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TRUSTED BY SUMMIT, WI HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon51
    Verified water heater services reviews

Top-Rated Water heater pros in Summit - Updated Nov 2026

Avatar for Premier Water Heaters LLC
Premier Water Heaters LLC
5.0(
949
)
Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Summit, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"Joe and his team did an outstanding job installing our tankless water heater. They are knowledgeable, flexible, conscientious, professional, friendly, timely, and do outstanding work. I would highly recommend Premier Water Heaters for your water heater needs."
Response time4 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
165
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair

Serving Summit, WI and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Paul was very friendly and helpful. He explained how the toilet was leaking and other possible causes for the small pool of water near the water shutoff valve. This was a revisit from work earlier done which had a larger leak."
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

97 neighbors recently requested a quote
Recommended by89%of homeowners
Cardinal Heating & Air Conditioning
4.8(
164
)
Tankless Water Heater - RepairWater Heater - Install or ReplaceWater Heater - Repair or Service

Serving Summit, WI and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

Cardinal Heating, Cooling, Plumbing & Electric has provided full-service HVAC, plumbing, and electrical work to homes and businesses throughout the Madison area since 1984. Homeowners call us for furnace and air conditioner repair, water heater replacement, drain cleaning, and electrical panel upgrades, along with the everyday plumbing and electrical work every home needs. We take the time to listen to every customer and explain the options clearly, and our licensed technicians bring years of hands-on experience to routine maintenance, unexpected repairs, and full system installations alike. Call Cardinal today to schedule your free estimate.

Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

Recommended by90%of homeowners
Gans Plumbing
5.0(
1
)
Water Heater - Install or Replace

Serving Summit, WI and surrounding areas

Approved

In business since 2023

Credit card accepted

Offers commercial services

We are 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.

R S Plumbing Co
4.7(
45
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Summit, WI and surrounding areas

"I overfilled my garbage disposer!! My sink had 2 inches of water as a result of my trying a plunger to clear it. I called RS Plumbing at 4:45 in the afternoon and Steve came the next morning at 8:00.

He had me clear the area around the basement pipes in case the clog was more major than I hoped. He was able to clear the drain only in the kitchen area. He worked efficiently and had the drain running freely. I asked him to check the dishwasher hosing in case that was part of the blockage. I have had problems with that before.

RS Plumbing was prompt, competent, and overall good to work with."
Recommended by95%of homeowners
Avatar for Harker Heating & Cooling
Harker Heating & Cooling
4.6(
213
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Summit, WI and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"

We had our water heater go out last week.  We noticed it when we woke up to take showers before work.  I called a few places and ultimately chose to go with Harker because the receptionist told me they would be able to come out and assess the heater and replace it the same day.  Our water heater is about 7 years old, so we figured there would be a good chance that it would cost the same amount the replace the water heater as to just fix the older one, so that is why I verified with her that they could fix it the same day.

 

We have a new rescue dog that is not good around men, so my SO came home from work (I had already taken the day off work for this) and she took the dog away from the house so we didn?t disturb the men while they worked.  As we expected, there were a few parts that were bad on the water heater and the cost would be similar to repair or to replace.  He was done looking at the water around 2:00 and he told me someone would call me for a quote.  I was confused as I was under the impression that they would replace it that same day per the lady on the phone.  Apparently, that was not the case.  This guy wasn?t even the guy who would replace the unit, the guy who would replace the unit was busy and they didn?t have a replacement unit. I was very frustrated and mad?I chose Harker because I was told they could do it all in one day or we both wouldn?t have taken off work.  I could have just let my dog outside for a little while for him to look at the water heater.  I paid roughly $120 for this diagnostic test.

 

We then called to speak with a manager at Harker.  They tried to get someone to come back out that night and replace the water heater but were unable to.  They did have someone sent out first thing the next morning and took about $50 off the service call, which was appreciated but didn?t cover the amount of money we lost at work for missing part of both days.  This all could have been avoided by having their receptionist give accurate information.  There are a ton of places in Madison I could have called to have my water heater replaced and I chose Harker because I was told they could do it that same day and if they couldn't have replaced it that day, they should have said so and I would have made other arrangements. 



Update to Harkers repsonse:

At no time did they ever offer to have the heater replaced that evening for overtime rate or we would have easily paid it instead of taking more time off work.  We were told that they could try to get someone out that night but were unable to.  The only reason we okay'd them to come back the next morning is we needed it replaced as soon as possible.  We did not call later in the day-- it was still in the morning when we called.  And, obviously we know that you cannot carry all kinds of equipment around with you, but I was told that it would be replaced that night, so that is the fault of your receptionist to give me misinformation. They will try to write this so they sound like this was our fault for not knowing that they don't carry all the equipment, need licensed plumbers, etc., but we know exactly what was told to us on the phone and exactly how the situationw as handled and it was handled poorly.  We stand by our original reivew and will choose to use another company in the future. 


"
87 W. Beltline Hwy
Carrier Distinguished Dealer Logo
Star of Madison Award
Recommended by89%of homeowners
The Otter Plumber
5.0(
10
)
Water Heater - Repair or Service

Serving Summit, WI and surrounding areas

In business since 2023

"If I could give 10 stars, I would. My water heater started spewing out water at 5PM on an unsuspecting Wednesday evening. I called several local businesses that offered â 24 hourâ service, with no luck coming out that evening. However, I received a call around 7PM from Adam Langridge, the owner of Otter Plumber. He said he would be able to come out to my house by 8PM, which he did. He took a look at the water heater, and he said that I needed it replaced, which did not come as a big surprise considering the unit was over 12 years old. We discussed what options I had, and how to proceed with the replacement. Ultimately, I purchased a brand-new water heater the following day from a local hardware store, and he said that he would go pick it up and would install it the same day. He didnâ t even charge me for the evening house call. He picked up the unit in the afternoon, the following day, and installed the unit within 2 hours, having everything finished by 5PM. From start to finish, it took less than 24 hours to get a new water heater replaced!!! You cannot find a more reliable and efficient worker!!! I would hire Adam 10 out of 10 times without thinking about it twice. Thank you Otter!!!"
Response time40 mins
Response rate96%
Recommended by100%of homeowners
Showing 1-10 of 34
Water Heaters FAQs, answered by experts

You don’t have to replace expansion tanks at the same time as your hot water heater. You may be able to go six to 12 years or more before needing to replace your expansion tank. At $150 to $450, hot water heater expansion tanks are usually much more affordable than the cost of hot water tanks themselves, which average about $1,190.

Choosing between an electric water heater vs. a gas water heater comes down to personal preference. Overall, electric heaters are more energy efficient than their gas competitors. They’re also quieter to operate, take up less room, and don’t come with a risk of gas leaks. 

The downside is that electric water heaters cost more to operate than gas. They might also struggle to heat water fast enough for households that use large amounts of hot water. Lastly, a power outage could cause your electric water heater to stop working, whereas gas water heaters may still function.

Yes, you can convert a gas water heater to an electric one, but it is a complex process. You will need to ensure there is adequate power for the new electric unit, as they require more power than gas models. The project also involves safely closing off the gas lines and ventilation, and some cities may require a permit for the conversion. The cost can range from $1,500 to $4,100, depending on the installation scope, plumbing and electrical work, and the water heater model. For an accurate quote, it's best to contact a local professional. Also, be aware that your monthly utility bills may increase after the conversion, as natural gas is typically cheaper than electricity.

No. Expansion tanks must be installed on the supply side (where heated water flows out) of the boiler. There’s also a list of other requirements for most boilers, including being above the pressure relief valves, being on the inner side of any circulator, and more. Your installation manual should have more information on expansion tank installation requirements and what sort of tank the system is made for.

The amount of time it takes to replace an electric water heater will depend on the skill level of the individual who is replacing it. For example, if you replace it yourself–and you don’t have much experience–you can expect the project to take a full day. 

However, if you have a certified plumber or water heater contractor install your new water heater, it can take as little as 2 to 3 hours.

The Summit, WI homeowners’ guide to water heater services

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