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Top-Rated Water heater installers and replacers in Knoxville - Updated Nov 2026

Avatar for The Water Heater Guys LLC
The Water Heater Guys LLC
5.0(
7
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

We specialize in water heater installations only. Having a specific focus allows us to do the best possible job, for lower costs to you (30-40% lower than our competitors), without compromising on quality. Our unique business model allows for instant quotes online or over the phone without additional visits. Book immediately after receiving your quote without giant time windows ruining your day and get back up and running quickly.

Gas Water Heater Install
Gas Water Heater Install
Gas Water Heater Install
Electric Water Heater
3 neighbors recently requested a quote
Avatar for Mr. Rooter Plumbing
Mr. Rooter Plumbing
4.3(
523
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"I had a tankless water heater installed but needed the gas line to be dug from the other side of the house for it to be connected. The job was complicated but Luke and his crew from Mr. Rooter did a great job! I would totally hire them again for any plumbing needs."
Install New Drains
Install New Drains
Install New Drains
Install New Drains
Install New Drains

+49

7 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for American Mechanical Services, LLC
American Mechanical Services, LLC
5.0(
29
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 1991

Free estimates

Warranties offered

"Wayne Was outstanding in every way. Fast service, great customer service, Had our Leaking water heater out and new replacement water heater in the same day!! Very friendly, and easy to work with. We have already used him in the past and had a great experience, and this time was no different. Would not hesitate to recommend to anybody. You definitely wonâ t be disappointed."
Hvac
Install
Install
Hvac
Hvac

+3

Response time6 hrs
Response rate100%
Recommended by76%of homeowners
Avatar for Alfco Plumbing
Alfco Plumbing
5.0(
39
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Seem like an honest company. Came out to replace the faucet that another plumbing company installed that wouldnâ t connect to my hose. It was not the correct one. Fast response and great quality work. Would definitely hire again and recommend."
Garbage Disposal Installed
Response time1 day
Recommended by86%of homeowners
Avatar for Winkle's Plumbing
Winkle's Plumbing
4.3(
84
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Jon did a timely, quick, thorough job. And this, after hours. Had he not fixed us up after the workday ended as he did, we would have either been without water overnight or paid our water company to spill 3 gallons per minute down our street. Get Winkle’s Plumbing whenever you can. They’r grand."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time1 day
2 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Hiller Plumbing, Heating, Cooling, & Electrical
Hiller Plumbing, Heating, Cooling, & Electrical
4.5(
38
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Credit card accepted

Hiller Plumbing, Heating, Cooling, & Electrical, established in 1990, stands for quality and reliability. With our 'Happy You'll Be or the Service is Free' guarantee, we are dedicated to customer satisfaction in Memphis, TN and the surrounding communities. Our plumbers provide emergency repairs, sewer line service, and expert installation or repair of water heaters. Our HVAC specialists ensure your comfort with preventative maintenance, air conditioning and furnace repairs, for year-round comfort. Our licensed and insured electricians offer prompt emergency response, custom upgrades, and safe, thorough electrical fixes for both residential and commercial properties. Hiller is your trusted provider for all your home service needs.

My jobs
My jobs
My jobs
My jobs
My jobs

+10

17 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Tennessee Standard Plumbing
Tennessee Standard Plumbing
4.7(
219
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 2019

Warranties offered

Small jobs welcome

"Very willing to help me even though they were booked up. I had my water heater die and start leaking. I m a new widow and they responded quickly to my obvious distress by working late to access the situation, then working me into the schedule the next day to replace my water heater. Thank you Kelton and John!"
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Recent Plumbing Projects
Recent Plumbing Projects
Recent Plumbing Projects

+225

Response time9 hrs
Response rate89%
163 neighbors recently requested a quote
Avatar for SMK Plumbing, LLC
SMK Plumbing, LLC
5.0(
10
)
Water Heater - Install or Replace

Serving Knoxville, TN and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"SMK plumbing did a great job for me with a whole house water re-plumbing & main water line from the street. The team was efficient, professional, and polite. Job was started and completed in one day. They even moved the whole house shut off and pressure valve to a very easy to get to location."
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel

+15

Response time11 hrs
11 neighbors recently requested a quote
Recommended by10%of homeowners
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