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Best boiler installation pros near Greendale, WI

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TRUSTED BY GREENDALE, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.9k+
    Verified boiler installation services reviews

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

Avatar for KETTLE MORAINE HEATING & AIR CONDITIONING LLC
KETTLE MORAINE HEATING & AIR CONDITIONING LLC
4.8(
229
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greendale, WI and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"KM Heating and Air was truly exceptional in every way single way. Miguel came to quote repairing our existing furnace and quote a new furnace. He was knowledgeable, friendly and very low pressure. We ended up replacing our 11 year old furnace with a new Lennox (I wish we would have knew about KM then). We were offered a fair price for a dual stage furnace and decided to go with their maintenance program as well. When Miquel left, we brought up my garbage cans, which was way above and beyond what we’re accustomed to. Jordan came for installation and was very professional, super hard working and took the time to chat with me about the Brewers before he left. The installation looks amazing, the furnace is whisper quiet and doesn’t run nearly as often. If you’re replacing or repairing your furnace or AC (our central air is also from KM) you would be foolish to not at least hear what they have to say. We’re a customer for life."
Radiant In floor Heating
Furnace Replacement with Humidifier
Additional Photos
Additional Photos
Additional Photos

+8

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Droegkamp Furnace Co
Droegkamp Furnace Co
4.8(
575
)
Boiler or Radiator Heating System - Install or ReplaceGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Greendale, WI and surrounding areas

Approved

In business since 1877

Free estimates

Emergency services offered

"very impressed----joe the estimator was very knowledgeable and not pushy-----gary the installer was super and very careful to clean up every little bit of dirt---mike who did the furnace tune was super ------------how often do you have a company so honest that when you ask to have a 20 year old furnace checked out----they do a very detailed check and show the details and they don't try to ram all sorts of repairs at you--they actually said everything is fine for now ( guess who I'll call when I need one }--they were right on par with 2 other companies I called for estimates----awesome job"
Response time1 day
Response rate99%
14 neighbors recently requested a quote
Burant Heating And Air Conditioning
4.5(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greendale, WI and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Swimmingly. I interviewed quite a number of HVAC companies for this job by sending out an RPF (Request for Proposal), and Bob Mamayek was unquestionably the most thorough in his on-site evaluation. Installation crew was fantastic. This is a small shop, and it was a true pleasure to have a team of regular guys just getting the job done. I recommend them without reservation. I almost gave them a B for responsiveness because Bob doesn't do a lot of email, but I realized while typing that this would be completely unfair, for two reasons. A) Bob might not respond to email with email, but he did always respond with a phone call. Frankly, that is better on many counts. B) This ignores the amazing response to my RPF, which was both timely and thorough. So, really, this says more about my email-centric life than Mamayek's responsiveness."
Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Southport Plumbing, Heating & Cooling
Southport Plumbing, Heating & Cooling
5.0(
14
)
Gas Boiler or Radiator Heating System - Install - For Business

Serving Greendale, WI and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"Very pleased with our new air conditioner installation. The salesman was very nice and explained everything to my satisfaction. The installers were efficient and knowledgeable as well. They showed up exactly on time and were finished earlier than I expected. Work areas were cleaned up, inside and out. Not even any metal shavings in the grass where the new ducting was cut. One of the nice gentlemen even explained the new thermostat they installed. I highly recommend Southport Home Services."
Air Conditioner
Furnace System
Outdoor Heat Pump
Garage Heat Pump
Furnace Install

+2

20 neighbors recently requested a quote
Avatar for Guardian Heating and Cooling, LLC
Guardian Heating and Cooling, LLC
4.7(
82
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Greendale, WI and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I would give Guardian Heating and Cooling 10 stars if there were a way to do that! These guys are outstanding! They showed up, after hours, to determine exactly what was causing our problem. We had already suspected it was time to replace our boiler since it had been more than 25 years old. Steve confirmed our thoughts about replacement. He quoted a fair price and scheduled a time to come back. He showed up early with the new boiler and within hours after their arrival, we were up and running. We had a little hiccup the next day, as things seemed to be working too well. We called Steve and he was at our house in minutes. We already wondered if the thermostat wasn't able to keep up with the new boiler set up. 30 minutes later, we had a new thermostat and everything was working properly. Steve and Adam were friendly and professional. Our basement was cleaner when they left than before they arrived. Their prices were reasonable and there were no surprises, price wise. We were given a quote and that was what we paid. It's refreshing to find people like these guys!"
Boilers
Boilers
Boilers
Garage infloor
Sun Room

+4

Response time7 hrs
13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for A Better Way Heating and Cooling LLC
A Better Way Heating and Cooling LLC
5.0(
31
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greendale, WI and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Better Way was on time and explained what they needed to do. I needed to have a new wire installed from thermostat to furnace. They moved my ceiling tiles in the basement, ran the wire, replaced my tiles and hooked up my new thermostat. They programed the new thermostat and walked me through registering it online. I never had a wifi thermostat before. Process was smooth and everything works great. Will use them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by100%of homeowners
Avatar for A-1 Milwaukee Heating And Cooling
A-1 Milwaukee Heating And Cooling
4.9(
34
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greendale, WI and surrounding areas

In business since 1997

Free estimates

Emergency services offered

"My old central air unit went out and Mike (the owner) gave a quick response to my service call. I decided to purchase new central air. Mike and his crew member did an excellent job with the new installation. They were very hardworking and it was done in no time. Mike goes the extra mile, is very professional, and wonderful to work with."
Mlk
New Installation
Twin Installation
New Installation
Twin System

+40

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

Propane is more cost-efficient than natural gas on a per-unit basis because it produces twice as much heat energy as an equivalent amount of natural gas. But propane is not ideal if you already have a gas line installed. The best choice for your home depends on the efficiency of your appliances and the amount of installation required of your fuel choice.

A furnace is a big unit where gas, heating oil, or electricity heats the air. The warmed air is then pushed back out through ducts and vents. 

A boiler uses electricity, heating oil, or gas to heat water that is pushed into the room through a radiator. This is one of the oldest and most effective ways to heat a house, but radiators can also be unsightly and leave hot and cold spots in the room.

Heat pumps use a refrigerant to move heat from outside into the house and return it to the room through ducts and vents.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

Installation costs range from $4,000 to $12,000, depending on unit size, efficiency rating, and labor.

You can save money on heating oil through a combination of improving home efficiency and smart purchasing strategies.

Home Efficiency and Usage:

  • Improve Insulation: Ensure your home, especially the basement and attic, is well-insulated and sealed against drafts to prevent heat leakage.

  • Manage Your Thermostat: Use a properly calibrated and programmable thermostat. Lower the temperature by a few degrees, particularly when you are away from home or asleep.

Purchasing Strategies:

  • Buy in the Off-Season: Order heating oil during the summer months when prices are generally at their lowest. This strategy is most effective if you have a large primary tank or a separate storage tank to accommodate bulk deliveries.

  • Consider a Delivery Contract: Some companies offer contracts with a set price for the term. This can lead to savings if market prices for oil increase, but you might pay more if prices drop.

The Greendale, WI homeowners’ guide to boiler installation services

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