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Top-Rated Tankless water heater installers in Nashotah - Updated Nov 2026

Avatar for Jensen Plumbing LLC
Jensen Plumbing LLC
4.7(
32
)
Tankless Water Heater - Install

Serving Nashotah, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Warranties offered

Small jobs welcome

"I had a water heater that needed immediate replacing. Jensen Plumbing came out the same day I called, plumber was very professional, he was updating me the entire repair, it was quickly done and he gave me some pointers in case there are any issues in the future. I Highly recommend Jensen Plumbing"
Rough Plumbing
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+30

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Harker Heating & Cooling
Harker Heating & Cooling
4.6(
213
)
Tankless Water Heater - Install

Serving Nashotah, 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 Mr. Holland's Home Services LLC
Mr. Holland's Home Services LLC
4.3(
252
)
Tankless Water Heater - Install

Serving Nashotah, WI and surrounding areas

In business since 1997

Emergency services offered

Credit card accepted

"Tech was punctual and friendly. Diagnosed the issue with the switches and outlets. Replaced half of the switches and the outlet repairing the problem. Unfortunately the new switches and outlet did not match the previous color leaving me with 2 white switches and two almond switches in the same bank of switches. Tech told me they could not make them all match because they don’t carry almond color switches. Completed after work survey and was contacted by customer service who stated that they would have a tech come back to the house and install the new white switch that i had purchased due to the inconvenience. New switch was installed without issue."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

Recommended by81%of homeowners
Badgerland Plumbing, LLC
4.2(
28
)
Tankless Water Heater - Install

Serving Nashotah, WI and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"We needed someone to come out to find the cause of the horrible sewage odor from our mound system. I went onto Home Advisor and found Badgerland Plumbing and called at 3:40 in the afternoon but figured late afternoon on a Friday would not be a good thing. As soon as I explained to Jared what my concern was, he said he would be out in 25 minutes, showed up on time and worked until he could assure us we were in no danger. He checked everything and replaced a leaky water fixture in the basement that he felt was allowing odor from the new pump that was just installed in our mound system to enter the house. He explained everything he was doing, was courteous, friendly and asked that we call him the next day to let him know if the problem was resolved. We couldn't be happier and yes, I will hire them again. Thanks Home Advisor & Jared from Badgerland Plumbing."
Response time6 hrs
Recommended by100%of homeowners
Avatar for BLAU PLUMBING, INC.
BLAU PLUMBING, INC.
4.3(
58
)
Tankless Water Heater - Install

Serving Nashotah, WI and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"Mickey, our installer, was professional, knowledgeable and friendly. He even took time to help reattach the discharge hose when the installation was completed. I did find some small stones and debris in the corner after he left. Likely from the old sump pump. I chose Blau without doing a lot of comparison shopping. I asked for a breakdown of material costs and labor costs. But was told they only provide installed cost estimates. After some further research, I now feel I could have gotten a lower price elsewhere, but I am satisfied with my purchase. Cheapest is not always the best."
Plumbing Work
Plumbing Work
Plumbing Work
Plumbing Work
Plumbing Work

+12

Response time4 hrs
Recommended by85%of homeowners
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