200+ installs.
4.9 stars. Every review.

We publish every review we get — even the 4-stars. Below is a sample of 12 recent reviews from across Montgomery County. Each is from a real homeowner who gave us permission to share their install details.

4.9
Google avg
200+
Reviews
97%
5-star
0
Callbacks
★★★★★

"Three quotes from other Montgomery County plumbers ranged from $4,200 to $7,800 for the same scope. DMV Tankless told me $5,295 on their website. That's what I paid. Showed up Tuesday, done by 3pm."

M
Michael T.
Potomac · 20854
Navien NPE-240A2 · March 2026
★★★★★

"What I appreciated most: they actually pulled the Montgomery County permit. Previous contractor didn't, and I had issues when I tried to refinance. DMV Tankless handled everything — inspection, sign-off, rebate paperwork."

K
Kristen W.
Gaithersburg · 20878
Rinnai RX160iN · February 2026
★★★★★

"My family of six was running out of hot water daily with the old 50-gal tank. They installed the Navien 240A2 with recirculation. Three showers going, dishwasher running, nothing drops. Should have done this years ago."

R
Ravi S.
Bethesda · 20817
Navien NPE-240A2 · March 2026
★★★★★

"Our tank failed on a Sunday night. DMV Tankless was the only place that would actually commit to a same-week install. Paid the $395 rush fee and had new Navien installed Wednesday morning. Worth every penny."

A
Ashley D.
Rockville · 20850
Navien NPE-180S · April 2026
★★★★★

"I was skeptical of the 'fixed price' claim since every other contractor adds surprises. My consult confirmed there were no add-ons needed and the price stayed exactly the same. Clean install in one day."

D
David L.
Germantown · 20874
Rinnai RE140iN · January 2026
★★★★★

"Got tankless quotes from four Montgomery County companies. DMV was the middle price but the only one that laid out exactly what was included and what wasn't. Install was flawless."

P
Priya N.
Rockville · 20852
Navien NPE-240A2 · March 2026
★★★★★

"Impressed with the walkthrough at the end. They explained the Wi-Fi app, showed me where the service valves were, and texted me the rebate status a week later. Rebate check arrived in about 6 weeks."

J
Jennifer K.
Potomac · 20854
Navien NPE-240A2 · February 2026
★★★★★

"We had a tight utility closet in our Kentlands townhome. DMV Tankless measured everything at the consult and confirmed they could fit a Rinnai with no relocation fee. Exactly what they said, no surprises."

M
Marcus H.
Gaithersburg · 20878
Rinnai RX160iN · March 2026
★★★★★

"Whole-Home Pro install with dual Navien NPE-320A2s. We have 5 bathrooms and a pool house. Three full-pressure showers can run simultaneously now. This is what we've always wanted."

R
Robert F.
Potomac · 20854
Dual Navien NPE-320A2 · February 2026
★★★★★

"Very thorough about walking me through the federal tax credit documentation. My accountant said it was the cleanest tax paperwork he'd ever seen from a contractor. $600 credit applied cleanly."

S
Susan M.
Silver Spring · 20902
Navien NPE-180S · January 2026
★★★★★

"My old tank leaked into the finished basement. Just replaced the carpet. DMV Tankless put the new tankless on the wall — reclaimed the corner the old tank sat in. Added a leak sensor, too."

D
Daniel B.
Bethesda · 20814
Navien NPE-240A2 · March 2026
★★★★★

"Honest pricing and honest communication. They told me at consult that my gas meter needed to be upgraded by Washington Gas — $195 coordination fee. No surprises, just transparent."

N
Nicole V.
North Potomac · 20878
Rinnai RX160iN · April 2026

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4.9
Star average