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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon477
    Verified boiler installation services reviews

Verified Reviews for Boiler Installation pros in Millstadt, IL

*The Angi rating for Boiler Installation companies in Millstadt, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

*The HomeAdvisor rating for Boiler Installation companies in Millstadt, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

Last update on June 21, 2026

Find Boiler installation pros in Millstadt

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
3.4(
353
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Millstadt, IL and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"My technician Keith was great. Friendly and super informative. Also too a quick look at the entire drainage system and gave my an idea of where problems will pop up the future without preventative measures (my home was built in the 50s and while the previous owners took really good care of the house nothing has been gutted and replaced yet)."
Additional Photos
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+5

159 neighbors recently requested a quote
Recommended by74%of homeowners
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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 Millstadt, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Furance was not working, call House Doctor. They were out the next day and got it back up and running. Professional and efficient. Plus, very affordable."
Hvac Install
Hvac Install
Hvac Install
Hvac Install
Hvac Install

+1

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American Airtemp LLC
New to Angi
Gas Boiler or Radiator Heating System - Install - For Business

Serving Millstadt, IL 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%
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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 Millstadt, IL 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
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Avatar for Air Duct Doctors
Air Duct Doctors
4.7(
781
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Millstadt, IL and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Very professional and got it done."
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After Vent Cleaning
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Recommended by92%of homeowners
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Avatar for Sparks Junk Removal and Hauling LLC
Sparks Junk Removal and Hauling LLC
5.0(
20
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Millstadt, IL and surrounding areas

Free estimates

"I was very satisfied with the service. They were punctual and maintained excellent communication about possible changes due to the weather. They arrived on schedule and completed the job efficiently. I would definitely recommend the company to anyone who needs this kind of work done."
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+15

Recommended by100%of homeowners
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Avatar for Froggy's Heating & Air LLC
Froggy's Heating & Air LLC
4.2(
143
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Millstadt, IL and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Jeremiah was on time and he tried fixing the leaky toilet first. when that didn't work, he replaced the toilet with a new one (pre-purchased by me) and additionally installed a water bidet that I had purchased eariler as well. He offered to dump the old toilet for a fee which I availed and was overall a positive experience. Looking to hire him to do additional plumbing and furnace related work in the future.

"
Working hard for you.
We do plumbing too
Look for our truck
Recommended by84%of homeowners
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JMW Mechanical Heating & Cooling
4.7(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Millstadt, IL and surrounding areas

Credit card accepted

"Very professional company. He returned my call promptly, came out to install my water heater in timely manner, and followed up after job was finished. He went above and beyond to make sure everything was up to code. I have no negative feedback for this provider."
Recommended by92%of homeowners
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DrainMaster tech llc
5.0(
13
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Millstadt, IL and surrounding areas

Your satisfaction is very important to us, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today. \n

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

You should get anywhere from three to five quotes for HVAC replacement to get an idea of the average cost of a new unit. Although this quote-collecting process can be time consuming, it allows you to compare what work is required, what type of unit you should install, and how much you should expect to pay for the service.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

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.

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.

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

The Millstadt, IL homeowners’ guide to boiler installation services

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

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