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Commercial HVAC

Reliable Heating & Cooling, Inc.

4.9(100 reviews) O'Fallon, MO

About Reliable Heating & Cooling, Inc.

A full-service HVAC company providing heating, cooling, air quality, and water heating system installation, repair, and maintenance for residential and commercial customers.

Services Offered

Furnace repairAC installationheating installationair conditioner serviceAC repairHVAC serviceprecision installationreplacementseasonal maintenanceair quality serviceswater heating servicesemergency service

Customer Reviews

Google
If you’re looking for a great and I mean great HVAC and Heating company you can’t go wrong with Reliable. I have been with them for over 12 years. They have replaced both my air conditioner and heating units quickly and efficiently. I won’t go to any other similar business. Reliable is always there when you need them 24 - 7 and if you have an issue, they listen and make it right. Management, Staff and Technicians are top notch. “Well Done Reliable”
Dennis
Google
I have been a customer of Reliable Heating and Cooling for 20+ years. This installation HAVC is my second one. Reliable Heating and Cooling served me at my former home and now my villa. The installers were great! I was concerned about my carpet getting soil due to the traffic. They put covering though out where they were working. I thank you Reliable Heating and Cooling for another job well done. Give my thanks to the three young men who were wonderful and you to Marty for the pre-planning we experienced prior to installation. May God continue to bless you and your business. Again, thank you for a job well done...
Serena Rowan
Google
I received a call from Liana asking when I would be available for a gas line install for the generator. She gave me a few options and clearly explained what would be done. The arrival window was small which isn't typical and I really liked that On the morning of the install it started with a quiet knock on the door. Brad arrived in the time window given and that knock alerted me but didn't wake anyone sleeping up. He introduced himself and gave an overview of what he was going to be doing. Very professional and personable. The work looks very good. Thank you
Daniel Rieman
Google
Derrick came out to inspect my furnace and I had a great experience. He was friendly and knowledgeable and helped educate me on items that can help prolong the life of my furnace. I will continue using this company for my service.
Kevin Jones
Google
I have use Reliable Heating & Cooling for over 30 years. The service has always been excellent. Marty has always made sure that things were professionally done. Thanks to Marty and staff for the great service. Also thanks Derrick for such an awesome job! Derrick is always courteous, professional and knowledgeable.
R Cotton
Google
Reliable has been my HVAC choice for over ten years. The company not only has expertise in HVAC, but also the brilliant light and bright character of commitment, honesty and compassion. Maintenance and repairs are a treated as a trinity of customer decision, timely repairs and fair, honest charges. I can put my faith in this company to do a job well done. Thank you Reliable.
Suzy Shepard
Google
Derek from Reliable heating and cooling came to our home today to do a furnace inspection on a planned maintenance program. He was on time, friendly, knowledgeable, thorough. He answered all questions I had. I was recommended to this company by my sister In 2022 when I needed a new furnace and air conditioner. I have been very happy with the company and their employees.
David Schmitt
Google
Marty and his team handled the replacement of an older-model (40+ years old) air conditioner condenser. Marty offered several estimate options over a price range for doing the job, all of which were competitively priced for the work to be done. Marty took time to answer my and my mom's questions about the job and options personally, from his own cell phone, after-hours. The estimate was detailed and informative. When it came time to do the work, Marty supervised the job himself, and his team was responsive, professional, and careful.
Maxwell Krem
Google
Reliable has always done great work for me. Very pleased as they are quick to respond and listen to the details of my issue. They used diagnostics with observable metrics to focus on the problem. The system was repaired and heating my home within 24 hours.
J Vogel
Google
We are very satisfied with the excellent job that Reliable staff, especially Liana and Brad, have done in installing our new Generac emergency power source. Both Liana and Brad have excellent communication skills, knowledge of this product and show respect for our family and home. Thank you. Simon Rosen
Simon Rosen
Google
Our air conditioner went out on a Sunday afternoon. Record high temps that day. I called to leave a message knowing it was after hours, but hoping someone might get my message early the next morning. I was very surprised to receive a call back that evening with a promise they would have someone at our house at 8:00 am the next morning. The service technician arrived on time. Very friendly and courteous. He had to to leave to go pick up a part with the promise he would be back. He had us back up and running later that same day. We were so grateful for the prompt service. Highly recommend this business. Thank You Derrick!
Debbie Loeffelman
Google
When our air conditioning went out over the weekend, I searched for a 24 hr service business. We are glad we called Reliable. They were quick to respond. Marty was professional and friendly. He had it fixed quickly, despite the rain. I feel the fees were reasonable considering it was the weekend. Reliable will be our “go-to” for any maintenance, repairs, and eventual replacement going forward.
Sandra Hoekstra
Google
I dealt with Liana regarding a very frustrating situation concerning the inspection of my gas line. Liana was friendly, pro-active, helpful, efficient. She’s also a really good coordinator. Thank you, Liana, for using your skills to wrap up my situation in no time!
Eve Cascella
Google
Highly recommend Reliable Heating and Cooling. Liana and Brad provided great customer service and work for helping to install the gas line for our standby generator.
David Ott
Google
I am so pleased with the new gas line that Reliable installed! Liana and Brad were both knowledgeable and efficient and so easy to work with! I would highly recommend Reliable
Nancy Freant
Google
Technician Derek came by with all the necessary tools to pinpoint the problem and then replace the failed compressor all within an hour! He also provided great insight on how to better maintain the AC unit going forward!
Johnny Wong
Google
We had an issue arise late Sunday night and we couldn't get ahold of anyone then came early Monday morning around 630-7 we were able to get ahold of an actual human being and she was able to get us an appt scheduled for later that day. Not only did the tech Derreck get there around 9 am he was super friendly super knowledgeable and only took about 30 mins to find and diagnose the problem. The only part was in Maryland heights so he went to his other 2 appts and went the extra mile to pick up the part. Then around 3 or so tech Marty came out and installed the blower motor checked everything and waited to make sure it was performing 100%. My wife and I are extremely happy with the service, professionalism, expertise, and friendliness that this company had given us we will definitely be using them from now on. Thank you for saving us from the heat!
Chris Hodge
Google
Derrick did a great job taking care of HVAC and installing new thermostat. Very professional, knowledgeable efficient and friendly. Thank you!
Karinn Granger
Google
I Contacted Reliable Heating and cooling company by phone this morning and their Technician Derrick showed up in less than one hour. I received very professional service. Mr. Derrick fixed the issue with my Air-conditioning and went further to ensure that even the furnace was in great working condition. I highly recommend Reliable Heating & cooling company. The customer Service associates who answered my telephone call is very professional and courteous.
george kungu
Google
Had an issue with the furnace short cycling I contacted Reliable Heating and Cooling, explained my issues and they said they could have someone out within the hour. Needless to say I was extremely pleased with their quick response time. Technician (Derrick Hodapp) showed up and I explained the issues to him and within 30 minutes or so he had corrected the problem and had the furnace running properly. Very happy and satisfied with their whole process. Would highly recommend Reliable, very polite, professional and quick to respond. Would definitely use them again for any future work if needed.
doug hawk
Google
Derrick was awesome. He came out Sat morning (with in 12 hours of us calling). Trouble shot our issues. Was straight with us and helped us understand how we could improve the AC unit. He didn’t try to pressure us into any “special” service. Went above and beyond by fixing several issues the last guy didn’t do correctly. Having had rental properties and multiple service calls on those properties at times, I’m used to dealing with the pressure sales and there was non of that. He showed me what was wrong, I validated it, and he fixed it. Excellent service and will use them again!
Chris Simms
Google
Our AC went out yesterday. I called first thing this morning and someone answered and got me scheduled. Absolutely amazing customer service. We will use them again for sure. Thank you so much for helping us today!
Jessica Maupin
Google
Reliable heating and cooling have been just that… Reliable! Dealing with Liana in the office was seamless and Brad did excellent work.
David Phillips
Google
We had an issue with our AC unit not cooling our house. Reliable sent out a service tech within hours of our call. Derrick came out and took care of our issue. He was nice, polite, and knowledgeable. Thank you Derrick for all your help.
Tim Dennigmann

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