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Main Sewer Line Installation.  We repair and install sewer lines.
The Mallick Team replaced the water heater, well tank, water treatment system, and sump pump while creating a cleaner, more efficient layout
Mallick Plumbing & Heating is a dependable team you can trust. We pride ourselves on exceptional service and solutions!
Benefits of a Hybrid Water Heater:

- Energy Efficient
- Reduction in Carbon Footprint
- Rebates Available
- And Much More!
Less bottled water. More understanding of your water. 

A RO System is one way homeowners are making that shift.
The MPH Family
Don't Let Bad Water Quality Ruin Your Day. 

Quality Water is always at the end of the Rainbow with Mallick Plumbing & Heating!
Have You Seen Our Trucks on the Road?

We travel to your home in a well-stocked truck in the Greater Washington Metro Area.
We have the technology to know exactly what is going on in your Residential or Commercial pipes and eliminate the guess work!
We recommend our customer's homes maintain a water pressure between 60-65 PSI. 

Anything about 75 PSI could put strain on your system.
Mallick Plumbing & Heating Plumbing

Mallick Plumbing & Heating is a trusted plumbing and heating company serving Gaithersburg, Frederick, and communities across Maryland for over 30 years. Specializing in residential and commercial plumbing, their licensed technicians handle everything from drain cleaning, water heater installation, and leak detection to gas lines, sewer repair, and water treatment systems. Known for honest communication and exceptional craftsmanship, the Mallick team takes time to explain findings and walk customers through their options before any work begins. With 24/7 emergency availability, financing options, and a commitment to fair pricing, Mallick Plumbing & Heating has earned recognition as a Best of Gaithersburg award winner.

Website: mallickplumbing.com

Phone: (301) 804-6759

Closed now

  • Thu 7:00 AM - 5:00 PM

7620 Rickenbacker Dr, Ste L Gaithersburg, MD 20879 ·148.34 mi

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Reviews

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4.0 142 reviews
5 star
96 4 star
11 3 star
7 2 star
8 1 star
20
Carol S. 07/28/26

Brendon from Mallick Plumbing serviced our Toto toilet with both knowledge and concern. We highly recommend Brendon and Mallick Plumbing who ordered an set up an appointment is a very timely way.

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Rizwan M. 07/30/26

Called these people for an estimate to repair/replace leaky copper pipes in the basement that were leaking, on top of the Hot Water heater. The guy came out, don't want to name the plumber, sent...

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Moritz R. 05/11/26

I was a customer of theirs until they tried to rip me off by charging almost $900 for a hose bib replacement. That being said there are plenty of other plumbing companies around.

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Francis P. 10/09/25

Replaced a household hot water tank heater with modern efficient heat pump, added constant water pressure well water system, replace kitchen sink drain flange. Professional, clean, and polite...

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Kelly M. 08/11/26

I paid Mallick $1,654.33 for two technicians and approximately two hours of labor to replace a well-pump controller. I was also charged $2,485.50 for a Goulds Aquavar Solo 1AS15 controller, which...

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