
Get matched with top boiler installation pros in Union, MO
Enter your ZIP and get matched with up to 5 pros
Need a pro for your boiler installation project in Union, MO?
TRUSTED BY UNION, MO HOMEOWNERS
4.7
Average homeowner rating73
Verified boiler installation services reviews
Verified Reviews for Boiler Installation pros in Union, MO
*The Angi rating for Boiler Installation companies in Union, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
*The HomeAdvisor rating for Boiler Installation companies in Union, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
Last update on October 29, 2025
Find Boiler installation pros in Union

Mr. Rooter Plumbing of St. Charles
Mr. Rooter Plumbing of St. Charles
At Mr. Rooter® Plumbing every customer’s individual needs are important. Whether it’s a simple sink clog or a damaged sewer line, you can count on a Mr. Rooter plumber to take care of your plumbing needs – day or night – with never an overtime charge. Our professional service, quality products and honest, up-front pricing make Mr. Rooter the best value in plumbing services nationwide. Mr. Rooter is ready for all emergency plumbing issues, from clogged drains and sewage backups to frozen pipes and leaking water heaters. You can count on an expert diagnosis from Mr. Rooter with our camera inspection tools. Then we’ll fix it right the first time, whether it takes HydroScrub® drain cleaning or trenchless pipe repair, with courteous smiles on our faces. There's a reason they call us Mr.® Call your local Mr. Rooter today.
At Mr. Rooter® Plumbing every customer’s individual needs are important. Whether it’s a simple sink clog or a damaged sewer line, you can count on a Mr. Rooter plumber to take care of your plumbing needs – day or night – with never an overtime charge. Our professional service, quality products and honest, up-front pricing make Mr. Rooter the best value in plumbing services nationwide. Mr. Rooter is ready for all emergency plumbing issues, from clogged drains and sewage backups to frozen pipes and leaking water heaters. You can count on an expert diagnosis from Mr. Rooter with our camera inspection tools. Then we’ll fix it right the first time, whether it takes HydroScrub® drain cleaning or trenchless pipe repair, with courteous smiles on our faces. There's a reason they call us Mr.® Call your local Mr. Rooter today.

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

Tri-State Water, Power & Air
Tri-State Water, Power & Air
In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!
"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"
Jerry B on December 2024
In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!
"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"
Jerry B on December 2024

Good Service Heating & Cooling, LLC
Good Service Heating & Cooling, LLC
Good Service Heating and Cooling,LLC. Over 30 years of HVAC experience. Honest and affordable. Do it right the first time.
"He responded very quickly and was able to come out and fix my mini split. I would recommend this company to anyone looking for a fair price and good work. Thanks again! "
Jackie K on October 2025
Good Service Heating and Cooling,LLC. Over 30 years of HVAC experience. Honest and affordable. Do it right the first time.
"He responded very quickly and was able to come out and fix my mini split. I would recommend this company to anyone looking for a fair price and good work. Thanks again! "
Jackie K on October 2025

the notorious F.I.X
the notorious F.I.X
We specialize in all around home repair, hvac and custom sheet metal fabrication, maintenance, and improvements. The safety and investment of one's home is our top priority.
We specialize in all around home repair, hvac and custom sheet metal fabrication, maintenance, and improvements. The safety and investment of one's home is our top priority.

Santoro Pro Painting & Contracting LLC
Santoro Pro Painting & Contracting LLC
At Santoro Pro Painting & Contracting, each client becomes like family. With traditional values that support an old school work ethic, all jobs get done cleanly, affordably and honestly. As a union trained painter and taper with a love for music and art, Danny has spent many years painting, designing, fixing and repairing many residential and commercial properties around the St. Louis area to make them both functional and beautiful.
At Santoro Pro Painting & Contracting, each client becomes like family. With traditional values that support an old school work ethic, all jobs get done cleanly, affordably and honestly. As a union trained painter and taper with a love for music and art, Danny has spent many years painting, designing, fixing and repairing many residential and commercial properties around the St. Louis area to make them both functional and beautiful.
Lady of the House LLC
Lady of the House LLC
We lay tile, flooring, hang cabinets and doors, drywall, build decks, remodel bathrooms, kitchens, just about anything. We pay close attention to detail and work close with our clients to make sure they are satisfied. We are a small company that has worked construction for 15+ years.
We lay tile, flooring, hang cabinets and doors, drywall, build decks, remodel bathrooms, kitchens, just about anything. We pay close attention to detail and work close with our clients to make sure they are satisfied. We are a small company that has worked construction for 15+ years.
Superior Heating Cooling Plumbing
Superior Heating Cooling Plumbing
Superior Heating | Cooling | Plumbing offers heating, cooling and plumbing services for residential homes. We are a third generation family owned company founded in 1972. We have locations in Lake St. Louis & Chesterfield, but cover St. Louis, St. Charles, Warren, Lincoln & Franklin counties. We operate a fleet of vehicles for any needs that you may have.
Superior Heating | Cooling | Plumbing offers heating, cooling and plumbing services for residential homes. We are a third generation family owned company founded in 1972. We have locations in Lake St. Louis & Chesterfield, but cover St. Louis, St. Charles, Warren, Lincoln & Franklin counties. We operate a fleet of vehicles for any needs that you may have.
The Union, MO homeowners’ guide to boiler installation services
From average costs to expert advice, get all the answers you need to get your job done.

Tankless water heater costs depend on the size of your water heater, location, fuel type, and more. Keep reading to calculate your expenses.

Learn about the different factors that go into water heater gas valve replacement costs to see if you should DIY the project or call a pro.
•Find out the average tankless water heater repair cost, what impacts pricing, and how to save. Get expert tips to plan your repair budget with confidence.

A lack of hot water might not mean an expensive repair. Use this guide to learn how to replace a thermocouple on a water heater as a potential fix.

What size water heater you need depends on the number of people in your household and how much water you use. Keep reading to learn about water heater sizing.

Discover all the tankless water heater pros and cons you should know. Learn how these energy-efficient systems can save you money and space while considering their limitations.
- Saint Clair, MO Boiler installation pros
- Villa Ridge, MO Boiler installation pros
- Washington, MO Boiler installation pros
- Robertsville, MO Boiler installation pros
- Gray Summit, MO Boiler installation pros
- Beaufort, MO Boiler installation pros
- Labadie, MO Boiler installation pros
- Pacific, MO Boiler installation pros
- Leslie, MO Boiler installation pros
- Lonedell, MO Boiler installation pros
- Augusta, MO Boiler installation pros
- Sullivan, MO Boiler installation pros
- Marthasville, MO Boiler installation pros
- New Haven, MO Boiler installation pros
- Gerald, MO Boiler installation pros
- Dittmer, MO Boiler installation pros
- Eureka, MO Boiler installation pros
- New Melle, MO Boiler installation pros
- Wildwood, MO Boiler installation pros
- Rosebud, MO Boiler installation pros
- Glencoe, MO Boiler installation pros
- Bourbon, MO Boiler installation pros
- House Springs, MO Boiler installation pros
- Ellisville, MO Boiler installation pros
- Foristell, MO Boiler installation pros
- High Ridge, MO Boiler installation pros
- Wright City, MO Boiler installation pros
- Hillsboro, MO Boiler installation pros
- Wentzville, MO Boiler installation pros
- Warrenton, MO Boiler installation pros
- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"



