Licensed For Gas Here
WSSC-licensed gasfitters. In this county that is a legal requirement for gas work, not a credential we volunteer.
Gas Line Installation & Repair In Gaithersburg, MD
Natural gas line installation, repair and replacement in Gaithersburg and Montgomery County by WSSC-licensed gasfitters — permit and inspection pulled as part of the job, and suspected leaks dispatched 24/7.
4.9 from 2,979 Google reviews
30+ Years 30+ Years Serving Maryland
24/7 Service 24/7 Emergency Service
WSSC Licensed WSSC Licensed & Insured
Locally Owned Locally Owned and Operated
Gas Line Service in Gaithersburg
Gas line installation and repair in Gaithersburg
Gas piping is not general plumbing. Ranges, dryers, water heaters, boilers, fireplaces, pool heaters and outdoor kitchens all need a gas supply run correctly, and in Montgomery and Prince George's County that work is legally restricted — it has to be done by a WSSC-licensed plumber or gasfitter, and it carries a permit and an inspection.
Mallick is WSSC-licensed for exactly this. We install new natural gas piping, run flexible gas line where it suits the job better, and replace existing runs that have reached the end of their life.
Schedule Gas Line Service
Tell us what you need — we’ll be in touch fast.
Sized For The Whole Run
We size the whole run, so adding one appliance does not starve everything else on the line.
Permit Included
Permit pulled and inspection arranged as part of the job, not left for you to chase.
Smell gas, or an appliance starved of it? Leave first, then call us.
Call (301) 804-6759Worth Knowing
Leaks, restrictions and appliances starved of gas
Gas problems arrive in three forms: a leak, a restriction, or an appliance that is not getting the supply it needs. The third is the one homeowners misdiagnose most often — a range that will not hold a flame or a water heater that keeps dropping out is frequently a supply problem rather than an appliance fault.
Undersized pipe is the usual cause. It works fine until a second appliance is added, and then nothing on the run performs properly. Sizing the whole run, rather than the newest appliance on it, is what avoids that.
How the call runs
How a gas line job actually runs
If you smell gas, leave first and call from outside. Do not operate switches, do not look for it yourself, and do not wait to see whether it gets stronger.
We run 24/7 emergency service and treat a suspected leak as exactly that. Everything else — the permit, the inspection, the sizing conversation — happens after the property is safe.
You call, we answer
A suspected leak is an emergency dispatch. Everything else is booked, and we say which yours is on the call.
The run is sized, not the appliance
A WSSC-licensed gasfitter surveys the existing run — sizing the whole line, not just the appliance being added.
Permits included in the plan
The work is explained before it begins, including permit and inspection requirements.
Inspected and closed out
WSSC inspection arranged and closed out, with the work warrantied in writing.
Why Mallick
Maryland Has Trusted Mallick For 30+ Years
WSSC-licensed and insured crews, and warranties in writing: one year on installations, 30 days on repairs. The same standard whether it is a gas line call at 2pm or a burst line at 2am.
Google reviews
2,979
4.9 average across Gaithersburg, Frederick and Woodbine
Ways To Save
Current Offers On This Job
$32
Off
Any Plumbing Service
$1 off for Each Year We’ve Been in Business!
Limit 1 offer per customer, cannot be combined with other offers, residential use only, must be presented at time of service. Not applicable to dispatch charge. Only applies for work performed. Valid Jan 1 – Dec 31, 2026.
Our maintenance plan
The Service Contract Of Choice
A 12-month annual maintenance contract for your home’s plumbing. The team is small enough to give you personalized attention and large enough to handle whatever comes up.
What stands behind every contract
12-month coverage term
24/7 emergency line
Licensed, trained technicians
Payment plans available
2-Year Extended Warranty for Furnished & Installed Equipment
6-Month Repair Warranty
Levels are matched to your home
The office confirms the current contract levels and details before you commit — call and the team will walk you through the options.
12-month term · Sign up by phone
Customer Field Notes
What Customers Remember After The Call
4.9
2,979 Google reviews across three Maryland locations
Field note 01 · Gaithersburg, MD
“Eric and Nick did a wonderful job.”
Very thorough and provided detailed explanation of what was needed to get our garbage disposal up and running.
Abbas and Koli were great technicians.
Quickly diagnosed the issue, thoroughly explained everything, and gave me a few options to move forward. I've had great experiences working with Mallick, highly recommend.
Chrissie Schenkel · Gaithersburg, MD Abbas came to our house for an emergency repair on a Saturday.
He was courteous and kind, he didn’t rush, and he worked hard to fix our problem and thoroughly investigate. It was hard to find a plumber who could do this on a Saturday at the last minute, and we appreciated Mallick’s and Abbas’s willingness.
Raj Nayak · Gaithersburg, MD Abbas Rahimiari was exceptionally professional, looking at our two plumbing problems, describing the underlying issues, fixing one immediately and explaining options on the other. Courteous, clear and efficient. And knowledgeable.
Gordon Schatz · Gaithersburg, MD I had a wonderful experience with Billy.
He was amazing and he was able to fix my issue with no concerns! 10/10! Thank you Billy.
Mia Barker · Gaithersburg, MD Excellent service and support from William Clem and Malick Plumbing.
Had a pinhole leak in a water service line. Found and fixed the problem … thanks so much.
Daryle Seckar · Gaithersburg, MD Roberto and Adelson were great to work with, efficient, and answered all questions. Top service and repair of water heater!
Jonathan Daly · Gaithersburg, MD
Fred and Luka were great!
They took the time to find the issue as well as helping me get opinions on future concerns as a new homeowner! Real experts and will work with them again!
Elijah Wadsworth · Woodbine, MD Abbas and Koli were fantastic.
They quickly identified and resolved our issue, and did a check to ensure there were no other sleeping issues. They were a pleasure to work with, respectful, and kind.
Kelley Barnaby · Gaithersburg, MD I received great service from both Ikem and CJ today.
They quickly identified the leak and fixed the issue. They also did a great job replacing some valves that needed replacing. They were very experienced and efficient. I have used Mallick several times and have always been pleased with their service.
Melissa Cavuto · Gaithersburg, MD Abbas and Erick were professional, knowledgeable and kind.
They inspected and guided me to make safe choices with my range that had a gas leak.
Andrea Huerta · Gaithersburg, MD Abbas and Bryan installed my new water heater.
There was a leak in my furnace and they fixed it also! The job was perfect. They had to install vents that were well done. They left no trace and the house was completely clean. The new water heater works like a charm. HIGHLY RECOMMEND this team and Mallick.
Janet · Gaithersburg, MD Kyle was so helpful in helping my husband and I fix the water pressure in our house. Kyle was very well versed and experienced, providing great options for future improvements to water filtering. I would highly recommend his services to anybody struggling with plumbing issues.
Azusena Herrera Tapia · Gaithersburg, MD
Every quote above comes directly from Mallick’s current Google Business Profile record.
Read more customer storiesCommon Questions
Gas Line Questions, Answered
Still Stuck?
Talk To A Plumber
(301) 804-6759Someone picks up 24/7 — nights, weekends, and holidays included.
Do I need a permit for gas line work in Montgomery County?
Yes, and it cannot be done by the homeowner. In Montgomery and Prince George's County, gas permits come from WSSC Water rather than the county permitting office, and the code requires a WSSC-licensed plumber or gasfitter to do the work and arrange the inspection. We pull it as part of the job.
What should I do if I smell gas?
Leave the property first and call from outside. Do not operate light switches or appliances, and do not go looking for the source. Once you are out, call us — we run 24/7 and a suspected gas leak is dispatched as an emergency.
Can you add a gas line for a range, dryer or outdoor kitchen?
Often, but it depends on the existing run. Adding an appliance to a line that was sized for what was already on it is the most common cause of poor performance across every appliance on that run — so we size the whole run rather than just the new connection.
My appliance works poorly — could it be the gas line?
Frequently, yes. An appliance that will not hold a flame, drops out under load, or has got noticeably weaker is often being starved by a restriction or an undersized run rather than failing itself. That is worth checking before anyone replaces the appliance.
How do I choose a gas line service company?
Check that the contractor holds the required WSSC licence for work in Montgomery or Prince George's County. Ask how permits and inspection will be handled.
Where We Work
Gas Line Service Across Maryland
Bethesda Rockville Silver Spring Germantown Potomac Olney Clarksburg Damascus Chevy Chase North Potomac Frederick Woodbine Columbia Ellicott City Aspen Hill Boyds Burtonsville Darnestown North Bethesda Poolesville Takoma Park Wheaton–Glenmont White Oak Green Valley Linganore Washington, DC College Park
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