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Top-Rated Tankless water heater installers in Cottage Grove - Updated Nov 2026

Avatar for Water Heaters Now, Inc.
Water Heaters Now, Inc.
4.7(
90
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Gabe came by and viewed the utility room and listened while I explained what I hoped to accomplish - in order of priority: increase space in utility room, replace 15 year old water heater and non-functional softener and address some plumbing issues (pin hole gas valve leak). He took pictures and brought them back to his team to discuss and called that very evening to discuss possibilities. I had a talk with Nate who was stronger in the softener and technical aspects the next day and we discussed possible solutions. In the end, we decided that the more expensive option of a tankless (we had considered a tankless years prior as well with them and a competitor) was the more cost-effective solution. I was also very pleased with the professional, friendly and efficient installation service. Clean and quiet (within reason; they did drill a couple of holes through our brick wall), quick and considerate (the broke a part of my washing machine sitting the process so ordered a replacement part right away and they will come and install tomorrow)"
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+7

Response time10 hrs
Recommended by91%of homeowners
Avatar for Pure Mechanical
Pure Mechanical
5.0(
24
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"They were excellent to work with and straightforward with pricing and helped me get my hot water heater up and running. This was to get my existing water heater up and running for now not install a new one like the caption says."
Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Aquarius Home Services
Aquarius Home Services
4.6(
260
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"Diagnosed and fixed a complex problem with our boiler and water heater on an emergency call basis. Nicholas was professional, friendly and tireless in solving our issue. He is a great ambassador and asset to his company. Highly recommended."
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Our Team
Response time12 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Randy's Electric & Plumbing
Randy's Electric & Plumbing
4.6(
2,952
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"I left a previous review after Mike with Randy's Electric came out to look at the job I wanted completed. That went great and I stated that if I went forward with the project I would hire him. Well, I went forward with the project and could not be happier. Everything went smooth on the date of installation. After discussing the location of the plug in site Mike thought the best location would be in a spot which required him to do extra wiring but there was no change in cost. He was excellent at explaining what he was doing and answering my questions. He even took the time to test everything with the generator hooked up to the transfer switch to make sure we everything worked properly. I have more electrical projects coming up and will definitely be hiring Mike at Randy's Electric. I recommend you do too! Oh and a really great perk is that Randy's Electric offers "same as cash" financing. I applied ahead of the start date and the process was super quick and easy. That really helped out."
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+10

Response time11 hrs
Response rate100%
15 neighbors recently requested a quote
Avatar for Southsota Benjamin Franklin Plumbing
Southsota Benjamin Franklin Plumbing
4.9(
12
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"They responded quickly to my request. Came in next day, quoted me a price and completed job. Removing corroded facets on laundry tub and replacing. Bathtub/shower facet, piping replacement . Now all the water is flowing through the shower head. Oakly did a excellent job, was friendly, quick and would request again for future projects."
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
56 neighbors recently requested a quote
Avatar for Cornerstone Plumbing LLC
Cornerstone Plumbing LLC
5.0(
1
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details. We look forward to building a lasting relationship and guarantee your satisfaction!

1 neighbors recently requested a quote
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