Serving Belleville, Granite City, Edwardsville, O'Fallon, Collinsville, East St. Louis, Fairview Heights, Highland, Troy, Glen Carbon, Madison County, Columbia, Cahokia, Wood River, Mascoutah, Maryville, Caseyville, Clinton County, Millstadt, Lebanon, Breese, Centreville, Freeburg, Scott AFB, Trenton, Smithton, New Baden, Dupo, St. Clair County and beyond Furnace Repair Company Millstadt

Great job fixing my furnace Apr 14, 2026

Great job fixing my furnace. Called it in at 8:00 a.m. and it was fixed by 1 p.m. Technician was very prompt, professional, and skilled.

Bruce Card

Jim did a great job Mar 4, 2026

Jim did a great job getting our old furnace up and running by analyzing and replacing a pressure switch. He is very personable and gave us a couple of recommendations that will ensure the safe and efficient operation of our HVAC system. He and Bel-O were very professional and I highly recommend them both.

Tom Robichau

Very happy with the service Feb 23, 2026

Very happy with the service Anthony provided. He was quick to diagnose and fix our furnace. We appreciate the speedy response to get our house warm again!

josh Siegfried

Reassurance My Furnace Is Maintained Jan 29, 2026

Glad to have reassurance that my furnace is maintained and I won’t have any problems.

Carol Bode

Great Service! Jan 27, 2026

I had the unfortunate situation of my furnace quitting on me. To make matters more serious, it happened right before the first real winter storm to hit in the Midwest (January 2026). With the help of A.I., I singled out Bel-O as the best company to call for this issue. I made a call, and between 2 visits my heat in my home was restored. My inducer was the problem, so they ordered a new one and installed the new inducer in less than 30 minutes. Both servicemen that visited my home were friendly and professional and even checked the other components of my furnace to make sure those parts were working well as too. My service fee was $100, which I won't cry about at all for facing not having heat right as a severe winter storm is about to start. Since the new inducer was installed, I noticed that my furnace is a lot quieter than before. I wonder if the excess rumbling was a sign the inducer was about to quit working? If I hear it again I'm definitely calling them. So far, no issues and my home is warm again! I also like that there are payment options with this company. They accept most debit and credit cards with a Visa or Mastercard logo. Cash and check are accepted and payment is due at the moment service is completed. If you cannot for some reason pay at that time, they can help you to set up payment arrangements to cover the cost. You can also directly pay via their website. I had a hiccup paying them at the moment service was done because my bank thought it was fraud because of the amount ($1728), so I used their website to send in my payment without fuss! A minute later my receipt from Bel-O came in my e-mail confirming they received the payment and that was it! I've already told a few people who own their homes about Bel-O as a good HVAC service is seriously needed when you have heating or cooling issues. Needless to say, got Bel-O programmed in my phone for this summer coming up! Thanks again y'all! Great service!!

Daryle Hunter

Highly recommend Bel-O and Jim Dec 22, 2025

Jim came to our house to help identify an issue in our furnace. He was very insightful as he explained the issue so that we could understand it. He gave us some future maintenance tips as well! Highly recommend Bel-O and Jim for their service, price, and professionalism.

Emma DeMonica

Anthony was fantastic. Dec 3, 2025

Anthony was fantastic. From the moment he knocked on the door, he was nothing but kind and professional. He came in, worked on our furnace, gave me a very informative explanation about what was going on with our unit. Payment was requested and handled in a very professional manner. It was an excellent experience as always.

Kitty Wusstig

He was very polite. Nov 10, 2025

Anthony arrived at the scheduled time, and completed a thorough inspection of the furnace and humidifier. He cleaned up the area, and he was very polite.

Paul Kettwich

Jim’s Attention to Detail and Thoroughness Stood Out Sep 23, 2025

Service provided: Gas-fireplace cleaning, tuning and maintenance. I had an excellent experience with Bel-O Heating, Cooling and Plumbing thanks to technician Jim Gauch. From the moment he arrived, Jim was professional, courteous, and extremely knowledgeable. He took the time to carefully explain what needed to be done, answered all my questions, and made sure I fully understood the work being performed. Jim’s attention to detail and thoroughness really stood out—he didn’t just address the immediate issue, but also checked the system to make sure everything was running efficiently and safely. His expertise gave me complete confidence in the service I was receiving. Bel-O is lucky to have a technician like Jim representing their company. I truly appreciate the outstanding service, and I wouldn’t hesitate to recommend both Jim and Bel-O to anyone needing reliable heating, cooling, or plumbing work.

Vanessa Taylor

Replaced the Gas Valve Quickly Feb 25, 2025

Jim replaced the gas valve on my furnace quickly. He double-checked all connections and made sure everything worked properly.

stephen dirnbeck

Furnace problem fixed to my satisfaction Feb 13, 2025

The furnace problem was fixed to my great satisfaction. Anthony was very professional and personable.

Kenneth Bunch

Awesome Saturday Service Dec 21, 2024

Tony, for being a Saturday, was here within 2 hours, which was awesome. He did thorough analysis as to why we were getting a limit check error on our new Carrier furnace. He made adjustments based on conversations with Carrier tech support. Tony explained exactly what he did. He was very courteous and professional.

Eric Doyle

Excellent Service Dec 18, 2024

Excellent service. Performed furnace checks for operational performance. Alex was professional in all respects and answered and explained technical details for all my questions.

Warren Bandy

Personable and Professional Service Dec 10, 2024

BEL-O has serviced my furnace many times over the past years and always done a great job. This was the first time Kyle has been here, and I found him to be personable, professional, efficient, and centered on the task at hand. I was and am very pleased with the service.

Sally Schuster

Great Job on Furnace Repair Dec 1, 2024

Brian did a great job putting my furnace back together after a small furnace fire.

daniel appel

Great service from Bel-O Nov 29, 2024

We always appreciate the great service from Bel-O. Today, Brian came out and got our furnace back up and running. He was friendly, thorough, and did a great job explaining the issue and what he did to fix it. Thank you!

Eileen B

Efficiently serviced our furnace Nov 27, 2024

Very easy to schedule service. Alex arrived on time and efficiently serviced our furnace. He explained everything he did and left the area clean. Very happy to have him provide service.

Dan May

Alex was very considerate Nov 20, 2024

Alex came to my home to do the annual maintenance on my furnace. He was professional and explanatory, but more importantly, he was very considerate. Bel-O can be proud of how he represents their company.

Georgann Johnson

Very Friendly and Respectful! Nov 19, 2024

Our furnace stopped blowing heat. I was able to call Monday and get someone out here to look at it the next day. Loran was very friendly and respectful!

Olivia Barker

What a fantastic experience! Sep 6, 2024

What a fantastic experience I just had with our technician JIM that came out to service our furnace for the winter. So knowledgeable, so polite... answered all my questions... thank you!

Donna Sims

Very Satisfied Customers Mar 28, 2024

This was our first time using Bel-O, and we were very satisfied customers. Loran, our tech, was professional and did an excellent job getting our furnace and hot water heater operational. Plus, a nice guy.

Lyn Huxford

Issue Resolved Same Day Mar 19, 2024

Furnace issue resolved same day I called for appointment. Appreciated the timely and professional response!

Charles McKee

Outstanding! Feb 27, 2024

Caleb is very professional, knowledgeable and a nice gentleman. He serviced my furnace, explained what he did, and left me with nothing to clean up. Outstanding!

Linda Hearn

Nice job. Feb 5, 2024

Nice job. I needed a coupling on the furnace exhaust stack located in my attic resealed. The PVC was in a fairly difficult location. The joint was sealed, my ceiling wasn't damaged, and it was done quickly and neatly at a price I expected.

Paul LoBue

Great Job 👏🏽! Jan 23, 2024

Repairs to the furnace venting system. Great job 👏🏽! Thank you, Anthony.

Jeanette Hendrix

Bel-O Saved Me! Jan 23, 2024

Last week, when temperatures were subzero, my furnace stopped running. I was at a loss because it was a last-minute type of situation. I called Bel-O after looking over their years of service and the reviews that were left. The person on the phone was very professional and calming. She said she could get a tech out that very day which was a total relief. The tech was Caleb Davinroy, who came out during the allotted time slot. He was very friendly, very professional, and knew his craft. He diagnosed the problem, explained it to me thoroughly and understandably, did not have the part needed for a permanent fix on that day, but temporarily got the furnace back in running order to get me through the week as I was leaving for a five-day work trip and was very concerned about not having any heat in the house for the week. He said we could discuss the part/permanent fix upon my return. Sure enough, the furnace worked while I was gone, and kept the house, pipes, etc. from freezing during my absence. What a relief! He truly saved me! Bel-O followed up with a very kind and professional email & text to make sure I was ok and assured me that they were there if/when I needed them and detailed what was needed and the price for the part/repair. After this experience with them, I have 100% faith in their sincerity, professionalism/work ethic, and ability to take care of HVAC issues. Their tech, Davinroy, was EXCELLENT, and so was their customer service rep Brian Hendren. My sincere thanks to Bel-O for rescuing me at the last minute during the coldest week of the winter. I will forever be grateful and will continue to 'sing your praises'.

Robert Reeves

Furnace runs like new Jan 15, 2024

Brian is a true professional. He diagnosed my furnace problem quickly and accurately. Ordered the parts and also quickly delivered from Bel-O. Several components had to be moved to facilitate the removal and replacement. All of this was completed in just over an hour. Furnace runs like new.

Craig Sewell

Loran always explains everything. Oct 4, 2023

Furnace cleaning and tune-up, change pad of humidifier, and flush our tankless water heater. Loran always explains what he’s done - what we need to pay attention to, etc.

Mary Therese Hoffmann

Technician was courteous and thorough Jan 30, 2023

We had an odor coming from our furnace. The technician arrived on time and was courteous and thorough. He provided reasonable options for correction at a decent price.

Steven Frederickson

Solved the Furnace Problem Jan 27, 2023

The tech knew his business, solved the problem of the furnace not running, and fixed a short in the heat pump. It didn't take very long to get things running again. Service manager Erin was very helpful in providing me with a link to this survey. 5 stars out of 5.

John B