Replacing your air conditioning unit and your furnace at the same time might be expensive, but it can save money in the long run.
If you are planning to replace your air conditioner, you may want to seriously consider replacing the furnace too, and plan accordingly, as there are plenty of practical reasons to do it.
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!

Replacing Your Furnace at the Same Time as the Air Conditioning Unit
The main indicator you should use when deciding if you’ll replace the furnace or not is its age. The average lifespan of furnaces is often two times longer than the life of an air conditioning unit, so you might be tempted to postpone replacing the furnace if it’s not too old.
However, if you do replace your air conditioner, the best decision is to go with a furnace that contributes to the efficiency of the whole HVAC system.
What Exactly Does Each Component Do?
The furnace is what provides heat to your home. It communicates directly with the AC unit, which distributes the heated air through your home and cools it down during the hot season. It can work on gas, electricity or other types of fuel, but the distribution system is generally the same for all models, relying on the fan for airflow.
The air conditioner can be split or a packaged system. A split air conditioner has an indoor unit and an outdoor unit. The outdoor unit contains the compressor and the condenser coil, while the indoor unit ensures the airflow and it also distributes warm air from the furnace. In a packaged air conditioning system, there is no outdoor unit and all components are in the same place.
When to Replace Your Furnace and When to Keep It
In most cases, it’s a good idea to replace the furnace at the same time as the air conditioner.
The most common reasons are:
- The new air conditioning unit has increased efficiency, with SEER over 16. If your furnace is old (15 years old or more), it won’t contribute to the efficiency of the HVAC system, making the AC unit an impractical expense.
- The furnace is approaching the end of its lifespan and will need replacement soon.
- In terms of maintenance and repair, installing a new furnace is easier than keeping it.
When It’s Not Necessary to Replace the Furnace
If your furnace is less than 10 years old, it can often last until the next time you will need to replace the air conditioning unit. Usually, that happens in 10-15 years, and a furnace may last for 25 to 30 years.
In conclusion, replacing your furnace at the same time as the air conditioning system is often a better option, because you will get the most out of a matched pair. Speak to our HVAC experts today and see if that is the best option for you. Give us a call 24/7 at (314) 471-7625!
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