Dealing with one hot room while the rest of your house stays cool? Contact Hoffmann Air Conditioning & Heating today to schedule an appointment.
Have you ever walked from your comfortable living room into a hot, stuffy bedroom, even though your AC is running? If one room in your St. Louis home consistently feels warmer than the others, you’re not alone. Uneven temperatures are one of the most common HVAC complaints we hear at Thomas Hoffmann Air Conditioning & Heating, and fortunately, there are effective solutions.
Love that it’s the same technician every time. Let’s me know what he found and any concerns he might have regarding our units. Great customer service.
Response from the owner:Thank you, Theresa! We're glad to hear you appreciate having the same technician and the communication about your units. Your feedback on our customer service means a lot to us!
From the phone to the completion of the job everyone is so polite and informative. I had Giovani as our representative and he was very informative and professional, and knew exactly what the problem was. Thanks so much.
Response from the owner:Thank you for the kind review, Frank! We appreciate you and your business.
Zach did an excellent job! Always courteous and friendly. We would highly recommend calling Thomas Hoffmann HVAC for any heating and cooling needs.
Response from the owner:Thank you, Allan! We're glad to hear that Zach provided excellent service and appreciate your recommendation for Thomas Hoffmann HVAC.
Was able to locate the problem right away and replace a switch and add Freon very nice job by this employee. I will recommend Thomas Hoffman for future references.
Response from the owner:Thank you, William! We're glad to hear that our team was able to quickly address the issue and that you had a positive experience with Thomas. Your recommendation means a lot to us!
I had Nick come out. He was awesome. Very knowledgeable, prompt and helpful. I will definitely recommend Thomas Hoffmann HVAC to others in need of HVAC support.
Response from the owner:Thank you, Jack! We're glad to hear that Nick provided you with excellent service. We appreciate your recommendation and look forward to assisting you and others in the future.
From our initial quote until the new furnace and AC were completed, everything was smooth and efficient. Zachary and Giovanni were excellent on-site, taking time to explain the installation as well as leaving the home clean. Thank you Thomas Hoffmann team
Response from the owner:Thank you! We're glad to hear that the installation process was smooth and efficient. Zachary and Giovanni will be pleased to know their efforts made a positive impact. We appreciate your kind words about the team!
Update 4/6/26: Zach Sperling is such a pleasant and knowledgeable technician that I recommend him highly. Thomas Heating has been a wonderful company to work with in my maintenance plan. If you are looking for a reputable company, look no more.
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.
work good but got at least 6 messages from them very annoying
Response from the owner:Thank you for your feedback, Harold. We appreciate your input and understand how too many messages can be frustrating. We'll work on improving that experience for you.
Nick was great! He came right out and was able to solve the problem fairly easily. He communicated well and helped us prevent a future problem as well.
Response from the owner:Thank you for the review, Philip! We are happy to hear you had a pleasant experience working with us.
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.
They have never failed to fix my hvac problems. These folks are top tier.
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!
Giovanni was very professional, helpful, patient and helped me figure out the issue, if it was covered under warranty, and next steps. Great overall experience and much appreciated.
Response from the owner:Thank you, Amy! We're glad to hear that Giovanni provided you with such professional and helpful service. Your appreciation means a lot to us!
Always professional and thorough whenever they service our home. We have used Thomas Hoffmann Air Conditioning & Heating multiple times since we moved into our home and will continue to use them in the future.
Response from the owner:Thank you for the thoughtful review, Joe. We appreciate you and your business!
0 stars if I could. Bought a faulty (not to mention overpriced) surface igniter, called back five minutes later after installing, of course they didn’t stand behind their part. Go to Grainger instead. Same (working) part, half the price.
Response from the owner:Hi there. I am unable to locate your customer profile. Please give our office a call at 314-471-7625 so we can get this figured out for you.
My furnace was not working. A very nice gentleman came out this morning and fixed the problem and now I have much needed heat. He was very professional and courteous. I will definitely be using them again when the need arises.
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!
I will always call Hoffmans for my air and heat needs. They were out to my daughters house that day and fixed it. It was right before the weekend storm with below zero temps the next day. They saved my daughter and grandbabies. I could never thank them more.
Response from the owner:We are so happy to hear that we could help! Thank you for the kind review.
Snow and drifting snow covered intake and out take vents causing the furnace emergency to shut off furnace. Cleaned off the driftibg/ snow off roof and vents furnace works perfect now. Thank you and great job Nick.
Response from the owner:Thanks for the great review, Scott! We appreciate your support.
5 stars! Nick was here to fix my heater within 2 hours of my call. He explained the problem to me thoroughly and got the job done quickly & professionally. Thank you so much!
Response from the owner:Thank you for the kind review, Jennifer! Glad we could help.
Extremely thorough and educational. They do a wonderful job of explaining everything and making sure I was comfortable knowing how the systems worked in my house!
Response from the owner:Thanks for the great review, Matthew! We appreciate your support.
I noticed a strange noise that I was concerned was linked to my furnace. I called Thomas Hoffman Heating & Cooling and Nick came right out. He was very thorough checking all components. Thankfully all checked out for us this visit. Definitely recommend Thomas Hoffman Heating & Cooling!
Response from the owner:Thank you so much for the kind review, Abby! We appreciate your business and look forward to servicing you in the future.
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!
Got a quote over the phone. Everything was explained thoroughly. Dakota, my technician arrived and on time, was very professional and knowledgeable. He didn’t try to upsell or change anything. He did a great job. We can already tell the difference since the ducts and vents were cleaned. Would recommend an use Hoffman again in the future.
Response from the owner:Happy to hear you had a pleasant experience using Thomas Hoffmann!
The technician, Ryan, was knowledgeable and helpful in identifying the issue with our mini split AC unit. They are the second company we called after issues with the first and will be using Hoffmann again.
Response from the owner:We are so happy to hear your experience with Thomas Hoffmann was pleasant. Thank you for your kind review, & we look forward to working with you in the future!
1. Poor Airflow and Duct Imbalances
🔧 The Problem:
Your central air system relies on ductwork to evenly distribute conditioned air. But sometimes, duct design, damage, or restrictions can reduce airflow to specific rooms, often those farthest from the furnace or air handler.
🛠️ Common Causes:
Undersized or kinked ducts
Leaks in flexible ducting
Closed or blocked vents
Disconnected or poorly insulated runs (common in attic systems)
✅ The Fix:
A professional airflow assessment can pinpoint imbalances. Our team uses tools like anemometers and thermal cameras to identify issues and recommend solutions like duct sealing, insulation, or rebalancing.
2. Room Location & Sun Exposure
☀️ The Problem:
South- and west-facing rooms in St. Louis homes often get the brunt of the afternoon sun, especially in the summer. These rooms can heat up rapidly, even when the AC functions perfectly.
🛠️ Solutions:
Add UV-blocking window films or thermal blinds
Improve insulation and attic ventilation
Consider zoning your HVAC system to give that room separate control
3. Dirty or Clogged Air Filters
😬 The Problem:
If your air filter is clogged with dust and debris, airflow throughout your system drops, but the effects are often felt most in rooms at the end of the duct line.
✅ The Fix:
Change your air filter every 1–3 months, especially during high-use seasons like summer and winter. Our maintenance plans include scheduled filter changes and system checks.
4. Inadequate Return Air Vents
🌬️ The Problem:
Air needs to return to your HVAC system to be cooled again. If a room lacks a return vent—or if it’s blocked—air can stagnate and stay warmer than the rest of the home.
🛠️ Solutions:
Unblock return vents from furniture or curtains
Add additional returns (an excellent upgrade for older homes)
Use transfer grilles or jumper ducts to allow better air circulation
5. Two-Story Home Challenges
🔥 The Problem:
Hot air rises. In multi-story homes, upper bedrooms often get hotter while the main level stays cooler, especially if the thermostat is downstairs.
✅ The Fix:
Zoned HVAC systems with multiple thermostats
Smart vents or damper systems to regulate airflow
Ceiling fans and attic fans to circulate air more effectively
6. Aging or Undersized HVAC Systems
⚠️ The Problem:
If your AC unit is nearing the end of its life or isn’t sized correctly for your home, it may not be powerful enough to cool every room evenly, especially during extreme Missouri heat.
💡 Signs Your System Might Be Undersized:
AC runs constantly, but never cools the whole home
Hot spots persist even after filter and duct checks
Energy bills are unusually high
🛠️ Solution:
Our team can perform a Manual J Load Calculation to assess whether your system is the right size and recommend energy-efficient options tailored to your square footage and insulation.
7. Thermostat Placement
📍 The Problem:
If your thermostat is in a cool, shaded hallway, it might think your home is at the desired temperature, even if another room is 5–10°F warmer.
✅ Fixes:
Move your thermostat to a more central location
Install a smart thermostat with remote sensors (we install Ecobee and Nest systems)
Upgrade to zoning for precise comfort control
Ready to Even Out the Comfort in Your Home?
Don’t settle for hot spots and cold zones. Whether you need airflow testing, ductwork fixes, zoning, or a system upgrade, our trusted local technicians can help.
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.
