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

Avatar for SwiftPro Heating, Cooling & Plumbing
SwiftPro Heating, Cooling & Plumbing
4.6(
117
)
Tankless Water Heater - Install

Serving Ashburn, 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 Fred's Plumbing & Heating
Fred's Plumbing & Heating
5.0(
22
)
Tankless Water Heater - Install

Serving Ashburn, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"From start to finish, Freddy was professional, efficient, and incredibly knowledgeable. The installation was smooth, and the new water heater works perfectly. Freddy even took the time to explain everything and ensured that we were completely satisfied. Highly recommend his services to anyone in need!"
Inspection report
Electrical Project
Additional Photos
Additional Photos
Additional Photos

+16

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Appleton Campbell
Appleton Campbell
4.6(
339
)
Tankless Water Heater - Install

Serving Ashburn, 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%
8 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 Ashburn, VA and surrounding areas

Approved

In business since 1996

Emergency services offered

Credit card accepted

"Great. The contractor from Jimmy Gusky arrived on time and within 45 minutes had provided a full inspection and determined the unit was fine and had simply malfunctioned temporarily during several extremely hot day.s. So this saved me many thousands of dollars. Great experience."
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 Ashburn, 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 Ashburn, VA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Everything seems to have been done extremely well. The guys doing the work are the ones who showed up (right on time) to do the quote. They gave me EIGHT different options for the work I was looking to have done. Understandably, they tried to get me to do more, since they were already there, but there was no pressure or expectation of me agreeing to some of the things I could very easily do myself. They also did not do the typical contractor thing of... "if you agree and sign now, you can get an extra 10% off.' They told me if I agreed now, I'd get priority scheduling. But they were out to do the work within, I believe, 2 days so I don't know how you get much more priority than that. They also did a "free" whole home electrical inspection where they checked all our outlets. Understand they were trying to find more work :) but it didn't cost me anything other than a little time and allowing them to walk around the house to check the outlets. The only issue I did had/have is that I haven't been able to schedule the inspection for the work and that is really mostly on me. I'm sure if I called, they'd help me get that scheduled. Just haven't gotten around to it. The Beacon team's communication was terrific. Workers showed up on time, worked hard and completed in the time (a little less) than they said. Regarding value: I did receive a quote for less from another electrician but the warranty wasn't really comparable to what Beacon offers. And, I also hired them at the same time to do the installation of a new tankless water heater. Since I hired them for both and had a quote for a little less, they worked with me on the price and brought the electrical work price down a bit, which I very much appreciated. They also did a great job on the water heater. They offer no interest for 12 months financing through GreenSky and I was able to combine the two jobs into one GreenSky account so another plus. Overall, this was the best contractor experience I've had in a VERY long time and will definitely reach out to them next time I need work done which they do."
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%
563 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 Ashburn, 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 McCarthy Services MD
McCarthy Services MD
4.2(
384
)
Tankless Water Heater - Install

Serving Ashburn, VA and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Emergency services offered

"Mr. Brian Langford made all the arrangements with the installation of our gas hot water heater from Lowe's via McCarthy plumbing. He was extremely helpful,patient, professional and available to answer all questions. Due to his approach to his work, we will be working with both companies in the future. Only concern I have is the warranty between Lowe's and AO Smith Hot water heaters. Once the heater is installed, Lowe's severs ties. If there is a problem with the hot water heater, you cannot return it to Lowe's although it was purchased through them, this is clearly stated on the Hot water heater in bold writing."
Installing a new A/C system.
Recommended by87%of homeowners
Avatar for First Choice Plumbing & Remodeling
First Choice Plumbing & Remodeling
4.8(
128
)
Tankless Water Heater - Install

Serving Ashburn, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Woke up to no water and quickly figured it was a bad well pump. Called Tommy at 6:15 am and he came over to access the problem. Went to plumbing supply and gave us options on pumps. Installed same day and water is running. Very knowledgable and quick to respond!"
Response time5 hrs
Response rate92%
12 neighbors recently requested a quote
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