HVAC reviews in St. Louis, Missouri

Stephen, Ryan and Matt did a masterful job of removing and installing my new HVAC. They took their time, no shortcuts and did everything to code and more. The system is working perfectly and we expect it to continue to do so for years to come. Thanks SmartHouse!

Jarius did an amazing job fixing our air conditioner. He also went above and beyond to explain what he found and what is going on. I appreciated him taking the time to discuss everything and made me feel more knowledgeable about my own a/c unit. He took his time, was professional and personable and did a great job. Would definitely recommend!!

Had to replace indoor and outdoor AC units. Great team all around, I interacted with multiple office workers, and three contractors, they were all fantastic! Ryan was efficient diagnosing my issues and a knowledgeable journeyman. Jay his apprentice got there early and was very pleasant to work with! The two of them finished the installation quite quickly and cleanly, the new units are working great and more efficient than my previous ones. The owner of the company, Mark, delivered the units himself, since their supplier couldn’t ship them within our extremely fast timeline. I called on a Sunday and was warned about the emergency surcharge, so I only officially asked for their services on Monday morning, and Tuesday at 3pm I already had my new unit installed, during a heat wave, and a very busy week for the company (when I went into their office the phones were ringing nonstop!).

Had an issue and called the after hours service and received a call back within a timely manner. Jay (tech) came out after he was supposed to be done for the night and was incredibly helpful in resolving the issue. He was quick and efficient and was explaining things that we can do to prevent similar issues going forward. Jay was fantastic and it’s clear this company puts a lot of focus on providing high quality customer service.

Decided to be proactive and replace my 24 year old central air conditioner before it quit during a heat wave. SmartHouse sent out Specialist Tim the same day I called. He answered all my questions, took measurements, fully explained my options and gave me quotes on 2 replacement models. We accepted one bid and were able to schedule the install for the very next day. Because our appointment filled the last opening in their installation schedule, Tim gave us a sizable discount. Ryan and his install crew arrived on time the next day, explained everything, completed the install and gave me another discount for paying with a check. It was a very easy, quick, and professional experience. Thanks to SmartHouse I now have piece of mind for many cooling seasons to come.

All stuffs at Smart House are very nice!!!
I had a good experience with my Old AC/heating system which was installed by Smart House. When my old AC did not work on May, 2025, I confidently chosen Smart House.
And after the installation, I conformed that I made a good decision.
The installer did a wonderful job, a beautiful job, an excellent job!!!

Jing S.

From the initial quote to the install and even some diagnostics afterwards, every employee of this company was knowledgeable professional and kind. I don't doubt you could find a company to do work for you for cheaper but in this case I truly got what I paid for, their attention to detail was stellar. My new system is is quiet and comfortable.

Solid communication, great technical knowledge when it when it comes to heat pumps, and very professional staff from the office to the field techs. Ryan, George, and Marcus were a breath of fresh air to work with!

Kaylee and Bob addressed my issues timely and professionally. Within 24 hours, Bob was at my house fixing my problem. I always appreciate the good work SmartHouse performs. Thank you!

We used Smarthouse to install a dual-fuel system (new heat pump and 97% efficiency gas furnace) to replace our 30-year old 6 SEER AC and 80% furnace. We probably could have eked out another few years with this system, but the tax credit is expiring at the end of the year, and I didn't want the system to break on the hottest/coldest days of the year, as they like to do.

I went with Smarthouse because the owner Marc and sales manager Tim were both very patient with all my questions (this was my first HVAC replacement), and their pricing was more reasonable than another company, and with better equipment than the two that quoted lower. Several companies were not really interested in quoting or installing heat pumps, and didn't bother to tell us that before coming out to quote a traditional AC & furnace.

The installation was completed in 1 day (8 a.m. till 4ish) and the installation team was very considerate of leaving the house clean even though I'm sure they had a ton of work to do to bring our system up-to-date. The system works great so far (we still need cooling even in mid-October now!). I'm looking forward to seeing how the heat pump does over 30 degrees, and the furnace at lower temps.

There was possibly a minor issue that made an occasional whistling sound, and they sent out a tech the next day after I reported it to troubleshoot. He wasn't able to recreate the sound and possibly had fixed it by smoothing down tape, but with their great warranty, they'll come back out if it does happen again.

I was also impressed by the techs taking the time to explain things as well, everything from the thermostat after installation to talking through the whistling issue with me.

I'm happy with Smarthouse and I'm glad I went with them.

I had paper wasps set up a nest right behind the exhaust vent cover for my basement furnace. I called my Pest Control company and had them render the nest and wasps defunct. Then I called my regular HVAC provider, requesting they remove the now dead/inactive nest and any dead wasps, then scope the line to check for any potential debris or other obstructions, to be safe. My regular HVAC provider declined the job, stating they "don't do wasps" and "don't have a scope long enough." (Whaaat??) I even offered to show them the Pest Control invoice, but no. Just nope. They refused. Enter SmartHouse Heating and Cooling. The office worker who took my call was kind, mature, and knowledgeable. She knew exactly what I was talking about and was confident that not only had SmartHouse dealt with similar situations before, they could absolutely help with my situation. They offered to send out a tech **the next day.** Amazing. Today, I was blessed with Zach S., my assigned tech. He called to let me know he had availability earlier than scheduled if I wanted it. I did. He showed up within 20 minutes and immediately got to work. He quickly removed the dead wasp nest and dead wasps present at the entry of the exhaust vent. He then expertly scoped the exhaust pipe down to the first bend, encountering a few more stray dead wasps. He was able to remove these using the scope and a shop vac. He also found a bend in the PVC where the other HVAC company had never glued it. He was able to use this to his advantage to further verify with the shop vac that the vent was clear and unobstructed. He then glued the PVC together in the location in question and replaced the exhaust vent cover when he was done. He was super professional, knowledgeable, kind, respectful and friendly. I could not be more happy and am able to rest easy knowing that my furnace is safe to turn on in the Fall, and everything will be in working order. I will not hesitate to hire SmartHouse again for future jobs, and recommend them on the strongest possible terms to anyone else looking for superior service. Thank you so much. Zach is an absolute gem, and I really appreciate you all. 🙏💜👌🔥

Jay came to my home today to fix my furnace and he did an amazing job. He was very knowledgeable and worked extremely hard to get the job done. Was very well mannered and polite and I am very grateful he was chosen to come to my home. He did such a wonderful job, Thank you Jay for all your hard work. Truly a professional. Thank you very much!

I've used Academy for my air conditioner & heater install. They have also done plumbing work & all have been exceptional. They explain details of what is wrong & what it will take to fix the issue. Today, I had Connor Gray & he was GREAT! Very nice, polite & of course, explained everything in a way I could understand. Highly recommend.

Our midcentury modern house was a quite a beast but SmartHouse helped us every step of the way with an entirely new system. Our home has been so cozy during the storm! The entire crew and was fantastic to work with. Marc especially went above and beyond when our system needed a tweak. Will always go back to SmartHouse and will recommend to others without reservation!

Had AC issues in a surprise heat wave. Called and they had a technician out the next day to help diagnose the problem and attempt to resolve the problem. Sadly for me it wasn't a simple fix, but after the good experience went ahead and used them again for the installation to replace my AC and furnace. A few days later and the technicians arrived early in the scheduled window and went right to work. Interactions over all were smooth and painless and in the end I'm happy with their work.

Austin and Nick were great at doing our biannual service this spring. Very friendly and speedy. They liked my Paramore t-shirt. Highly recommend.

St. Louis Heating and Cooling had been great to us. They walked us through the process of replacing our HVAC system when it broke down, providing transparent estimates and honest answers. They’re always quick to send someone when we have questions or issues. We recommend to anyone who asks!

Can't say enough great things about this company. From Austin, the wonderful, knowledgeable technician, to Mandy, the friendly, communicative operations manager and the TWO amazing Kevin's that knocked out our full HVAC install in one day with a smile. Absolutely recommend.

service technician Austin aways does a good job!

I called STL Heating and AC on Sunday at 3 pm. because our unit wasn't cooling.Mandy answered the phone and said that they could send a tech out. She asked me about ice . We went outside and the entire copper line was solid ice. I called her back. She said we'd have to wait until the next morning since the ice needed to melt. She told me to turn the thermostat off but run the fan. The next day Austin came out to diagnose the problem but everything checked out ok. After much detective work, he found that the motherboard was corroded. Many ordered the part the same day, gave me and estimate for part + expedited shipping+ labor. The part arrived 2 days later and Many had someone there the same day. Kevin was there within 30 minutes and installed it. I couldn't have been happier with the attention and service we received. I highly recommend STL Heating and AC. I will definitely use them again.
Mandy is a star. She goes above and beyond. The techs are knowledgeable and Austin was persistent in locating the problem.
Dorothy P.

Austin with St. Louis Heating and Air Conditioning was amazing. He diagnosed my A/C issue very quickly and the part arrived much sooner than expected, and as soon as it arrived he was right back to my house within 10 minutes to get it fixed quickly. He was also very kind and informative along the way.

I highly recommend this company for any and all Heating and Air needs.