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

Avatar for Fred's Plumbing & Heating
Fred's Plumbing & Heating
5.0(
22
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Fred's Plumbing installed two 50-gallon hot water heaters and expansion tanks and replaced an instant hot. His people were very skilled and workmanship showed it. Best plumber I have used in many years and will continue to use Fred's Plumbing. Fred was professional and the estimate which he gave me was the actual cost. I highly recommend Fred's Plumbing in Fairfax, VA."
Inspection report
Electrical Project
Additional Photos
Additional Photos
Additional Photos

+16

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for SwiftPro Heating, Cooling & Plumbing
SwiftPro Heating, Cooling & Plumbing
4.6(
117
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"SwiftPro was excellent. When our hot water heater went out (at nearly 20 years old, we were neither upset nor surprised!) we reached out to a few places but SwiftPro was the most responsive and had the price was fair. Zabi, the service technician was fantastic. I can’t say enough good things about him. He was prompt, provided excellent communication, took meticulous care with the work and work space, and was just a great person to talk to. The install went great and there was no aggressive sales tactics or upselling. Just a genuine cut and dry hot water heater removal and install experience. I highly recommend SwiftPro. Thanks Zabi!"
Tri-County Feeds
Trane Odyssey unit
Attic air handler
Old Armstrong AC
R-22 data plate

+29

Response time4 hrs
Response rate100%
Recommended by43%of homeowners
Avatar for Appleton Campbell
Appleton Campbell
4.6(
339
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"The company technicians, Steven, James and Zack were very professional and competent. They did excellent job in both removing the old unit and installing the new one. In addition to this job, we have used Appleton Campbell for several projects over the past couple of years, to include, installing a back up propane generator, installing replacement electrical lighting, and replacing a hot water heater. The company and their personal, to include both field and office individuals, were very competent and courteous. We highly recommend this company to other individuals."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time11 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Jimmy Gusky Heating & Air LLC
Jimmy Gusky Heating & Air LLC
4.3(
374
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 1996

Emergency services offered

Credit card accepted

"Excellent. Two separate teams came; one for AC and Furnace; second for Tankless hot water heater; Minor toilet repair also done at no extra charge, including a follow up service call to install new toilet flush handle, also at no charge."
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
4 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for DB's Plumbing & Drain
DB's Plumbing & Drain
4.8(
194
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"I can't say enough about DB's Plumbing. I called in the morning, had a return call within hours and they were at my house that night. 24 hours later, the new hot water heater was installed! Price beat all others. Duncan was professional and knew exactly what he was doing. DB Plumbing is now my GO TO PLUMBER!"
Sewer replacement Inside and out
Team at our new locations ribbon cutting
Expansion tank with new venting
New pipe continued
Whole house re pipe

+212

Response time12 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Beacon Home Services, Inc.
Beacon Home Services, Inc.
4.6(
2,092
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Jamie our plumber arrived right on time & very efficiently performed three jobs for us. These included replacing a kitchen disposal, installing a vanity water faucet, flushing the water heater. He patiently explained each task and stayed until all were completed. We were so pleased we've entered into a service contract with Beacon Home Services."
Beacon Home Services - Electric, Plumbing, Drains
New water heater replacement
Our Team
Electrician - Installing 2 new electrical panels
Beacon Home Services - Electrician

+31

Response time30 mins
Response rate100%
583 neighbors recently requested a quote
Avatar for Appleton Campbell, Inc.
Appleton Campbell, Inc.
4.3(
61
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"WT was great! Diagnosed the problem pretty quickly and fixed the issue of water pressure. Went an extra step and took samples of water. Great to have an experienced friendly person come out on a Friday afternoon which was less than 24 hours from my call."
Happy HVAC Technician
Electrician gathering parts
Checking in the equipment needed for the day
Happy Electricians
We make our own sheet metal!

+9

Response time9 hrs
Response rate94%
195 neighbors recently requested a quote
Avatar for Snell Heating & Air Conditioning, LLC
Snell Heating & Air Conditioning, LLC
4.6(
255
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Had a surprise when workmen showed up unannounced the day after I signed the contract. Once we rescheduled the installation date and time, things went very smoothly. The installation of the furnace, AC, and hot water heater took less than a day. I'm very happy with the results."
Snell Plumber Kitchen
Snell Tech Water Heater
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Home Service Pros
Home Service Pros
4.9(
14
)
Tankless Water Heater - Install

Serving Fairfax, VA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Albert and Joseph provided truly exceptional service during their visit to my home. Albert first installed my kitchen faucet and food processor, and then, both came back to install a water heater with remarkable professionalism, care, and efficiency. From the moment they arrived, they were responsive, respectful, and incredibly warm. They took the time to explain my options, helped me feel at ease, and ensured I understood why the water heater they recommended was the best choice on the market. On top of that, they went above and beyond by fixing a separate issue in my shower without hesitation. Their dedication, expertise, and kindness made the entire experience outstanding. I am deeply grateful for their work and highly recommend them."
Completed sewer lateral repair.
Completed sewer lateral replacement that required a VDOT street cut.
Excavating sewer lateral for repair. Trust the process.
Completed sewer lateral installation.
Installation of new gas water heater.

+6

Recommended by16%of homeowners
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Showing 1-10 of 236

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