:Thank you so much for the great review, Kay. We truly appreciate your business!
I'm a new customer and had my first appointment for furnace check.My tech was Zack and what a professional. He explained how he checked system and answered all my questions. This was a very good experience
Response from the owner:Thank you, Patricia, for your kind words! We're glad to hear that Zack provided you with a professional and informative experience during your furnace check. Your satisfaction means a lot to us!
Thomas Hoffman is a wonderful company to work with. Techs are knowledgeable, personable & efficient.
Response from the owner:Thank you, Christine, for your kind words about our team; we appreciate your feedback and are glad to hear you had a positive experience!
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!!!
The Thomas Hoffmann team did a great job taking care of our semi annual HVAC maintenance. They not only worked with us to schedule the visit, but also did an excellent job sending us reminders on when they would be out.
Response from the owner:Thank you so much for the great review, Bob! We appreciate your support and are happy to hear you had a great experience!
Nick was excellent. Super profession, quick, and up front with the pricing (which was fair). Hopefully we don't need to call anyone to fix our AC again, but if we do - I'm calling Nick!
Response from the owner:Thank you, Layton, for your amazing review! We really appreciate your support and hope to be your first call for any future repairs!
Same day service. Technician arrived as scheduled. Replaced capacitor quickly. Friendly technician. Repair cost $429 seemed high for inexpensive part and 20 minutes labor.
Response from the owner:Thank you, Tom, for your feedback! We're glad to hear the technician was prompt and friendly, though we understand your concerns about the repair cost. We appreciate your insights and hope to serve you again in the future.
Excellent.
Response from the owner:Thank you so much, Al, for your excellent review; we truly appreciate your support and are glad to hear you had a great experience!
Thank u
Response from the owner:Thank you, Connie, we appreciate your feedback and are glad to hear from you!
Courteous friendly and efficient! What else could you want!
Response from the owner:Thank you, Bob! We're glad you found our service courteous, friendly, and efficient – that's exactly what we strive for!
Thomas Hoffmann is the most professional and courteous of all the HVAC companies in St. Louis. It has kept my HVAC systems in good working order through the hottest and coldest days for many years.
Response from the owner:Thank you, Jonathan, for your kind words about our professionalism and courtesy; we truly appreciate your support!
Quick response time and great to deal with!
Response from the owner:Thank you, Pat! We appreciate your kind words and are glad to hear you had a positive experience with our team.
I notified two companies at the same time regarding a malfunctioning AC unit and Wow! Super fast response from Hoffmann on a weekend no less, to fix our AC unit. Hoffmann’s tech responded to my call immediately and fixed our AC before Galmiche has even responded. Used to be a Galmiche customer, but will use Thomas Hoffmann from here on out!
Response from the owner:Thank you, Darlene, for your fantastic feedback! We're glad to hear that our team was able to respond quickly and resolve your AC issue. We appreciate your trust in us moving forward!
Ryan did a great job with my AC reinstall. Very knowledgeable company with Tom Hoffmann providing the engineering expertise.
Response from the owner:Thank you, Steve! We're glad to hear that Ryan did a great job on your AC reinstall, and we appreciate the shoutout to Tom's expertise. Your satisfaction means a lot to us!
These guy's are amazing same day service very well priced for the knowledge they have ask before doing anything to confirm they're my new go to
Response from the owner:Thank you, Cory! We're glad you found our service amazing and appreciate your kind words about our pricing and knowledge. We're here for you anytime!
They came very fast to fix our AC and service was very good
Response from the owner:Thank you, Maria, for your kind words about our service; we're glad to hear you had a great experience!
My ac compressor was replaced. They always do a good job and they are always available when you need them.I think the price was a little too high since they only had to change the compressor in my unit. The compressor was under the warranty. Other than that Im very satisfied with the job the technician did.
Response from the owner:Thank you, Carlos, for your feedback and for recognizing the hard work of our technician; we appreciate your satisfaction with the job done and will take your pricing comments into consideration.
I was very pleased with your service. Prompt response would was most appreciated. The technician was very knowledgeable and prepared for the work. Also he was very personable and professional.
Response from the owner:Thank you, Richard, for your kind words; we appreciate your recognition of our technician's knowledge and professionalism, and we're glad you had a positive experience with our service.
Nick zeroed right in on the problem with a slight leak and quickly provided a solution.
Response from the owner:Thanks, George, for your kind words! We're glad Nick could quickly address the issue for you.
Top Reasons Your AC May Be Blowing Hot Air:
- Thermostat Issues
- Dirty Air Filter
- Low Refrigerant Levels
- Frozen Evaporator Coil
- Compressor Problems
- Outdoor Unit Issues
- Leaky or Damaged Ductwork
- Incorrectly Sized AC Unit
Let’s dive deeper into each of these issues:
Thermostat Issues
Before diving into more complex problems, always start with the simplest explanation. Check your thermostat to ensure it’s set to “cool” mode, and the temperature is lower than the current room temperature. Sometimes, the issue is as simple as an accidental switch to “heat” mode or a thermostat that needs new batteries.
Dirty Air Filter
A clogged air filter is one of the most common culprits behind an AC blowing hot air. When your filter is dirty, it restricts airflow, causing your system to work harder and potentially overheat. This can lead to warm air coming from your vents. We recommend checking and changing your air filter every 1-3 months, depending on usage and household factors like pets or allergies.
Low Refrigerant Levels
Refrigerant is the lifeblood of your AC system, responsible for absorbing heat from your home’s air. If your system is low on refrigerant, often due to a leak, it can’t effectively cool the air. This results in warm air blowing from your vents. If you suspect a refrigerant issue, contacting a professional HVAC technician is crucial, as handling refrigerant requires specialized training and equipment.
Signs of Low Refrigerant:
- Warm air from vents
- Hissing or bubbling sounds from the AC unit
- Ice formation on refrigerant lines or evaporator coil
- Higher than average energy bills
Frozen Evaporator Coil
Ironically, a frozen evaporator coil can cause your AC to blow hot air. This can happen due to restricted airflow (often from a dirty filter) or low refrigerant levels. When the coil freezes, it can’t effectively absorb heat from your home’s air. If you notice ice on your outdoor unit or indoor air handler, turn off your system and call for professional service.
Compressor Problems
The compressor is the heart of your AC system and is responsible for pressurizing and circulating the refrigerant. If it’s not working correctly, your system won’t be able to cool the air. Compressor issues can range from electrical problems to mechanical failures and typically require professional diagnosis and repair.
Outdoor Unit Issues
Your AC system consists of both indoor and outdoor components. If the outdoor unit is dirty, blocked by debris, or not receiving power, it can’t effectively release the heat absorbed from your home. This results in the system recirculating warm air. Ensure your outdoor unit has clear space around it and is free from leaves, grass clippings, and other debris.
Leaky or Damaged Ductwork
Sometimes, the problem isn’t with your AC unit but the ductwork that distributes the air. Leaks or damage in your ducts can allow hot attic air to mix with the cooled air, resulting in warm air from your vents. Professional duct inspection and sealing may be necessary to resolve this issue.
Incorrectly Sized AC Unit
If your AC system is too small for your home, it may struggle to cool the air effectively, especially on the hottest days. Conversely, an oversized unit might cool your home too quickly, leading to short cycling and poor humidity control. Both scenarios can result in inconsistent cooling and potentially warm air from your vents.
What Should You Do?
If your AC is blowing hot air, here are some steps you can take:
- Check your thermostat settings and batteries.
- Inspect and replace your air filter if it’s dirty.
- Look for signs of freezing on your indoor or outdoor unit.
- Ensure your outdoor unit is clean and unobstructed.
- If these simple checks don’t resolve the issue, it’s time to call in the professionals.
Benefits of Professional AC Maintenance:
- Improved energy efficiency
- Extended system lifespan
- Reduced risk of unexpected breakdowns
- Better indoor air quality
- Consistent cooling performance
At Thomas Hoffmann Air Conditioning & Heating, we have the expertise to diagnose and resolve various AC issues. Our team of certified technicians can quickly identify the root cause of your AC blowing hot air and provide practical solutions to get your system back to peak performance.
Remember, regular maintenance is vital to preventing many of these issues. Schedule annual tune-ups with our team to keep your AC system running efficiently and extend its lifespan.
Contact Us Today
Don’t suffer through the St. Louis heat with a malfunctioning AC. If your system is blowing hot air or experiencing other cooling issues, contact Thomas Hoffmann Air Conditioning & Heating today. We’re here to ensure your home stays relaxed and comfortable all summer.
