The 10 plumbers serving Unionville, ranked.

10 plumbing companies serve the Unionville area within 20 miles, and we've read 293 of their public reviews — the critical ones first. 5 answer 24/7 per their Google listings; where reviewers describe real middle-of-the-night calls, that evidence is quoted on the cards below. Rankings are not for sale.

Ratings run high here (median 4.9, nobody below 4.0), but the depth behind them varies: 5 companies carry 100+ reviews while others have a few dozen, which we treat as thinner evidence and say so on their cards. Where reviewers repeat a specific complaint — 5 of the 10 companies have one — it's flagged below with their exact words. One number worth knowing: Brian B. Quick Plumbing alone carries 1,094 Google reviews — the deepest review base in this radius. Across the reviews we analyzed, the work named most often is water heaters and drain clearing.

Updated Jul 11, 202620-mile radius of downtown UnionvilleHow we rank

How we rank — the 60-second version

What we read: for each plumber, up to 100 recent reviews from Google, Yelp and BBB — the full text, not just the stars. For this page: 293 reviews across 10 businesses.

What moves a plumber up: repeated, independent evidence of showing up when promised, fair and upfront pricing, and work that holds. One glowing review counts for little; twenty that agree count for a lot.

What moves a plumber down: repeated complaint patterns — surprise fees, missed appointments, pressure sales — especially when they show up on more than one platform.

What never moves the ranking: money. One clearly labeled sponsored slot may appear above this list; it never changes the order below it.

Our take on each plumber is our opinion, grounded in the reviews we quote on this page. Full methodology ↓

Water everywhere right now? Shut off your main valve first, then jump to the 24/7 picks ↓. Every plumber below is one tap to call.

Our top picks

Consistent evidence of showing up, honest pricing, and work that lasts

Afternoon Plumbing

Top pick24/7 per Google listingSmall track record

5.0 (14 Google reviews) 15.7 mi from downtown Unionville

Our take — how we form it

Small shop (14 Google reviews), all 23 analyzed 5-star. Christopher does same-day/same-evening water-heater repairs at fair prices when bigger companies couldn't schedule for a week.

Rating mix — of the 14 reviews we analyzed

5★14

4★0

3★0

2★0

1★0

What reviewers keep saying

Same-day, even same-evening, response when larger companies booked out a week (fast_response=3) (cited in 2 of 24 reviews)
Fair pricing with free estimates and payment plans (fair_pricing=2, 6 plumber-cost mentions) (cited in 2 of 24 reviews)

What reviewers complain about

Only 14 Google reviews total, so the track record is thin compared to larger competitors

What reviewers praise

“Very knowledgeable and professional. Friendly and efficient. My family has worked with them for years. Always great.”

Andrew Danner · ★★★★★ · Google · Dec 2025

The most critical take we found

“Top 10 Best Plumbers in Aberdeen, MDAngie's Listhttps://www.angi.com › ... › Plumbers in AberdeenAngie's ListRead real reviews and see ratings for Aberdeen, MD plumbers for free! This list will help you pick the right plumbers in Aberdeen, MD.”

Angi Aggregate · ★ · Angi

We read 24 of 14 reviews · newest from Dec 2025

(443) 789-2897

Full report →Website ↗

Brian B. Quick Plumbing

Top pick24/7 per Google listing

4.9 (1,094 Google reviews) 19.0 mi from downtown Unionville

Our take — how we form it

4.9★ across 1,094 reviews — weekend emergency leak dispatch confirmed when others couldn't make it; water heater replacement included full warranty walkthrough with zero surprises; 3 toilets replaced in one visit with zero cleanup left behind.

Rating mix — of the 5 reviews we analyzed1,094 total on Google

5★5

4★0

3★0

2★0

1★0

Small sample — we've analyzed only 5 of 1,094 reviews so far. Treat this as a first read.

What reviewers keep saying

Weekend emergency dispatch confirmed — showed up for a leak when other companies couldn't make it; job done quickly by tech Dion (cited in 1 of 5 reviews)
Full pre-work explanation and warranty walkthrough on water heater replacement — tech detailed scope, process, and warranty terms before touching anything (cited in 1 of 5 reviews)

What reviewers complain about

No repeated complaints found in the reviews we've read.

What reviewers praise

“We had a great experience! The service was quick when we had an emergency leak, even when other companies couldn't make it out on the weekend. Our tech Dion was very knowledgeable and helpful. He got the job done quickly and was very professional.”

Ray Boarman · ★★★★★ · Google · Mar 2026

The most critical take we found

No critical reviews among the 5 we analyzed — there is nothing negative to quote yet.

We read 5 of 1,094 reviews · newest from Mar 2026

(443) 332-5436

Full report →Website ↗

Masterpiece Plumbing & Drain, LLC

Top pick

5.0 (384 Google reviews) 15.7 mi from downtown UnionvilleNot a 24/7 shop

Our take — how we form it

94 of 94 analyzed reviews are 5-star with zero negatives; themeCounts.fast_response=23 and fair_pricing=5 across 384 total reviews.

Rating mix — of the 15 reviews we analyzed384 total on Google

5★15

4★0

3★0

2★0

1★0

What reviewers keep saying

Same-day arrival cited across 15 service mentions; reviews note fixes completed in 30 minutes where previous plumbers spent 2 hours and failed. (cited in 3 of 94 reviews)
Pricing undercut competitors in multiple reviews — one reviewer paid half the price of a local plumber for a frozen spigot repair. (cited in 3 of 94 reviews)
Owner-operator walks customers through diagnostics in real time; 2 reviews specifically cite education on valves, maintenance tips, and Teflon tape technique. (cited in 2 of 94 reviews)

What reviewers complain about

No repeated complaints found in the reviews we've read.

What reviewers praise

“Ask yourself one question: What do you want in a plumber? If your answer is honesty, integrity, reliability and professionalism - then hire Sailo (owner) of Masterpiece Plumbing & Drain. Thought I was going to need an overhaul of the plumbing that comes in …”

Derek Ilopan · ★★★★★ · Google · Feb 2026

The most critical take we found

No critical reviews among the 15 we analyzed — there is nothing negative to quote yet.

We read 94 of 384 reviews · newest from Feb 2026

(240) 357-2615

Full report →Website ↗

Zo Plumbing and Drain Cleaning LLC

Top pick24/7 per Google listing

4.9 (137 Google reviews) 11.7 mi from downtown Unionville

Our take — how we form it

4.9 stars with 137 reviews; showed up on a Saturday night when 4 other plumbers couldn't for a sewage-in-basement emergency — within 30 minutes with 2 techs at reasonable price.

Rating mix — of the 5 reviews we analyzed137 total on Google

5★5

4★0

3★0

2★0

1★0

Small sample — we've analyzed only 5 of 137 reviews so far. Treat this as a first read.

What reviewers keep saying

Saturday-night sewer emergency: 4 other plumbers turned it down, Zo responded within 30 minutes with 2 technicians (cited in 1 of 5 reviews)
Fair pricing cited in 3 of 5 reviews including for full sewer line replacement and repiping (cited in 2 of 5 reviews)
Communicated throughout basement flood repair and went above and beyond on a weekend PVC pipe leak (cited in 2 of 5 reviews)

What reviewers complain about

No repeated complaints found in the reviews we've read.

What reviewers praise

“I appreciate the work done by the crew. They were quick to figure out the issue and fixed at a reasonable price! Highly recommend Zo Plumbing!”

Ankita Singh · ★★★★★ · Google · Mar 2026

The most critical take we found

No critical reviews among the 5 we analyzed — there is nothing negative to quote yet.

We read 5 of 137 reviews · newest from Mar 2026

(301) 401-1181

Full report →Website ↗

Maryland Clover Plumbing and Gas

Top pick

4.9 (104 Google reviews) 14.0 mi from downtown UnionvilleNot a 24/7 shop

Our take — how we form it

4.9★ across 104 reviews; fast_response theme in 4 of 5 sampled; same-day scheduling confirmed in 3 reviews; located a specialty power-vent water heater in stock same day for a unit that died; broad service range including remodel, fixtures, and gas.

Rating mix — of the 5 reviews we analyzed104 total on Google

5★5

4★0

3★0

2★0

1★0

Small sample — we've analyzed only 5 of 104 reviews so far. Treat this as a first read.

What reviewers keep saying

Same-day scheduling confirmed across 3 of 5 sampled reviews — faucet replacement, water heater diagnostic, and fireplace install all booked same-call. (cited in 3 of 5 reviews)
Water heater sourced and installed within 2 days on a difficult power-vent-only unit — team scoured local suppliers to find the right spec. (cited in 1 of 5 reviews)
Office responsiveness praised — Kimberly cited for quick replies; technician Correy D gave same-day estimate and completed the faucet job in the same visit. (cited in 2 of 5 reviews)

What reviewers complain about

slow_response theme tagged in 1 of 5 sampled reviews; one multi-job project took longer than expected due to scheduling constraints between visits. (1 of 5 reviews)

What reviewers praise

“Treavor from Maryland Clover Plumbing was incredibly helpful and courteous! He promptly arrived at our site and efficiently diagnosed the issue within an hour. We scheduled another appointment for him to resolve everything, and he arrived promptly, working …”

Front Desk · ★★★★★ · Google · Mar 2024

The most critical take we found

No critical reviews among the 5 we analyzed — there is nothing negative to quote yet.

We read 5 of 104 reviews · newest from Mar 2024

(301) 913-4200

Full report →Website ↗

Lyons Plumbing

Top pick

4.8 (92 Google reviews) 15.5 mi from downtown UnionvilleNot a 24/7 shop

Our take — how we form it

Lyons Plumbing holds 4.8★ across 92 reviews with a BBB A+ rating; all 5 analyzed reviews are 5-star water heater replacements — competitive pricing, on-time arrivals, and a tech who hauled out an electrician's trash unprompted stand out.

Rating mix — of the 5 reviews we analyzed92 total on Google

5★5

4★0

3★0

2★0

1★0

Small sample — we've analyzed only 5 of 92 reviews so far. Treat this as a first read.

What reviewers keep saying

Water heater replacement consistently praised: 4 of 5 analyzed reviews specifically mention water heater work, all 5-star, with competitive all-in pricing and on-time arrivals (serviceMentions.water-heater=4). (cited in 4 of 5 reviews)
Transparent, competitive pricing: Dan Lyons provided 'competitive all-in price, removing the BS you hear with other contractors'; neighbors and coworkers confirmed pricing was below-market. (cited in 2 of 5 reviews)
Willingness to take on unusual jobs: researched and serviced a discontinued water treatment system after 3 other companies refused. (cited in 1 of 5 reviews)

What reviewers complain about

No repeated complaints found in the reviews we've read.

What reviewers praise

“Lyons Plumbing is the best PLUMBING CO in Maryland. I have been a customer for many years and they are always punctual in coming to fix the issues. Recently my hot water heater went out and they ordered a new one and replaced it quickly. The owner Dan …”

Linda Crawford · ★★★★★ · Google · Feb 2026

The most critical take we found

No critical reviews among the 5 we analyzed — there is nothing negative to quote yet.

We read 5 of 92 reviews · newest from Feb 2026

(301) 253-4090

Full report →Website ↗

QSP Plumbing LLC

Top pick24/7 per Google listingSmall track record

5.0 (14 Google reviews)4.9 on Yelp (34) 19.8 mi from downtown Unionville

Our take — how we form it

5★ across 14 Google reviews; 50 of 51 sampled at 5-star with 12 fast-response and 9 fair-pricing mentions — Jose diagnosing honestly and downgrading expensive services saves customers money vs. competitors.

Rating mix — of the 15 reviews we analyzed

5★14

4★0

3★0

2★0

1★1

What reviewers keep saying

Within-the-hour triage call followed by same-day service; diagnosed a clogged p-trap instead of charging for full sewer line snake — saving customer money (cited in 3 of 51 reviews)
Fair, transparent pricing cited in 9 of 51 reviews; triple-checks work after completion and cleans up the area (cited in 3 of 51 reviews)
Caught and fixed a disposal wiring issue left by previous owners while clearing a kitchen drain — goes beyond the booked job (cited in 1 of 51 reviews)

What reviewers complain about

No repeated complaints found in the reviews we've read.

What reviewers praise

“Jose was amazing! He was fast to respond and came right over and was very thorough in locating where there was a leak. He was able to fix it quickly. Highly recommend him to address any plumbing issues!!”

Shea Kenealy · ★★★★★ · Google · Feb 2026

The most critical take we found

“I called and spoke to Jose, he scheduled an appointment for Friday. He asked me to text him my address, I did that. Never heard from Jose or anyone else at QSP Plumbing. I even called again and got voice mail, left Jose a voice message, he never responded. …”

Ray H. · ★ · Yelp · Sep 2023

We read 51 of 14 reviews · newest from Feb 2026

(240) 919-7349

Full report →Website ↗

Worth a look — with caveats

Real strengths, but read the concerns first

Benjamin Franklin Plumbing of Gaithersburg

Caveats apply24/7 per Google listing

4.8 (187 Google reviews) 16.6 mi from downtown Unionville

Our take — how we form it

4.8 stars across 187 reviews, with 74 of 85 analyzed at 5 stars but 5 one-star complaints. Reviewers praise techs like Israel and Ira Miller by name, including a Sunday water-heater repair, but multiple customers flag high per-valve pricing (e.g. $557 each, $455 toilet pull-and-reset) and one botched water-meter ins...

Rating mix — of the 15 reviews we analyzed187 total on Google

5★10

4★1

3★1

2★0

1★3

Why we're cautious

Two techs left a family without working water after a meter install they admitted to figuring out via ChatGPT and YouTube (1 of 85 reviews)
Pricing-fairness pattern: $557/valve, $455 toilet reset, and a ~$2,000 shower repair flagged as exorbitant across separate reviews (3 of 85 reviews)
One toilet repair leaked again within an hour of the tech leaving (1 of 85 reviews)

To be fair

Repeat customers request named techs like Israel and Ira Miller, including one Sunday water-heater diagnosis and full reinstall (cited in 3 of 85 reviews)
22 of 85 reviews highlight fast response — one tech replaced a leaking 80-gallon water heater quickly in a tight space (cited in 3 of 85 reviews)
Customers cite advance text with the technician's photo and bio before the appointment (cited in 1 of 85 reviews)

What reviewers praise

“I was out of H20, Jerry and his assistant were right on time and did a superb job in restoring a vital supply. I commend their efforts and wish the "Yankee best in show." His tattooed man showed admirable skills and left a pristine work space. Jesus love …”

Donald Abrams · ★★★★★ · Google · Mar 2026

The most critical take we found

“I am extremely disappointed with the service we received today. Two technicians arrived to install a water meter, but spent the duration of the visit consulting ChatGPT and YouTube videos to figure out the process. Not only did they fail to finish the …”

Nicole Andrews · ★ · Google · Feb 2026

We read 85 of 187 reviews · newest from Mar 2026

(301) 636-5081

Full report →Website ↗

Myers Plumbing Services Germantown MD

Caveats applySmall track record

5.0 (10 Google reviews) 19.0 mi from downtown UnionvilleNot a 24/7 shop

Our take — how we form it

14 reviews analyzed, all 5-star, but only 10 Google reviews total; 2 theme hits for 'expensive' signal pricing may run higher than expected for a small-volume shop.

Rating mix — of the 9 reviews we analyzed10 total on Google

5★9

4★0

3★0

2★0

1★0

Small sample — we've analyzed only 9 of 10 reviews so far. Treat this as a first read.

Why we're cautious

Only 10 Google reviews — thin sample makes positive aggregate unreliable; verify directly before booking for high-cost jobs. (1 of 14 reviews)
2 of 14 reviews flag 'expensive' theme — pricing may exceed budget expectations even if work quality is solid. (2 of 14 reviews)

To be fair

Water heater installation completed without upsell pressure — 2 reviewers note technician explained efficiency ratings and recommended correctly-sized unit. (cited in 2 of 14 reviews)
Shower fixture relocation required moving existing plumbing; team communicated each step and checked alignment — work described as looking professional. (cited in 1 of 14 reviews)

What reviewers praise

“We had a slow drain in the kitchen that was starting to smell pretty bad. The team from Precision Plumbing came out the next day and used some specialized equipment to clear it out. They were careful not to make a mess on the hardwood floors and even wore …”

Tristian Micaela · ★★★★★ · Google · Feb 2026

The most critical take we found

No critical reviews among the 9 we analyzed — there is nothing negative to quote yet.

We read 14 of 10 reviews · newest from Feb 2026

(227) 245-0003

Full report →

We'd keep looking

The average rating hides complaint patterns we can't ignore

357 Plumbing, LLC

We'd call someone else firstSmall track record

4.7 (24 Google reviews) 17.5 mi from downtown UnionvilleNot a 24/7 shop

Our take — how we form it

4.7★ across 24 reviews but reviewConsistency=0.04 — 2 of 5 analyzed are 1★; Pablo earns praise for GE heat pump installs and drain clears, but two reviewers cite substandard wall repair and inflated pricing for simple fixes.

Rating mix — of the 5 reviews we analyzed24 total on Google

5★3

4★0

3★0

2★0

1★2

Small sample — we've analyzed only 5 of 24 reviews so far. Treat this as a first read.

Why we're cautious

With only 24 total reviews, 2 of 5 analyzed cite pricing overreach: $175 to turn screws + $1,000 quote for a job owner fixed with a drill bit; diagnosis capability questioned (1 of 5 reviews)
Finish work not completed as promised — reviewer says Pablo 'promised he'd put everything back properly' but did not (1 of 5 reviews)
Wall restoration after pipe access left 'hacked up' plaster; customer forced to repair themselves after paying for professional work (1 of 5 reviews)

To be fair

Competitive pricing on heat pump water heater installs — GE-authorized installer; quote described as 'very reasonable' vs. 'astronomical' competitor prices (cited in 1 of 5 reviews)
Same-day/next-day availability; personally sourced parts when customer lacked time to shop (cited in 1 of 5 reviews)

What reviewers praise

“Excellent experience with Pablo from 357 Plumbing. I wanted to get a heat pump water heater installed. It was a GE brand and Pablo was recommended as an installer for these GE models. He gave a very reasonable quote (other companies were astronomical!), …”

Jonathan Dail · ★★★★★ · Google · Jan 2026

The most critical take we found

“This company just tries to extract as much money as possible from you. I was trying to change the shower cartridge and broke the old one in the process. I called this plumber and he said cartridge is stuck, whole assembly needs to be changed, but meanwhile he …”

Harsh Pareek · ★ · Google · Mar 2026

We read 5 of 24 reviews · newest from Mar 2026

(301) 996-5261

Full report →Website ↗

What reviewers complain about in Unionville

The repeated complaint patterns our read surfaced, business by business — each links to the card where the supporting quotes live. How we find these →

Benjamin Franklin Plumbing of Gaithersburg — Two techs left a family without working water after a meter install they admitted to figuring out via ChatGPT and YouTube
Benjamin Franklin Plumbing of Gaithersburg — Pricing-fairness pattern: $557/valve, $455 toilet reset, and a ~$2,000 shower repair flagged as exorbitant across separate reviews
Benjamin Franklin Plumbing of Gaithersburg — One toilet repair leaked again within an hour of the tech leaving
Myers Plumbing Services Germantown MD — Only 10 Google reviews — thin sample makes positive aggregate unreliable; verify directly before booking for high-cost jobs.
357 Plumbing, LLC — With only 24 total reviews, 2 of 5 analyzed cite pricing overreach: $175 to turn screws + $1,000 quote for a job owner fixed with a drill bit; diagnosis capability questioned
357 Plumbing, LLC — Finish work not completed as promised — reviewer says Pablo 'promised he'd put everything back properly' but did not
Afternoon Plumbing — Only 14 Google reviews total, so the track record is thin compared to larger competitors
Maryland Clover Plumbing and Gas — slow_response theme tagged in 1 of 5 sampled reviews; one multi-job project took longer than expected due to scheduling constraints between visits.

How we rank the plumbers on this page

We read the reviews — all of them we can get. For each plumber serving Unionville we pulled up to 100 recent reviews from Google, Yelp and BBB and read the full text. For this page: 293 reviews across 10 businesses.
Patterns beat anecdotes. A plumber moves up when independent reviewers keep describing the same behavior: showing up when promised, quoting before working, work that holds. One rave changes nothing.
Complaints count double when they repeat.Surprise fees, missed appointments, pressure sales — when the same complaint appears across reviewers (or across platforms), it caps how high we'll rank a business regardless of its star average.
Money never moves the ranking.A plumber can buy the clearly-labeled sponsored slot at the top of the page — visibility, not endorsement. A business we wouldn't recommend can't buy the slot at all, and no payment changes the ranked order.
Our take is our opinion.It's grounded in the reviews we quote and count on this page — check our evidence and disagree with us if you like. That's the point of showing it.

Every quotation on this page is reproduced verbatimfrom a publicly posted review and attributed to its author, star rating, platform and date. Star averages and review counts are Google's (or Yelp's) as of our last data pull. “Rating mix” charts describe only the set of reviews we analyzed, which we state on every card. Read the full policy — including what we do not do — on our methodology page.

Areas served

The plumbers on this page also serve Keymar, Ladiesburg, Libertytown, New Midway, New Windsor, Rocky Ridge, Union Bridge, Walkersville, Woodsboro — this Unionville guide covers those areas.

Nearby city guides

Ijamsville, MD · 30 plumbers · 12 mi Cooksville, MD · 52 plumbers · 14 mi Boring, MD · 25 plumbers · 20 mi Tuscarora, MD · 37 plumbers · 23 mi Pikesville, MD · 57 plumbers · 25 mi Sparks Glencoe, MD · 46 plumbers · 28 mi