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Best boiler installation pros near Waterloo, IL

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  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon141
    Verified boiler installation services reviews

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

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

Serving Waterloo, 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%
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 Waterloo, IL and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"The boiler was fairly new, but had never been serviced. The workman came on Saturday in response to an emergency call, and fixed the boiler as well as performed basic maintenance which badly needed to be done. He didn't bleed the radiators, so I will be contacting the company to make arrangements to have that techs do this as well. I would consider relying on Vitt's for routine maintenance of our heating system, as well as replacement of our water heater."
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 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 Waterloo, IL and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Jeremiah was excellent.  He came to my house on a Saturday to accommodate my schedule, gave me a accurate and beyond reasonable quote and scheduled/completed the work within a week.  During the install we ran into several problems which he took care of quickly without any additional cost/fuss.  He is an excellent person to work with and took care of me from start to finish.  Can't recommend highly enough; he's my go-to heating/AC guy from here on out.  He also does plumbing so... he can be your go-to person too for most issues!  Not sure where the very few negative reviews come from but anyone who isn't a pain in the rear will appreciate Jeremiah immensely.  Thanks again!
"
Working hard for you.
We do plumbing too
Look for our truck
Recommended by84%of homeowners
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 Waterloo, IL and surrounding areas

Credit card accepted

"Our AC stopped working the day before Father's Day. Jeramy came out, not only on a Sunday, but Father's Day! He quickly realized out AC had a freon leak. He quickly fixed the leak and added freon. He was in and out in a very timely manner! He did not charge us for a service call, even though it was a weekend! We would definitely use Jeramy again and recommend him to anyone!"
Recommended by92%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 Waterloo, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"We own a home-based business which relies heavily on our computers operating efficiently. We have had a service contract with another computer repair business for several years. Recently when we were having problems with our computers, we tried contacting our service contractor multiple times. He never responded. Feeling frustrated, I contacted James at North Alabama Technical Services and explained our situation. He instantly came to our rescue. He "cleaned-up" our computers and took care of all the problems we were experiencing. He went above and beyond to help us in our dire time of need. We would strongly recommend James and his company for computer service needs. We have now retained him on a service contract and are looking forward to working with him in the future."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
Avatar for Spengler Plumbing, Heating and Cooling
Spengler Plumbing, Heating and Cooling
3.8(
75
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Waterloo, IL and surrounding areas

In business since 1971

Emergency services offered

Credit card accepted

"My experience with the Spengler Company was great.  Colby arrived at my house on time and then proceeded to perform the cleaning of my air conditioning unit.  He found that our refrigerant was low so he filled that up.  And he also changed our air filter for FREE!  He then gave me six options to replace the water heater in our home.  It was over 20 years old and had been leaking on the floor.  We selected the second option and he called it in and our water heater was changed out the same day!  WOW.  What service!  We couldn't be happier.
"
Recommended by68%of homeowners
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Install Boiler FAQs, answered by experts

The best time to buy home heating oil is in the summer when the demand is lowest, as the prices are usually lower. However, waiting until the summer to buy is often unavoidable unless you install a separate storage tank. If you have the space for a second tank, you can expect to pay between $1,000 and $4,000 for the oil tank replacement or installation, depending on the capacity and location. You could quickly recuperate these costs, though, by stocking up on heating oil in the summer and avoiding deliveries in the winter when prices are highest.

While you’ll pay more upfront for a brand-new HVAC unit, you can save money in the long run. Here’s how to save on your new HVAC system:

  • When purchasing a high-efficiency system, your energy bills will be lower in the future.

  • You may be eligible for special offers from your local energy company.

  • Depending on the system, you may be eligible for HVAC rebates and tax credits.

  • Choose to replace your air conditioning unit and furnace simultaneously to save on labor and installation costs. 

No, there isn’t always water in radiators. In a one-pipe system, water is constantly circulating from the boiler to the radiators and back. In a two-pipe system, water travels through two separate channels: one that goes to your radiators and one that returns back to the boiler so it can heat up again.

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.

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

The Waterloo, IL homeowners’ guide to boiler installation services

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