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Best boiler installation pros near Saint Charles, MO

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon2.4k+
    Verified boiler installation services reviews

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

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 Charles, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

14 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for SmartHouse Heating & Cooling
SmartHouse Heating & Cooling
4.7(
593
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Charles, MO and surrounding areas

Approved

In business since 1947

Free estimates

Emergency services offered

"Marc spent a good amount of time gathering information and explained everything in detail. He readily answered all of my questions and generated an in-depth report that made my decision pretty easy. His installation crew was very professional thorough and courteous. I’m very happy with my decision and the completed project."
Old boiler being removed
A Manual-J load calculation is performed to determine the precise amount of heating and cooling needed for each space.
Installing a Mitsubishi Hyper Heat Mini Split System to Heat and Cool this Sunroom Addition.
Mitsubishi outdoor unit installed on rooftop to heat and cool 3rd floor of this St. Louis City home.
Daikin FIT Heat Pump Installed in University City Home

+106

Response time2 days
3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Schraer Heating and Air Conditioning
Schraer Heating and Air Conditioning
5.0(
8
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Saint Charles, MO and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"I cannot say enough wonderful things about this amazing company! My daughter and I had been without a furnace for over 6 years. We used space heaters in the bedrooms, bathroom and kitchen, but the rest of the house stayed cold. Along with that, I had a constant fear of an electrical fire resulting from the units, because last year a young mother and her baby died in a house fire down the street from us, most likely caused from a space heater. When Schraer came to our home that offered to install gas furnace free off charge that was just sitting in their shop! We are truly Blessed and Grateful for their kindness and generosity! There are good people out there in the world, and the owners and employees of Schraer Heating and Cooling are some of best!"
Airlift rooftop unit
Duct installation
Geothermal job
Crane lift a rooftop unit
Finalize duct on a new construction

+3

Response time1 day
51 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 Charles, MO and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"My fridge is a hunk of crap that is difficult to work on. They came out the same day I made the request on HA and started working on it. It took two days because of things beyond their control but they still only charged me the original quoted price and came back and got it working great. Will use them in the future."
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
Avatar for House Doctor's
House Doctor's
5.0(
3
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Charles, MO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Property maintenance is an essential yet often daunting task for homeowners and businesses. Finding the time or the right tools to carry out these tasks can be difficult and exhausting, leading to delays and frustration. At House Doctors of St Louis, we are here to alleviate these challenges, providing reliable solutions to all your maintenance and improvement needs efficiently and professionally.\n\nOur skilled handyman team excels in managing an extensive range of tasks for residential and commercial projects alike. We transform overwhelming to-do lists and stalled projects into completed tasks, ensuring a smooth process from start to finish. Whether it's quick repairs or major renovations, our technicians handle a variety of requests backed by free estimates to initiate the process, thus making your goals achievable.\n\n

Hvac Install
Hvac Install
Hvac Install
Hvac Install
Hvac Install

+1

American Airtemp LLC
New to Angi
Gas Boiler or Radiator Heating System - Install - For Business

Serving Saint Charles, 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%
AMC Plumbing and Contracting
New to Angi
Gas Boiler or Radiator Heating System - Install

Serving Saint Charles, MO and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

Hello my name is Anthony, I am a licensed master plumber with over 20 years in the trade.\nLicensed, bonded and insured. \nI am a second generation master plumber and love to help people in there time of need. We offer very fair pricing and extremely professional service. \nWe are a family owned an operated company out of wentzville MO.\nWe would love to take care of your pmumbing needs. \n

1 neighbors recently requested a quote
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Install Boiler FAQs, answered by experts

Warmed or cooled air can escape your home through drafty windows and doors. If you notice any gaps, be sure to caulk and seal them. You can also hire a local pro for an energy audit to get a list of energy-saving recommendations. 

Finally, check your insulation. It can settle in over time and become less effective. The Environmental Protection Agency (EPA) estimates that you can save an average of 15% on heating and cooling costs (or 11% of total energy costs) by sealing leaks and making sure attics, crawl spaces, and basements have a nice layer of insulation.

If you're often struggling with radiator issues like chilly spots, leaks, or annoying noises, those are common indications that your radiator may need to be replaced. Corrosion, uneven heating, and persistent hissing sounds are common issues as well. When repairs become a regular chore and your home’s energy bills start to rise, a new radiator will bring the comfort and savings you need.

Steam boilers require flushing at least every six to 12 months to keep them operating effectively for as long as possible. Depending on your water quality and frequency of use, you might need to do this more frequently. The flushing process helps to remove problematic buildup of sediments. While a boiler contractor near you can perform a thorough annual flush, learning how to drain the system yourself means you can do this monthly if you experience speedy mineral accumulation because of hard water. 

Costs depend on unit size, labor, fuel type, and whether additional piping or venting is needed.

The right type of HVAC system will depend on several factors, including your climate, budget, preferences, and existing HVAC setup. For example, if you live in an area that experiences extreme weather, then a split system would likely be the best option. Or, if budget is a concern, consider installing a ductless system in just one room.

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

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