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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)"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+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 Comfort by Design
Comfort by Design
4.6(
78
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved (Corporate)

In business since 1991

Free estimates

Emergency services offered

"After reading all of the horror stories people tell about HVAC companies, I feel a little out of place writing a raving positive review about the company I do business with. From the call to schedule a service to the salesperson helping us decide which stove best fits our needs to the technicians who install or service our equipment, every contact with Comfort by Design is like living in a commercial where everything goes right. The company always lives by its quotes, the technicians always go beyond the expected, and for the first time in my life I am not tempted to do the work myself to avoid the hassle and disappointment when the work isn't done well, quickly, or for the price I expected. If they keep this up, I won't know how to do anything for myself in a couple of years."
Solar Panel Installation
Geothermal Efficiency
Replace Wood Burning Fireplaces with a Gas
Solar Panel Installation
Don’t let winter catch you unprepared. Ensure your furnace is ready with expert maintenance and repairs.

+11

28 neighbors recently requested a quote
Recommended by88%of homeowners
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 McQuillan Home Services LLC
McQuillan Home Services LLC
4.0(
504
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 1883

Emergency services offered

Warranties offered

"Know that if you do the tankless water heater there needs an outlet near by to power the digital display and condensation pump. ISO know they will send an electrician and that cost is separate"
McQuillan Furnace Installation
McQuillan Furnace Installation
Boiler Install 1
Boiler Install 2
Boiler Install 3

+20

Response time1 day
Response rate89%
59 neighbors recently requested a quote
Avatar for The Pleasant Plumber Inc.
The Pleasant Plumber Inc.
4.9(
10
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

In business since 1990

Emergency services offered

Warranties offered

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with. \n\nCall us today you'll be pleased you did. Thank you

Kitchen Drain
Clogged Tub
Video Inspection
Sewer Backup
106 neighbors recently requested a quote
Avatar for Today's Plumbing
Today's Plumbing
5.0(
6
)
Tankless Water Heater - Install

Serving Cottage Grove, MN and surrounding areas

Approved

Emergency services offered

Credit card accepted

Offers commercial services

At Today?s Drains Cleaning & Service, we provide reliable, professional drain solutions for homeowners, businesses, and multi-family properties across the area. Our team specializes in main line cleaning, branch line cleaning, sewer camera inspections, descale cleaning, and slab leak detection?giving you fast answers and long-lasting results. Whether you?re dealing with a slow drain, recurring backup, or a hidden plumbing issue, we use advanced equipment and proven techniques to restore your system quickly and prevent future problems. Count on us for honest service, clear communication, and dependable drain experts you can trust.

Toilet Unclogging
Sink Drain Cleaning
Show Drain Cleaning
Prepping for install
New toilet insalled

+6

6 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
Showing 1-10 of 47

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