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Best boiler installation pros near Illiopolis, IL

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

Avatar for Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
3.4(
357
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Illiopolis, IL and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"I have used the company many times. Two technicians came out for the tuneup and completed the job in about 2 hours. The company has also replaced the furnace and AC in the past. They are very thorough and professional. The staff is also very friendly and available for service. I am a member of their club which makes them easily accessible to me."
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+5

312 neighbors recently requested a quote
Recommended by73%of homeowners
Advanced Air Heating & Cooling
5.0(
28
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I came home from work to find a faint burning smell and a cold house.  The thermostat for the gas furnace was set to 'on', but I could not hear the furnace running.  Turned it off then back on and smelled a strong electric burning odor.  I called several home furnace repair places that were 'A' rated on this website, but the first two had an answering service and told me someone would be in touch the next morning.  The third was Advantage Air.  I left a voicemail, and within a few minutes Bob called me back and asked questions to help pinpoint the issue.   From the symptoms he suspected it was a burned out blower fan motor.  He said he would call back in the morning when he was on his way.  I called the other two companies and canceled.  The next morning he called at 7:30 and was at my house within 15 minutes.  He quickly determined that his suspicions were correct.  Within two hours of his arrival he removed the old blower fan, left to find a replacement, returned and had the new fan, capacitor, and frame mount installed, and inspected the rest of the furnace to ensure it was working properly.  I didn't even have to be late for work.  Bob was honest, fair, and professional; I will definitely be using his services again for any heating and cooling problems.
"
Recommended by100%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"I was highly pleased with Jim's work. He not only accomplished everything on my list, but he made several suggestions on several
issues that added further performance improvements. 
Jim's response time from my original call was excellent. He is very easy to work with, communicates well and is very customer-oriented.
 
The amount he charged me for the work done and considering the time spent traveling to my house, doing the work and answering my questions and giving me advice was very reasonable. 
I highly recommend Jim for computer installation, network issues,  problem resolution and performance improvement. I will definitely call him in the future for any new issues I have.


"
2014 Super Service Award Winner!
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Recommended by97%of homeowners
Avatar for Tiger Services, LLC
Tiger Services, LLC
3.3(
245
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Illiopolis, IL and surrounding areas

In business since 1993

Emergency services offered

Warranties offered

"The technicians that start the job need to finish the job. We had different technicians sent almost daily causing a lot of confusion for the tiger employees and a lot of frustration for me. Over all the quality of the work was great, once it got completed correctly. I would recommend that they look at their electricians, they are way over priced and did not install the correct outlet. That is a big problem to me."
Plumber Service
Bathroom Remodel
Tankless Water Heater
Water Heater Service
Bathroom Remodels

+27

Recommended by80%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

In business since 1971

Credit card accepted

"AHS is ok. They cover repairs of most everything under the roof of your house. The companies that contract with them are not always the best. You call AHS with the issue, they send a fax to the repair company and give you the contact info. If they don't contact you within 24 hours, you call them. Sometimes they answer, sometimes they don't. When they arrive (usually three days or so later), they service the item. if it has issues within the 90 days, you call AHS again, they are sent out with no charge. If the serviceman decides the unit is unrepairable, AHS will allow you to choose a replacement from their listing (usually not as good as what you have) they will install and remove your old item, or give you wholesale amount to buy and install your own. Prices vary on what you want covered and what you want the copay to be, plus where you live. For me it is 49.99 per month with a 75.00 time of service order. You can have more than one item serviced at the same time under the same fee. If you have a SEAR product the repair guys are great. Not that wild about the other ones they send out. But it is a big savings compared to calling someone on your own. The cost of service is only the 75.00 copay."
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+2

Recommended by65%of homeowners
Avatar for H&L Services LLC
H&L Services LLC
4.1(
9
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

In business since 2022

Free estimates

Emergency services offered

We are a family owned company and as a company we are just getting started but as far as experience and knowledge we take the cake. Our employees combined have over 60 years of experience and bring a wealth of knowledge to the table when it comes to general construction/ home maintenance. No job is to big or to small for H&L Services LLC. We know life come at you fast and unexpected issues arise when it comes to your home, so gives us a call for all your humor maintenance concerns because here at H&L you’re not just in good hands you’re in family hands.

Complete tear out and remodel with new plumbing
Floating shelves
Shower surround in master bedroom
Fascia/soffit repair
Roofing Project

+29

Recommended by87%of homeowners
Avatar for Anthony Bright Appliance Repair
Anthony Bright Appliance Repair
5.0(
2
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

Credit card accepted

In home appliance repair on most major appliances and brands. EPA certified to handle refrigerant to work on refrigerators and freezers. Keen problem solving skills giving you a quick and accurate diagnosis. I have been in business for 7+ years and have been in appliance repair for 15+ years.

Recommended by100%of homeowners
Advanced Air Heating & Cooling
4.8(
3
)
Electric Boiler or Radiator Heating System - Install

Serving Illiopolis, IL and surrounding areas

In business since 2009

Free estimates

Credit card accepted

Advanced Air Heating & Cooling, 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

Response time2 days
Recommended by100%of homeowners
Avatar for Radiance
Radiance
5.0(
2
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Illiopolis, IL and surrounding areas

In business since 2019

Emergency services offered

Credit card accepted

Radiance is here to get your home back in shape. We provide a complete spectrum of Exterior Home services with professional and personal care for each client's needs. We are here to guide you and give you our advice based on your goal and dream. We believe in value. Call us today so we can turn your dreams into reality

Exterior Detail
Mobile Detailing
This is one of my last projects. 67’ Ford Galaxie 500 custom, which had a blown motor, and no fuel tank.
Mobile Detailing
Golf Cart Rewired & Electric Motor Replacement

+36

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

No, boilers and water heaters are not interchangeable because they serve different primary functions. Boilers are used for central heating systems, providing hot water or steam to heat your home. In contrast, a water heater's purpose is to supply hot water for daily household use, such as for faucets and showers. A water heater alone cannot supply the warm water or steam needed for a central heating system.

While they are not interchangeable, it is common to have both a boiler and a water heater. In fact, a conventional boiler often works best when a water heater system is already in place. The two systems can be combined to provide both heating and hot water, either by pairing a boiler with an indirect water heater or by installing a premade combination boiler-water heater unit. For home heating, some homeowners may also opt for a furnace instead of a boiler.

If you’re looking for a way to heat your home that is lower in cost and higher in efficiency, you should run the numbers to see what it would look like to switch to gas or electric heat. The best choice for how to heat your home depends on your location, budget, and energy priorities.

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 home radiator works by using radiation and convection to transfer heat throughout your home. Electric radiators use metal to conduct heat and warm the air, which then rises to warm the room. Steam and hot water radiators work with a boiler and piping system to pump thermal energy throughout the home. Hot water radiators use a boiler to heat the water before circulating it to the radiator, while steam heating radiator systems convert the heated water to steam before circulating it out. When the water or steam cools, it travels back to the boiler to be heated again.

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.

The Illiopolis, IL homeowners’ guide to boiler installation services

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