Licensed Plumber in Gaithersburg, MD
Want credentials you can verify? These plumbers are BBB accredited.
Montgomery County15 plumbers available
All Licensed Plumber Pros in Gaithersburg
Mallick Plumbing & Heating, Inc.
4.9·2.1k reviews·
In GaithersburgGoogle Verified
+5 more
Strengths
Fast response and punctuality
Exceptional craftsmanship and attention to detail
Named technicians earn high praise
Concerns
Not enough data to identify weaknesses
Len The Plumber Heating & Air, LLC
4.6·8.3k reviews·
13 mi away — Serves your areaGoogle Verified
+4 more
Strengths
Same-day or next-day emergency response: Multiple reviews mention…
Individual technicians are consistently skilled and…
Willingness to make things right: Review shows company returned…
Concerns
Two separate 1-star reviews citing poor scheduling reliability…
Possible AI/chatbot communication issues mentioned: customer…
Pricing transparency concerns: One review notes technician…
Unreliable scheduling for service plan subscribers: One 1-star…
Service Force Plumbing
4.9·674 reviews·
In GaithersburgGoogle Verified
+3 more
Strengths
BBB A+ accreditation with zero complaints over 3 years and 24…
Same-day or next-day service mentioned in 12+ Google reviews;
Consistent pattern of transparency: 8+ reviewers specifically…
Concerns
3 of 86 reviews report pricing disputes or perceived billing…
One 1-star review (11/11/2025) reports sewer backup recurred 2…
Heil Plumbing & HVAC
5·997 reviews·
In GaithersburgGoogle Verified
Strengths
Solves complex problems other plumbers couldn't fix
Highly knowledgeable and professional technicians
Same-day service availability
Thorough explanations and customer education
Concerns
24-hour emergency availability unclear
No price information mentioned in reviews
Service Force Plumbing
4.9·130 reviews·
12 mi away — Serves your areaGoogle Verified
+1 more
Strengths
BBB A+ accreditation with zero complaints across 24 years in…
Fast response and same-day service mentioned in 12+ Google…
Consistent pattern of thorough diagnostics and transparent…
Concerns
1 of 69 Google reviewers (04/02/2026) reports being charged $450…
2 of 69 Google reviewers cite pricing concerns: one questioned…
One 3-star review (07/21/2025) cites $750 charge for partial RO…
Thomas E Clark Inc
4.8·306 reviews·
12 mi away — Serves your areaGoogle Verified
+3 more
Strengths
135 years in business with A+ BBB accreditation and zero…
Emergency response documented in 15+ reviews: same-day service,…
Deep expertise in lead pipe replacement and old building systems:…
Concerns
1 documented case of technician using customer bathroom without…
1 documented case of HVAC salesman unprofessional conduct:…
Pricing disputes in 2 reviews: customer felt charged excessively…
Roto-Rooter Plumbing & Water Cleanup
4.8·1.3k reviews·
12 mi away — Serves your areaGoogle Verified
+4 more
Strengths
Fast response times: One reviewer received service within two…
Technicians are skilled and complete work: Multiple reviews note…
Available on weekends: Received calls and dispatches on…
Concerns
Systematic overcharging: 10 of 13 reviews explicitly complain…
Questionable diagnostic practices: Techs recommend expensive…
Refusal to provide documentation: One reviewer denied video copy…
Pressure sales tactics: High-pressure contracts offered during…
JF Plumbing & Heating
4.8·138 reviews·
In GaithersburgGoogle Verified
Concerns
Only 1 review — limited data
All Clear Plumbing & Drain Service, LLC
4.9·560 reviews·
19 mi away — Edge of service areaGoogle Verified
+4 more
Strengths
Emergency response: Multiple reviewers report same-day or…
Water heater expertise: 40+ reviews specifically praise water…
Exceptional front-desk customer service: At least 10 reviewers…
Concerns
Price gouging pattern: 2 of 93 reviewers (2.2%) report charges…
Inconsistent callback protocol: 1 reviewer unable to reach…
Service Force Plumbing
4.9·397 reviews·
13 mi away — Serves your areaGoogle Verified
Concerns
Only 1 review — limited data
Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical
4.8·300 reviews·
12 mi away — Serves your areaGoogle Verified
+2 more
Strengths
Fast emergency response: Multiple reviews cite same-day or…
Thorough diagnostics and honesty: Reviewers repeatedly mention…
Experienced individual technicians: Chris Haas, Mike, Kevin,…
Concerns
Frequent pricing disputes: 9+ one-star reviews specifically cite…
Diagnostic fee conflicts: At least 4 customers report being…
Warranty/follow-up issues: Two reviews describe drain clogs…
Escalating estimates: One customer reported quote jumping from…
Brian B. Quick Plumbing
4.8·1.5k reviews·
17 mi away — Edge of service areaGoogle Verified
+5 more
Strengths
Fast emergency response: 12+ Google reviews explicitly mention…
BBB A+ accreditation with only 1 complaint in 10 years of…
Technician quality: Named techs like Dion, Pierre, Mike, and…
Concerns
Billing disputes and potential overcharging: 3 of 87 Google…
Damage and accountability failures: 2 reviews report…
Inconsistent quality on complex jobs: 1 review notes junior tech…
The Drain Guys
4.7·169 reviews·
In GaithersburgGoogle Verified
Strengths
Quick 24-hour emergency response
Strong technical expertise and problem diagnosis
Professional and knowledgeable technicians
Honest assessments that can save customers money
Concerns
Customer reported $18,000 job with poor cleanup, ongoing ground…
Poor post-job cleanup and concrete work
Inconsistent customer service after completion
Family Plumbing Services LLC
4.4·17 reviews·
7 mi awayGoogle Verified
+3 more
Strengths
High-quality installation and repair work: 8 of 12 Google…
Strong communication on active jobs: Two recent reviews (Nestor's…
Concerns
2 of 12 Google reviewers report complete no-shows after…
1 of 12 reviewers waited 46+ minutes past scheduled appointment…
1 reviewer reported erratic vehicle operation (running stop sign…
Unresolved BBB complaint on file despite 13 years of operation;
Roto-Rooter Plumbing & Water Cleanup
4.8·2.8k reviews·
16 mi away — Edge of service areaGoogle Verified
+4 more
Strengths
Fast emergency response: Multiple reviewers report arrival within…
Individual technician quality varies: Several reviewers praised…
Same-day or next-day availability: Reviews mention calls answered…
Concerns
Systematic overcharging: 11 reviews cite prices dramatically…
Deceptive practices: Technicians avoiding diagnosis,…
Inconsistent follow-up: One review reports supervisor 'vanished'…
High variance in technician quality: Same company produces both…
Common Licensed Plumber Scenarios
BBB Accredited
BBB accreditation means the business has met standards for trust, advertising, and complaint resolution. It's a verified third-party credential.
Licensed and Insured
All plumbers on our site are licensed in their state. BBB accreditation adds an additional layer of accountability and complaint resolution.
Verified Track Record
BBB-accredited plumbers have a public complaint history and resolution record you can review before hiring.
Warranty Compliance
For warranty-sensitive work (repiping, water heater installation), a licensed and accredited plumber provides documentation that satisfies manufacturers and insurers.
Frequently Asked Questions
How do I verify a plumber's license in MD?
In MD, you can verify plumber licenses through the state licensing board website. All plumbers listed on our site are licensed. Plumbers below with the BBB badge have additional third-party accreditation and a public complaint record.
Why does BBB accreditation matter?
BBB accreditation means the plumber has agreed to resolve complaints, maintain honest advertising, and meet trust standards. It's not a guarantee of quality, but it adds accountability — the BBB tracks complaints and resolution rates publicly.
Are all plumbers in Gaithersburg licensed?
By law, plumbers performing work in Montgomery County must be licensed. However, some unlicensed handymen advertise plumbing services illegally. Hiring an unlicensed plumber voids insurance claims and can create permit issues when selling your home.
What's the difference between a journeyman and master plumber?
A journeyman plumber has completed an apprenticeship and passed the licensing exam. A master plumber has additional years of experience and can pull permits, supervise journeymen, and run a plumbing business. Both are qualified for residential work.
Other Services in Gaithersburg
Drain Cleaning Water Heater Repair Burst Pipe Repair Repiping Bathroom Remodel Plumbing Sewer Repair Sewer Line Replacement Toilet Repair Faucet Repair Garbage Disposal Repair Sump Pump Repair Gas Line Repair Slab Leak Repair Water Line Repair Kitchen Remodel Plumbing Hydro-Jetting 24-Hour Plumber Same-Day Plumber Affordable Plumber Plumber Cost Clogged Drain No Hot Water Water Leak Low Water Pressure Frozen Pipes Sewage Backup All Emergency Plumbers
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