Repair and maintenance it went very well

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There are 10 highly-rated local boiler repair pros.
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TRUSTED BY O FALLON, IL HOMEOWNERS
4.5
Average homeowner rating803
Verified boiler repairs reviews
Verified Reviews for Boiler Repair pros in O Fallon, IL
Last update on October 13, 2025
- John H.
- John H.
Repaired two garage doors and service them as welloverall I thought it went very well
- Gwynne S.
The service was fast. Arrived on time and work done was outstanding. Our A/C unit had to be removed to gain access, the repair was completed and the A/C unit was put back in place. All of the workers involved with the repair were wonderful. Nick was our initial contact with this company and...
- Elizabeth L.
Emailed Sunday afternoon and got call that same day setting up a 6:00 am Monday (next day) appointment. Paid in advance online. Simplest repair transaction ever -- punctual, prepared, fast, professional, and very experienced. Perfect!
- Natalie W.
The Service Manager, John, is very professional, welcoming, and very knowledgeable. I trust him with any auto repair. I will always go to Car Doc. The waiting room is clean and comfortable. John kept me up to date on all stages/phases of my repairs - there haven't been any surprises with Car...
- Donald D.
Excellent. Quick quality work at a reasonable price. If you need plaster repair I wouldn't call anyone else.
- Matthew S.
These guys are very professional and constantly keep you informed of the cost for the repair. I would highly recommend them.
- Kenneth B.
Outstanding service by J & J Masonry. Jim Moore responded promptly to an email request about whether they would come out to O'Fallon IL for chimney repair on a rental property. He set an appointment, gave a very reasonable estimate and since the weather at the time of estimate was bitter...
- Ben H.
I emailed Clay for a quote on a chimney repair/ adding a chimney cap as well as a cleaning on a chimney at another property. Clay showed up as promised to perform the inspection for the quote, and took digital photos of the damage he found. He quoted a price on all the repairs that was...
Find Boiler repair pros in O Fallon
Garrett Heating & Cooling
Garrett Heating & Cooling
In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.
"Within minutes of posting my information to replace our AC I received a call from Jeff and was scheduled for an estimate the next day. The quote was excellent and he was able to schedule the replacement within a 3 day window which was outstanding considering the heat index was over 100 degrees. He explained everything very thoroughly and got the job done quickly. Definitely recommend."
Donna F on August 2025
In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.
"Within minutes of posting my information to replace our AC I received a call from Jeff and was scheduled for an estimate the next day. The quote was excellent and he was able to schedule the replacement within a 3 day window which was outstanding considering the heat index was over 100 degrees. He explained everything very thoroughly and got the job done quickly. Definitely recommend."
Donna F on August 2025

KIRKWOOD PLUMBING INC
KIRKWOOD PLUMBING INC
Since 1985, Kirkwood Plumbing has been performing fast, affordable, and high-quality plumbing services to homes and businesses in St. Louis and beyond. Our licensed and certified plumbers believe that quality workmanship and clear, honest communication makes all the difference, which is why you can count on us to always deliver honest recommendations, unmatched service, and 5-star customer care. No job is too big or small for our skilled plumbers, so whether you need seamless installations, remodels, repairs, or replacements, our team can help. From designing and installing your dream kitchen to replacing an outdated water heater and everything in between, you can count on our plumbers to exceed your expectations at every turn.
"I cannot recommend Kirkwood Plumbing/Mr. Rooter anymore after my experience. I called because the copper pipe on my water heater (I believe the temperature and pressure valve) would leak when we took a shower. The plumber they sent was very nice and told me that he discovered the issue was a failed PRV. He said that when multiple faucets ran at the same time, the pressure was reduced and that meant the PRV failed. I even asked if this would fix the leaking copper pipe on the water heater and he said yes. He quoted me $785 to replace and although that seemed a bit high, I agreed. He left and got the part, came back and replaced it. Well, when he was done with that replacement he said he “looked closer at the water heater” and actually my expansion tank had ALSO failed and was mostly water when it should be air. Only he just looked and discovered this after doing $800 of work??? And oh the pipe between the water tank and expansion tank had been leaking at some point but was not now. He recommended a new expansion tank and replacing that pipe section. He quoted me an additional almost $700 to do that job!!! And told me that the leaking from the water heater would not be fixed until he also did this. He said he thought the PRV had failed causing the expansion tank to fail and he would need to go out to get a new expansion tank too. He apologized for not realizing that sooner he said. This is completely unacceptable. At this point I’m essentially held hostage by your company to complete the job as the already $785 would not have fixed the leak as told. I told the plumber it’s disappointing because if I knew it was a much bigger issue I would have likely gotten other quotes, and in addition, I don’t feel like I could really trust him or the company at this point. I agreed to do the expansion tank for an additional $271 and would wait for the pipe to be fixed since it was not currently leaking and only showed signs of leaking in the past. I will never again use this company and will make sure to spread my experience. While doing some jobs you may discover additional issues, this wasn’t the case here. All he had to do was test the expansion tank (which is apparently a common failure for temperature and pressure valve issues) BEFORE starting the job and give me a quote for the actual fix. Not do an expensive job saying it will fix the issue and then saying that it wouldn’t fix it after. He even said it was his mistake. Again, he was very polite, but it is completely unacceptable to essentially hold your customers hostage halfway through a job saying the first fix wouldn’t even fix the problem, after doing it. I’ve since learned that the expansion tank should have immediately been tested for this issue and that it was rather backward to check the PRV first, as the expansion tank is often the culprit in these cases and that considering he said that it was mostly water rather than air, it would have been easy to diagnose. As for the PRV, with the water off it maintained 60psi and dropped 10-20 points when two faucets were on, which I have since learned may also be normal operation and not needing replaced. I’m not sure if this is how all customers are treated or just women customers. My advice is do not use this company. They respond quickly but will gouge you and not provide upfront pricing. He could have saved himself two trips out (making this take much longer) as well as given me upfront pricing had he just “looked at the water heater closer” the first time- you know the apparatus I called them out for in the first place. Offering “upfront pricing” is clearly not something they do. I now feel like I paid $785 for a service I did not need when I really just needed a new expansion tank and could have paid for that/fixed that without replacing the PRV and checked to see if that fixed the problem. I even told him I did not have pressure issues. Beware for unneeded services at a high cost and not adequately diagnosing the problem or even investigating until AFTER finishing unnecessary work."
Brittany D on January 2025
Since 1985, Kirkwood Plumbing has been performing fast, affordable, and high-quality plumbing services to homes and businesses in St. Louis and beyond. Our licensed and certified plumbers believe that quality workmanship and clear, honest communication makes all the difference, which is why you can count on us to always deliver honest recommendations, unmatched service, and 5-star customer care. No job is too big or small for our skilled plumbers, so whether you need seamless installations, remodels, repairs, or replacements, our team can help. From designing and installing your dream kitchen to replacing an outdated water heater and everything in between, you can count on our plumbers to exceed your expectations at every turn.
"I cannot recommend Kirkwood Plumbing/Mr. Rooter anymore after my experience. I called because the copper pipe on my water heater (I believe the temperature and pressure valve) would leak when we took a shower. The plumber they sent was very nice and told me that he discovered the issue was a failed PRV. He said that when multiple faucets ran at the same time, the pressure was reduced and that meant the PRV failed. I even asked if this would fix the leaking copper pipe on the water heater and he said yes. He quoted me $785 to replace and although that seemed a bit high, I agreed. He left and got the part, came back and replaced it. Well, when he was done with that replacement he said he “looked closer at the water heater” and actually my expansion tank had ALSO failed and was mostly water when it should be air. Only he just looked and discovered this after doing $800 of work??? And oh the pipe between the water tank and expansion tank had been leaking at some point but was not now. He recommended a new expansion tank and replacing that pipe section. He quoted me an additional almost $700 to do that job!!! And told me that the leaking from the water heater would not be fixed until he also did this. He said he thought the PRV had failed causing the expansion tank to fail and he would need to go out to get a new expansion tank too. He apologized for not realizing that sooner he said. This is completely unacceptable. At this point I’m essentially held hostage by your company to complete the job as the already $785 would not have fixed the leak as told. I told the plumber it’s disappointing because if I knew it was a much bigger issue I would have likely gotten other quotes, and in addition, I don’t feel like I could really trust him or the company at this point. I agreed to do the expansion tank for an additional $271 and would wait for the pipe to be fixed since it was not currently leaking and only showed signs of leaking in the past. I will never again use this company and will make sure to spread my experience. While doing some jobs you may discover additional issues, this wasn’t the case here. All he had to do was test the expansion tank (which is apparently a common failure for temperature and pressure valve issues) BEFORE starting the job and give me a quote for the actual fix. Not do an expensive job saying it will fix the issue and then saying that it wouldn’t fix it after. He even said it was his mistake. Again, he was very polite, but it is completely unacceptable to essentially hold your customers hostage halfway through a job saying the first fix wouldn’t even fix the problem, after doing it. I’ve since learned that the expansion tank should have immediately been tested for this issue and that it was rather backward to check the PRV first, as the expansion tank is often the culprit in these cases and that considering he said that it was mostly water rather than air, it would have been easy to diagnose. As for the PRV, with the water off it maintained 60psi and dropped 10-20 points when two faucets were on, which I have since learned may also be normal operation and not needing replaced. I’m not sure if this is how all customers are treated or just women customers. My advice is do not use this company. They respond quickly but will gouge you and not provide upfront pricing. He could have saved himself two trips out (making this take much longer) as well as given me upfront pricing had he just “looked at the water heater closer” the first time- you know the apparatus I called them out for in the first place. Offering “upfront pricing” is clearly not something they do. I now feel like I paid $785 for a service I did not need when I really just needed a new expansion tank and could have paid for that/fixed that without replacing the PRV and checked to see if that fixed the problem. I even told him I did not have pressure issues. Beware for unneeded services at a high cost and not adequately diagnosing the problem or even investigating until AFTER finishing unnecessary work."
Brittany D on January 2025

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"This company is outstanding. I can not sing them enough praises."
Jacqueline W on May 2025
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"This company is outstanding. I can not sing them enough praises."
Jacqueline W on May 2025

Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"Very professional service, and great customer service."
Janet H on April 2025
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"Very professional service, and great customer service."
Janet H on April 2025

Garrett Heating & Cooling
Garrett Heating & Cooling
Garrett Heating & Cooling, are the premier heating and cooling company serving in Illinois for seven years. We do residential and commercial and pride ourselves on customer satisfaction. Call today!
"On time, easy to understand. Even though I needed much more was able to repair a few areas to keep it limping along to fit my budget"
John P on August 2025
Garrett Heating & Cooling, are the premier heating and cooling company serving in Illinois for seven years. We do residential and commercial and pride ourselves on customer satisfaction. Call today!
"On time, easy to understand. Even though I needed much more was able to repair a few areas to keep it limping along to fit my budget"
John P on August 2025

Middle Man Maintenance LLC
Middle Man Maintenance LLC
Middle Man Maintenance LLC is a small business that is dedicated to helping you out, at half the price of big business'. My services include: heating and cooling, painting, flooring, fixture install, outlets, gutter cleaning, gardening or horticultural, as well as deck repair.
"Taylor arrived when he said he would. Knowledgeable and fully prepared with all the tools and materials he needed for the job. Nice guy, easy to talk to and work with."
Randy C on September 2025
Middle Man Maintenance LLC is a small business that is dedicated to helping you out, at half the price of big business'. My services include: heating and cooling, painting, flooring, fixture install, outlets, gutter cleaning, gardening or horticultural, as well as deck repair.
"Taylor arrived when he said he would. Knowledgeable and fully prepared with all the tools and materials he needed for the job. Nice guy, easy to talk to and work with."
Randy C on September 2025
JL General Contracting
JL General Contracting
General Contractor so jack of all trades 10+ years construction experience, friendly, professional, honest, very attentive to detail, quick, clean services. Free estimates!
General Contractor so jack of all trades 10+ years construction experience, friendly, professional, honest, very attentive to detail, quick, clean services. Free estimates!
Alpha Services STL
Alpha Services STL
We are a full service handyman service. We have an A + rating with the St. Louis Better Business Bureau and have over 30 years of experience with residential and commercial work. We can do from A/Z at your home or business. Please take a moment to check out our profile on the BBB website.
We are a full service handyman service. We have an A + rating with the St. Louis Better Business Bureau and have over 30 years of experience with residential and commercial work. We can do from A/Z at your home or business. Please take a moment to check out our profile on the BBB website.
Razor Repair
Razor Repair
Razor Repair is a family and disabled veteran owned A/C and Refrigeration Diagnostic and Repair service business, while also providing Applicance Repair and Gardening services. Our vision is to not only do the job right the first time and at a reasonable time but to pass on our savings to every customer at a 15% lower price than the national average.
Razor Repair is a family and disabled veteran owned A/C and Refrigeration Diagnostic and Repair service business, while also providing Applicance Repair and Gardening services. Our vision is to not only do the job right the first time and at a reasonable time but to pass on our savings to every customer at a 15% lower price than the national average.
The O Fallon, IL homeowners’ guide to boiler repairs
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Will an annual tune-up extend the life of your air conditioner? Read on to learn the average cost of an AC tune-up, and whether it’s worth the price tag.
This calculator will help you figure out what size mini-split you’ll need to service different rooms in your space depending on their square footage.
If you use a heat pump for warming your home, you’ll want to understand when to use the different modes for emergency heat vs. heat.
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