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Best boiler installation pros near Beaver Dam, WI

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TRUSTED BY BEAVER DAM, WI HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon44
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Beaver Dam - Updated Nov 2026

Avatar for Harker Heating & Cooling
Harker Heating & Cooling
4.6(
213
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Beaver Dam, WI and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"Harker Heating And Cooling is the best HVAC contractor we have ever worked with in 40 years. Their web site proudly says they are an “honest company with Midwestern values.” That is absolutely true. Their representative provided in-depth advice, answered our questions. and returned our messages. Their techs were knowledgeable, professional, careful, and friendly. They were on time, on call, and on budget. The service they provided for us over the years could not be better. So when the time finally came to replace our old furnace and A/C we selected them. Unfortunately, they encountered many unexpected problems installing our new equipment. Many more than they had anticipated for the job. But their representative pledged to address every one of them no matter how hard it was for them or how much of their time it took. And that is exactly what they did. No quibbling and no questions. They got the job done right. If you want an honest family contractor who stands behind what they do, and lives by those Midwestern values, then this is the company to hire. You will be glad you did. Doug and Margie King Mount Horeb, Wisconsin"
87 W. Beltline Hwy
Carrier Distinguished Dealer Logo
Star of Madison Award
Recommended by89%of homeowners
Avatar for JB Mechanical, LLC
JB Mechanical, LLC
4.9(
30
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Beaver Dam, WI and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"I had lost heat to my boiler late one night in February. With my family gathered around our fireplace in the living room & heat dropping on one of the coldest nights of the year, I was concerned. JB Mechanical responded first thing in the morning. The technician did a nice job of diagnosing the problem. After a few hours we had our boiler up in running. They also worked with me on the price, adjusting accordingly. A job well done by Patrick, the technician."
Response time2 days
10 neighbors recently requested a quote
Recommended by93%of homeowners
Nordic Air Heating and Cooling
5.0(
9
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Beaver Dam, WI and surrounding areas

We are a growing fast paced southeastern WI locally owned HVAC company that provides skilled and professional work with over 20 years experience in the Heating and Cooling industry we do it all from Furnace and AC tune ups to complete new home HVAC system designs! Not only is the quality of work guaranteed to exceed expectations but the cost of our work is also guaranteed to be the best in the industry with our unique pricing structure that under cuts the competition!\n

Recommended by100%of homeowners
Sears Heating and Cooling - Milwaukee
4.3(
23
)
Boiler or Radiator Heating System - Install or ReplaceGas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Beaver Dam, WI and surrounding areas

In business since 1893

Free estimates

Warranties offered

"Very prefessional and thorough. Left my place clean after the install, and even loaned me some goo-be-gone from their toolbox for a project that I was working on while they were installing my furnace. They reviewed what they did at the end, and gave me a card so that I could call with any issues. Would highly recommend Sears and their contractors."
Recommended by89%of homeowners
Avatar for Arctic Air Heating, Cooling, & Refrigeration
Arctic Air Heating, Cooling, & Refrigeration
4.6(
11
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Beaver Dam, WI and surrounding areas

In business since 1959

Free estimates

Emergency services offered

"Awesome! We have never felt more comfortable and satisfied hiring a contractor! Brian came out within a day or two to look over the project, and then within another few days had a written quote! This was a huge project, and they handled it like no one else could. We interviewed 3 other companies and hands down, chose Arctic Air. Within a weeks time, they had removed 2- 250 gallon oil tanks, filled with oil mind you, took out the old oil furnace, replaced with a new gas furnace, and installed air conditioning! Not an easy task on a 125 year old home! Will definitely recommend to everyone!"
Recommended by90%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 Beaver Dam, WI and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Jim did a great job. He quickly assessed the problem and then took our unit with him to work on it more. When he got back to us, the fix would have cost more than it was worth. He gave us options for a new or refurbished PC. We felt the refurbished was a good deal and chose that. He came back and set that up and we are very happy with it. He then took a look at my laptop and again took it along. He tuned it up and installed a speed upgrade we wanted. Of course, we paid extra for the new unit and upgrades, but we thought the price was very fair. Jim seemed very knowledgeable and responsive. We will definitely call him again if we need any computer services."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Install Boiler FAQs, answered by experts

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.

DIY is not recommended due to safety risks and technical expertise required. Hire licensed professionals.

When winter rolls around, and you turn the heat on for the first time in a year, it’s normal to sense a light odor. This could smell a little like burning because some dust has gathered in the heating unit over the warm months and will fade away shortly after. However, there are some smells you should watch out for and take caution around: an egg-like sulfur smell or an electrical burn odor would indicate there’s something wrong. Turn it off and call a professional for maintenance as soon as possible. 

Costs depend on issue severity, parts needed, and labor rates.

Generally, an oil furnace is considered safer than a gas furnace for several reasons. While both types of furnaces can produce carbon monoxide, a leak in an oil furnace is easier to detect due to the smell. Oil furnaces also don't connect to a gas pipeline, which reduces the chance of a fuel leak. Most importantly, heating oil is not combustible, whereas natural gas is highly flammable. This means there is a much lower risk of combustion or explosion with an oil furnace. However, an oil furnace can still pose a fire hazard if it tips over.

The Beaver Dam, WI homeowners’ guide to boiler installation services

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