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TRUSTED BY O FALLON, IL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon756
    Verified boiler installation services reviews

Find Boiler installation pros in O Fallon

Avatar for Air Duct Doctors
Air Duct Doctors
4.7(
781
)

Serving O Fallon, IL and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"We purchased 2 of the deals because we have zoned heating/cooling systems.

in addition to that we had to pay extra for additional vents and mainlines.

I feel like the extras piled up pretty quickly but overall we were satisfied with the job.


"
Before Vent Cleaning
After Vent Cleaning
Additional Photos
Additional Photos
Recommended by92%of homeowners
Avatar for Manson's Heating & Cooling
Manson's Heating & Cooling
5.0(
9
)

Serving O Fallon, IL and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"He works very hard to keep our costs down and help us stay productive.  We call him all hours of the night and seven days a week and he's always there when we need him.  We rely on Kim for all of our maintenance needs when it comes to ac/boiler."
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Recommended by100%of homeowners
Avatar for Spengler Plumbing, Heating and Cooling
Spengler Plumbing, Heating and Cooling
3.8(
75
)

Serving O Fallon, IL and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"The installation itself was very good.  I noticed the old tank leaking at 2:00pm Tuesday - was replaced by 2:00pm Wednesday.  They came out quickly to provide a bid and settled on Spengler that night and they were here at 8:30am the next morning.  The installer was friendly and considerate - top notch.  The only knock will be the salesman himself - a bit high pressure not a big deal because we knew we were going to use them after the research we had done.  He was here for nearly 3 hours looking things over then writing his bid then discussing with us his bid then sitting in his truck while we reviewed the bid then finally signing the contract.  The most disappointing was the discussing about their calendar - he wanted to be sure my wife knew which month he was "featured" - really - cmon man!
"
Recommended by68%of homeowners
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Install Boiler questions, answered by experts

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

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.

Radiators are a popular home heating choice in older homes, but they are becoming less common in new-construction homes. According to a 2022 report by Elements Visual Capitalist, only around 1.3% of new single-family homes have radiators and similar heating systems, such as baseboard heating.

While they may not be as popular as they once were, radiators today come with more energy-efficient features that can make them practical for modern homeowners.

Depending on the size of your home and system, as well as any upgrades or add-ons you choose, it may take between three and five days to completely replace an existing HVAC system from start to finish. Your contractor should be able to give you an estimate before they begin the actual replacement.

Yes, most municipalities require a permit for propane boiler installation to ensure safety and code compliance. Permit fees vary by location and are often included in your installer’s quote, as they’ll handle the permitting process. Ensure that you always check local regulations before starting your project to avoid fines or delays.

The O Fallon, IL homeowners’ guide to boiler installation services

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