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Best boiler installation pros near Saint Paul, MO

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TRUSTED BY SAINT PAUL, MO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon3.2k+
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Saint Paul - Updated Nov 2026

Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
345
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Paul, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"It started off bad because I had the water heater installed, submitted my paperwork for my rebate for the installation and then my rebate ended up not getting honored because the water heater that was installed didn't qualify for Spire's rebate. Turn's out that the water heater that would fit my location as well as satisfy Spire's rebate, I would have had to wait 5 to 6 weeks for that specific water heater so, the owner of Hosack's Plumbing cut me a check for the amount of the rebate and the amount over time that the new water heater would have saved me. Not the perfect situation but, that was a win win for me as well as Hosack's Plumbing because a good water heater was installed just not one that would quite fit the Spire requirements for the rebate! Hence we didn't need to take a brand new water heater out and replace it with another water heater that was just .05 UEF Higher!"
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+2

Response time8 hrs
8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Fresh Air Heating & Cooling
Fresh Air Heating & Cooling
4.8(
277
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Paul, MO and surrounding areas

Approved

In business since 1947

Free estimates

Emergency services offered

"Great Experience. I was concerned about the 22 yr age of our air conditioner able to keep working and wonder if a long wait time to get a product shipped like refrigerators last year, I called for a quote and within a week it was installed and working! Installers worked tirelessly until their work was done, clean and neat!"
Fresh Air Van
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+2

14 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Schraer Heating and Air Conditioning
Schraer Heating and Air Conditioning
5.0(
8
)
Gas Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Saint Paul, MO and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"The 3 Mustache Pledge! Schraer Heating and Cooling deserves every bit of praise I can give! I called them about a worrisome noise coming from my system — one that I could only describe through a few rather vague and comical sound effects. Despite my less-than-technical explanation, their technician quickly understood exactly what I meant, found the issue, and had it fixed in no time. Their professionalism, responsiveness, and ability to solve the problem so efficiently (and with good humor!) made the whole experience stress-free. I’m so grateful for their excellent service and expertise. Highly recommend Schraer Heating and Cooling to anyone looking for honest, skilled, and friendly professionals! I will definitely keep my maintenance agreement in full force and effect!"
Airlift rooftop unit
Duct installation
Geothermal job
Crane lift a rooftop unit
Finalize duct on a new construction

+3

Response time1 day
53 neighbors recently requested a quote
Avatar for Arrow Mechanical
Arrow Mechanical
4.5(
61
)
Gas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install - For Business

Serving Saint Paul, MO and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"They install 2 3Tton A/C and 2 New Electric Furnaces. They were very professional in they're work ethic's. Quality work, they even pointed out mistakes on the original install of our old equipment. You would have to go a long ways to find a better team to do your work."
Commercial refrigerator
Geo thermal
New water pressure tank and electric water heater
New electric water heater
Response time6 hrs
Response rate85%
Recommended by96%of homeowners
American Airtemp LLC
New to Angi
Gas Boiler or Radiator Heating System - Install - For Business

Serving Saint Paul, MO and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

American Airtemp LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. \n

Response time10 mins
Response rate100%
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
516
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+1 more

Serving Saint Paul, MO and surrounding areas

In business since 1979

Free estimates

Emergency services offered

"He arrived around the time discussed. He was very professional and courteous. He explained all of the different options and explained the procedures. I really like this company. Everyone is really courteous and helpful. The installation had to be sub contracted out. The person who did the installation was on time and did a good job."
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+18

Response time12 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for The Gutter Pros
The Gutter Pros
4.5(
28
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Paul, MO and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"First the owner of NPM Heating and Cooling (Andrew) came by and spent nearly two hours in my home doing a thorough inspection of the furnace for carbon monoxide leaks, etc. He ran the furnace for awhile and checked all areas of the home with a hand-held carbon monoxide detector as well as other tests on the furnace itself. He found 0% evidence of carbon monoxide and the furnace was functional when he left. However, since my home had no carbon monoxide detectors installed, Andrew cautioned me to make sure and install some before using the furnace.
A week or so later after I had installed the detectors, the furnace began to make a loud noise. So I called Andrew back and after our conversation he felt there was a good chance that the blower motor was going out. Since I know I'll be replacing the entire HVAC system within the year, I hated investing much into the old furnace, but needed to buy time.
Within a week, one of the NPM technicians was here and completed the repair with a used blower motor at less than half the cost of a new one. He was also in my home for nearly two hours and the total cost for all this service was $190.
The furnace and AC in my home are so old (installed in 1988) that I'm actually fortunate that they have lasted this long. I do plan to have the entire HVAC systems replaced within the year, and NPM will do that job. The efficient and reasonably priced repairs were a godsend, as I needed some time right now to gather up the funds to invest in replacing the HVAC systems.
Very professional and knowledgeable. I especially appreciate their honesty. They told me the truth after other contractors did not. A+
NPM is VERY highly recommended!


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Nearing installation completion, Amana S Series is paving the way!
The Team!
Preparing installation of the new, slim unit
These units, just like all the others, require a professional to install.  They are high-tech units and are very impressive.
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+14

Recommended by84%of homeowners
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Install Boiler FAQs, answered by experts

Most home boilers will need an expansion tank. That’s because these boilers are closed-loop systems, where the water is trapped. An expansion tank is needed when the boiler heats the water and it expands, allowing air to condense in the tank to make room for the water. Other types of boilers don’t use an expansion tank, such as traditional steam boilers, but these aren’t as common. And hot water tanks may be able to use a pressure release valve instead. When in doubt, call in a pro to take a look.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

Probably not. Moving a boiler to a new location is a very different prospect from replacing it in the same spot, and significantly more expensive. Plus, boilers are typically carefully positioned in proximity to pipes and radiators when installed. Homeowners may want to move boilers to free up space, prevent freezing problems that have happened in winter, or solve a noise issue—but it’s a much more costly proposition.

Boilers provide even heating, energy efficiency, and a quiet operation compared to forced air systems.

Many utility companies and government programs offer rebates or incentives for the installation of high-efficiency propane boilers. These can offset upfront costs and improve your return on investment. Check with your local utility or installer for current offers. Incentives vary by state and provider, so exploring regional programs can help maximize your savings.

The Saint Paul, MO homeowners’ guide to boiler installation services

From average costs to expert advice, get all the answers you need to get your job done.