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TRUSTED BY SAINT JOHN, MO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.7k+
    Verified boiler installation services reviews

Find Boiler installation pros in Saint John

Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
344
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"Very good. Very professional. Explained new codes which resulted in additional parts and work to install. Answered all questions and offersed suggestions on other plumbing items to improve operation and which I could easily perform. Performed installation, tested system and verified existing plumbing continued to operate properly."
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+2

Response time6 days
10 neighbors recently requested a quote
Recommended by93%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 John, 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 time3 days
5 neighbors recently requested a quote
Recommended by91%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 John, 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 John, 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 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 John, MO and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"They were absolutely wonderful. They had previously come 3 or 4 times for repairs on the old furnace and only charged me once. The other times they did it for free. They were here for 2 days to do the installation. The new system is very energy efficient. I shopped around and got a very good price. They were very punctual and organized in terms of scheduling. They were here when they said. They were very professional in their explanations about the heating systems. I had a lot of questions and they very patiently answered all my questions. They gave me a lot of options to choose from. They are a totally reliable company. They cleaned up everything and they were very professional. They came when they said. The owner even called and came back a week later to check to see if everything was okay. They wouldn't take any money until I had the system running for a whole week and was satisfied."
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.
Additional Photos

+14

Recommended by84%of homeowners
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint John, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"I would recommend this company to everyone. Loved they are a small local, family owned business. Our furnace-boiler went out on a Saturday, Monday morning they were out and a quote in the afternoon. They made sure we had heat before Thanksgiving day. Very professional, knowledgeable, great craftsmanship. Best price on comparable equipment out of 3 quotes. Thank you!!"
Military Discounts (retired & active)
Senior Citizen Discounts
Residential HVAC
Multifamily & Commercial Installation & Maintenance
Professionally Installed Ducts

+6

Response time3 days
Response rate100%
Recommended by91%of homeowners
Avatar for Preferred HVAC Services
Preferred HVAC Services
5.0(
9
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Saint John, MO and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

"Last December, on one Friday early evening, I noticed my heating system was not working and it was very cold. I called PHCS services and they sent a technician Saturday morning to diagnose the issue. FYI, I am a handyman and fix a lot of things around my house, but I don't have the right tools for this service and don't like to do anything with gas pipes. I watched the technician doing his work and realized he is an expert. He checked everything and was able to detect that the gas valve was the culprit. He also recommended replacing the pressure switch. He explained to me what was happening and even showed me how the failure was triggered. In addition, he checked the whole system and even recommended me to install two carbon monoxide detectors, one by the heating system and one on the first floor by the bedrooms. I haven't bought and installed them yet - mea culpa. He didn't have the parts in his truck, but he said, Monday morning another technician would come with the parts and replace them. Before leaving, he explained to me that I could turn on the heating system for a few minutes to heat the house until the pressure valve would fail. After that, I would need to wait sometime and then could turn on the system again. I followed his instructions and was able to stay and sleep in a warm house on Saturday and Sunday. As promised, Monday morning, another technician came over, replaced the parts, and made the necessary calibrations. Few days later, I received an email with the bill, which was very reasonable, and so far my heating system is working like a champ. It is nice to know that there are still good and honest people in this world."
IWave Install
new ac
tstat after completion
IWave Install
micron reading for AC

+54

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

If you go to turn it counterclockwise and it won’t turn anymore, it’s open. Like most other valves, you should be able to turn a radiator valve counterclockwise (to the left) to open it and clockwise (right) to close it. To close a radiator valve, turn it clockwise until you meet some resistance and can’t turn anymore, but do so carefully to avoid breaking the valve.

Installing a boiler requires training, a specific skill set, and extensive experience. Boiler installation can be extremely dangerous, as it involves working with water lines, gas lines, and electricity. For this reason, it’s strongly recommended that you hire a professional to install your boiler. Some states even consider it illegal to work on a boiler without the proper licensing.

The most important sign of a boiler problem is something happening unexpectedly, which is why regular boiler maintenance is important. Unexpected problems can include strange smells, new leaks, and unexpected noises that your boiler wasn’t making before. Additionally, if a boiler keeps shutting off or can’t maintain a specific temperature range, it’s time to call in an expert.

A furnace is a big unit where gas, heating oil, or electricity heats the air. The warmed air is then pushed back out through ducts and vents. 

A boiler uses electricity, heating oil, or gas to heat water that is pushed into the room through a radiator. This is one of the oldest and most effective ways to heat a house, but radiators can also be unsightly and leave hot and cold spots in the room.

Heat pumps use a refrigerant to move heat from outside into the house and return it to the room through ducts and vents.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

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

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