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Best boiler installation pros near Saint Louis, MO

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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.5k+
    Verified boiler installation services reviews

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

Avatar for Rhymes Heating & Cooling
Rhymes Heating & Cooling
4.8(
193
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Louis, MO and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"The salesman was knowledgeable and thorough. I did significant research and went with Carrier. I believe I received a fair price on excellent equipment. The installer arrived promptly at 7:00am as promised. He was cordial and clearly knew what he was doing. I was very happy with them and would recommend them."
Response time12 hrs
2 neighbors recently requested a quote
Recommended by98%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 Louis, 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
Perfect Air
4.7(
6
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint Louis, MO and surrounding areas

Approved

In business since 1982

Emergency services offered

Warranties offered

Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free"\nTechs available Sat & Sun call for appointment.

3 neighbors recently requested a quote
Recommended by100%of homeowners
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 Louis, 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
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 Louis, 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 Louis, 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 Louis, 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

Generally, an oil furnace is considered safer than a gas furnace for several reasons. While both types of furnaces can produce carbon monoxide, a leak in an oil furnace is easier to detect due to the smell. Oil furnaces also don't connect to a gas pipeline, which reduces the chance of a fuel leak. Most importantly, heating oil is not combustible, whereas natural gas is highly flammable. This means there is a much lower risk of combustion or explosion with an oil furnace. However, an oil furnace can still pose a fire hazard if it tips over.

To figure out if your boiler is worth repairing or if you need to replace your boiler, first figure out how old the unit is. Boilers last 15 to 20 years, so if your unit is 15 years old or older, it may be better to replace the entire thing depending on the severity of the problems. If it’s not quite that old, then it’s probably worth repairing. Another thing to consider is whether your warranty covers any of the repair costs. If so, it may be worthwhile to repair your boiler to keep it running.

If you want to have hot water in your home and part of your plumbing system, you'll need a hot water heater. An alternative may be to heat water as you use it, such as by boiling what you need on the stove. But that's much less efficient and takes considerably longer than hooking up a water heater. Another option is to rely on appliances, such as a dishwasher or washing machine, that heat the water themselves.

Professional HVAC installation requires licensed expertise in several areas, including electrical- and plumbing-related work. An HVAC team must know how to safely handle regulated refrigerant chemicals and the gas, oil, or propane used in furnaces and boilers. A proper HVAC installation protects your home from energy loss, fires, and even carbon monoxide leaks.

Costs depend on system size, efficiency rating, and additional features like zoning or smart controls.

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

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