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Best boiler installation pros near Pleasant Hill, MO

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon994
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Pleasant Hill - Updated Nov 2026

Avatar for Insulation Pros
Insulation Pros
4.9(
73
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"While having my siding removed and replaced, decided to insulate the exterior walls. They coordinated with the painter and checked the weather for when the project could be done. Also, the estimate was given several months in advance and was still honored once the project got going. They needed to come out twice to install the insulation because the siding took time to come off the house, but they were more than willing to work with the painter's schedule to make sure things got done in a timely fashion. Friendly folks who take time to answer questions and did excellent work getting the house insulated and now operating efficiently."
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+16

Recommended by97%of homeowners
Avatar for First Mate Heating & Cooling
First Mate Heating & Cooling
4.9(
24
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"He came in and looked at the air conditioner and the furnace and pulled out the book and calculator. He suggested me all I wanted and he gave me the best quote for it. I am happy with them. They were prompt and the guy was on time for his call. He got down to work and didn’t mess around. He didn’t try to oversell me."
Recommended by95%of homeowners
Bob Mills Heating & Cooling
5.0(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

In business since 1999

Free estimates

Credit card accepted

"Bob and his crew arrived right on time the morning of the appointment. A couple of them began dismantling the old furnace in the basement of the house, sweeping the floor and preparing the site for the new one, while a couple others did the same with the old AC unit outside in the backyard. Only when it occurred to me that I hadn't taken the old, broken water heater into account that I asked him if he could also install a new one fo those while he was there. He gave me a fair price quote, voiced no objections about messin gup his schedule or anything, and promptly went to obtain a water heater while his workers continued with their tasks. Everything was done in a matter of a few hours and the house was cleaned up better when they left than it was before they came!  I will call Bob for each of the next houses I plan to buy and rehab, knowing that he will do just as good a job on each one as he would on his own home or my own. Bob cares about the quality of his work and it is reflected in how he does business.
"
Recommended by100%of homeowners
FlameTech
5.0(
7
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

Emergency services offered

"Great experience with Flame Tech. George was knowledgeable and responsive. He provided an accurate estimate over email based on a number of photos and a few phone conversations which streamlined the bid process considerably. They replaced my AC in a few hours for a fair price and educated me on other safety considerations related to my furnace. He also helped me diagnose a rattle in my air ducts that would have given me fits. Good price, know-how, and customer service, I would use Flame Tech again."
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+1

Recommended by100%of homeowners
Avatar for Mammoth Heating and Cooling LLC
Mammoth Heating and Cooling LLC
4.9(
9
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"Fantastic company!!! Mammoth removed my conventional HVAC and all ductwork while upgrading my home to an energy efficient split system.... which is amazing! My entire house is comfortable, the system is great and our overall energy bills have dropped! The Mammoth team were on top of their game and I couldn’t be happier with their service."
Agnus Arts HVAC
Agnus Arts HVAC
Agnus Arts HVAC
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+9

Recommended by100%of homeowners
Avatar for Liles Heating and Cooling, LLC
Liles Heating and Cooling, LLC
5.0(
7
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Pleasant Hill, MO and surrounding areas

In business since 2010

Free estimates

Emergency services offered

We are a full service company. Also we offer service contracts for an affordable price and 15% off on any parts. 24hour same day service. Also we offer Plumbing,Electrical and Heating and Cooling service and installation. Geothermal is one of our specialties. All major credit cards are Excepted and financing available with Approved Credit.

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+14

Recommended by100%of homeowners
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Install Boiler FAQs, answered by experts

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.

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

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.

Installation costs range from $4,000 to $12,000, depending on unit size, efficiency rating, and labor.

While you’ll pay more upfront for a brand-new HVAC unit, you can save money in the long run. Here’s how to save on your new HVAC system:

  • When purchasing a high-efficiency system, your energy bills will be lower in the future.

  • You may be eligible for special offers from your local energy company.

  • Depending on the system, you may be eligible for HVAC rebates and tax credits.

  • Choose to replace your air conditioning unit and furnace simultaneously to save on labor and installation costs. 

The Pleasant Hill, MO homeowners’ guide to boiler installation services

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