Upfront Pricing
Options and pricing before the work starts, so the invoice is never a surprise.
Gaithersburg · Serving Maryland 30+ Years
Montgomery County’s
Trusted Plumber
For 30+ Years
WSSC-licensed technicians, upfront pricing, and warranties in writing — repairs, water heaters, drains, water treatment, and 24/7 emergencies across Montgomery and Frederick County.
30+ Years Serving Maryland
24/7 Emergency Service
WSSC Licensed & Insured
ABC & PHCC Members
Your Local Gaithersburg Plumbing Contractor
Our Family, Serving Yours For 30+ Years
Plumbing problems don’t keep business hours. Mallick Plumbing & Heating has been the reliable choice across Gaithersburg and Montgomery County for more than three decades — call (301) 804-6759 and reach a real person, day or night.
We’re small enough to give you personalized attention and large enough to handle whatever turns up behind the wall, with our sister company Mallick Mechanical Contractors backing us on commercial work.
WSSC licensed & insuredUpfront, honest pricingSame-week scheduling24/7 emergency service
Schedule Service
Tell us what you need — we’ll be in touch fast.
Live Assistance
Someone answers around the clock — nights, weekends, and holidays included.
Warrantied Work
One year on installations, 30 days on repairs. Backed in writing, every job.
Maryland’s Choice For 30+ Years
Don’t Wait On A Leak —
Get It Looked At Today.
Same-week scheduling across Montgomery and Frederick County. 24/7 for anything that can’t wait.
We Give You The Service You Need
Whatever the house throws at you, one WSSC-licensed team handles it — with HD sewer cameras, sonic leak detection, hydro-jetting, and trenchless repair when the job calls for it.
- Leak Detection
- Hydro-Jetting
- Trenchless Repair
- Repiping
- Sump Pumps
- Commercial Plumbing
Plumbing in Gaithersburg
Repairs, repiping, fixtures, and leak detection for every part of the house.
Drain & Sewer in Gaithersburg
HD sewer cameras, hydro-jetting, and trenchless repair to clear it and keep it clear.
Water Heaters in Gaithersburg
Tank, tankless, and hybrid installs and repairs — sized right for your home.
Water Treatment in Gaithersburg
Softeners, filtration, and testing so what comes out of the tap is worth drinking.
Why Gaithersburg Calls Mallick
Three Decades Of Maryland Plumbing
Mallick Plumbing & Heating has been the plumber Montgomery County homeowners call for over thirty years. What started as a small Gaithersburg shop now runs three Maryland offices — and still answers the phone the same way: with a person, at any hour.
- 30+
- Years in Maryland
- 3
- Maryland offices
- 19572
- MD license no.
Licensed Technicians, Not Subcontractors
Every technician is WSSC-licensed, certified by the Washington Suburban Sanitary Commission that runs water and sewer service across Montgomery and Prince George's County. We're members of the Associated Builders and Contractors and the Plumbing-Heating-Cooling Contractors Association. The person at your door works for us.
Priced Before We Start, Warrantied After
You get the options and the price before any work begins, so the invoice is never a surprise. Installations carry a one-year warranty and repairs carry thirty days, in writing. Financing and payment plans are there for when a water heater fails at the worst possible moment.
Residential And Commercial, One Call
Homeowners get the whole range — plumbing repair, drain and sewer service, water heaters, and whole-home water treatment. Commercial and mechanical work is backed by our sister company, Mallick Mechanical Contractors, so a restaurant or property manager gets the same crew on a much bigger system.
Three Offices, One Standard
Gaithersburg, Frederick, and Woodbine put a crew near most of the region, and 24/7 emergency service means nights, weekends, and holidays are covered. Small enough to give your home personal attention, large enough to handle whatever turns up behind the wall.
Equipment, Not Guesswork
Old-Fashioned Hard Work,
Modern Tools
HD Sewer Cameras
See inside the line before anyone digs, so the diagnosis isn't a guess.
Sonic Leak Detection
Finds water behind a wall without opening the wall to look for it.
Hydro-Jetting
Scours the drain properly instead of punching a hole through the clog.
Trenchless Repair
Repairs a sewer line without excavating the front yard to reach it.
In Their Words
Trust Our Team To Work
I would definitely call Mallick again!
Excellent service!! After leaving messages with two other plumbing companies without a response, I called Mallick and was able to schedule an appointment for the following day. He was on time, knowledgeable and was able to fix two clogged drains quickly.
Just good homeowner advice
Dale came out within 90 minutes and quickly diagnosed the problem. Dale spent the time to explain the issue and how to proceed, and recommended upkeep in the future, but was not trying to sell me on anything — just provided good homeowner advice.
Beat competitive bids
Quoted the job over the phone, beat competitive bids, showed up when scheduled, friendly and courteous personnel both in the back office and on the job site, completed the work quickly. A truly professional organization.
Common Questions
Plumbing Questions, Answered
The things Gaithersburg homeowners ask us most — the shut-off valve one is worth reading before you need it.
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
Where is my main water shut-off valve?
In a plumbing emergency, shut the water off first, then call us. The main valve is generally located where the water supply enters your home. Check that yours turns smoothly and shuts the water off completely — valves fail over time from age and calcium buildup, and you don't want to discover that mid-emergency.
How do I choose the right water heater?
Your whole household depends on it, so sizing matters. Common warning signs that yours is failing include rusty-looking water, bad smells, dingy laundry, leaking, and strange noises. We repair and replace both tank and tankless units and will size the right model for your home.
What can I do to maintain my plumbing system?
A well-maintained system is far less likely to surprise you with an unexpected failure. Alongside regular professional maintenance, inspect your plumbing regularly — spotting a problem early is always the cheapest time to fix it.
How can I conserve water?
Install water-conserving fixtures and appliances, have maintenance performed to catch hidden leaks, and lower the water level in your toilet tank. More than a third of the water used in the average home goes through toilets, so that last one adds up with every flush.
Do you offer emergency plumbing service?
Yes — 24/7, across Montgomery and Frederick County, including nights, weekends, and holidays. Call (301) 804-6759 and you'll reach a real person.
What warranty do you offer?
One year on installations and 30 days on repairs, in writing. We're WSSC-licensed and carry insurance, and we're members of ABC and PHCC.
Where We Work
Serving Montgomery, Frederick & Howard County
Three Maryland offices — Gaithersburg, Frederick, and Woodbine — covering communities across the region. Every pin is a city we serve; tap one for local plumbing, drain, and water heater service.
Montgomery County
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Frederick & Howard County
DC & Prince George's
30+ Years
Serving Maryland
WSSC Licensed
Washington Suburban Sanitary Commission
ABC Member
Associated Builders and Contractors
PHCC Member
Plumbing-Heating-Cooling Contractors