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Best boiler installation pros near Wilmette, IL

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    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Wilmette - Updated Nov 2026

Avatar for Besco Air Inc
Besco Air Inc
4.7(
833
)
Gas Boiler or Radiator Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - Install+3 more

Serving Wilmette, IL and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"We were impressed with Besco from the start. We called them to replace a 20-yr old furnace and A/C. Ed came to look over our situation and found that our A/C coils had frozen, causing water to collect in the bottom of the furnace. Ed asked for towels and mopped up the 1” of water himself. The quote for new Trane equipment was reasonable compared to other quotes for similar equipment and contained 3 options. Ed got the permits for us and installation went very well. Installers efficient and explained what we needed to know. In addition to the furnace, they removed old piping from a water softener long gone. They fixed the ducts and cleaned up nicely. We look forward to having Besco maintain the new equipment."
Additional Photos
14 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Shavitz Heating and Air Conditioning
Shavitz Heating and Air Conditioning
4.7(
417
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Wilmette, IL and surrounding areas

Approved

In business since 1904

Free estimates

Emergency services offered

"I’ve continued to hired Schavitz for all things A/C and furnace for my home due to their knowledge, honesty, and professionalism. This time met with Craig since he specializes in boiler systems and once again he exceeded my expectations with his knowledge and service. If you want complete transparency and the highest level of service then don’t hesitate to hire Schavitz. Don’t forget to ask about their membership plan.....discounts on annual services, parts, and equipment. Great deal!"
Response time10 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
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 Wilmette, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Prompt service with very little advanced notice. Technician removed old flame sensor and installed a new one in about 20 minutes. Pleased with technician and service, and will do business again them again if needed. Owner called to confirm service and sent a text with name and information about the technician before his arrival."
17 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
139
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Wilmette, IL and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"The installers were very knowledgeable and courteous, and the price was very reasonable as well. The furnace works great and the efficiency is already saving us on our energy bill. Very pleased, will use again in the future. They have great customer service and are very kind and courteous."
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+20

Response time11 hrs
Response rate100%
144 neighbors recently requested a quote
Avatar for Legendary Service
Legendary Service
5.0(
27
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Wilmette, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I just won a beautiful water heater from Legendary Service, and they were amazing. The installation was quick, easy, and clean. The owners came down personally to make sure everything went smoothly. Very nice people and I would definitely go to them for all my plumbing and heating needs!"
Reclaimed Mechanical Room
Reclaimed Mechanical Room
Response time2 days
5 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,299
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Wilmette, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Tim came out promptly, made a diagnosis and explained it so that I could understand, and arranged for a replacement the following day. David and David arrived the following day on time and, unfortunately there was 3 feet of snow blocking their path to getting my boiler out and the heavy cast iron boiler in. They worked together to shovel a path, and then worked continuously through the day until the job was done. David did a great job of explaining the workings of the boiler and left the place mess-free."
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
5.0(
8
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Wilmette, IL and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

"Miguel and his Cahill team were great! Very courteous and conscientious in regards to cleanliness and care in our home. Worked quickly and seamlessly as a team. Would recommend to anyone needing HVAC service or installation. Our salesperson Molly is great too!!"
Trane Heat Pumps
Project Showcase
Trane 96% modulating, communicating furnace
Trane
Carrier

+5

Response time9 hrs
Response rate100%
29 neighbors recently requested a quote
Avatar for Kwik Serv Plumbing Heating and Cooling
Kwik Serv Plumbing Heating and Cooling
4.8(
20
)
Gas Boiler or Radiator Heating System - Install

Serving Wilmette, IL and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

Logo
May Special
0% Financing
2 neighbors recently requested a quote
Recommended by52%of homeowners
Avatar for ServiceMax
ServiceMax
4.5(
163
)
Boiler or Radiator Heating System - Install or Replace

Serving Wilmette, IL and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"MHC did great work while taking part in installing steam mixing stations in our company. Their response to our needs was just excellent. They worked long hours to meet projected completion time of a project and quality of their work was at highest level. I strongly recommended MHC to my fellow engineers at our company for incoming future projects."
 Mitsubishi MSY - 15000btu Indoor Unit
 Mitsubishi MUY Heat Pump - Outdoor Unit
 Mitsubishi 9000btu Indoor Unit - Wall Mounted
 Mitsubishi MXZ - 4 zone Heat Pump
 Mitsubishi MSY 9000btu Indoor Unit - Wall Mounted

+7

Recommended by97%of homeowners
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Install Boiler FAQs, answered by experts

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.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

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.

In most cases, repairing a radiator is more affordable than replacing it. A typical repair may cost between $100 and $200, while a replacement can average $1,500, with a range of $250 to $2,500 depending on the unit type. Radiator issues are often simple fixes for a professional, such as a blown fuse, malfunctioning thermostat, or a loose valve, and can take less than an hour. However, if the long-term costs of fixing the radiator are higher than replacement, it's better to get a new model. It is recommended to consult a heating expert to diagnose the problem and determine the best solution for your situation.

Deciding whether or not to replace radiators with a different heating system depends on your personal preferences. Radiators can take longer to heat up than a central heating system, and they take up floor space. However, they can be very efficient at heating, and they keep rooms at a more comfortable humidity level in the winter than forced-air systems.

The Wilmette, IL homeowners’ guide to boiler installation services

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