Gas Line Services in Southern Maryland
Licensed Master Plumber & Gas Fitter — License #98433
Gas line installation, repair, leak detection, and appliance connections throughout Calvert, Anne Arundel, and Charles County. Terry Foster holds both a Maryland Master Plumber license and a Gas Fitter license — one of the few plumbers in Southern Maryland qualified to do it all.
Why a Licensed Gas Fitter Matters
In Maryland, gas line work must be performed by a licensed plumber or gas fitter. Terry Foster holds both a Maryland Master Plumber license and a Gas Fitter license (License #98433) — which means Deep Dive Plumbing Maryland can legally perform all gas line installation, repair, and testing work in the state.
Many plumbing companies in Southern Maryland are not licensed for gas work and must subcontract it out — adding cost and coordination delays. When you call Deep Dive Plumbing Maryland for gas line work, you get a licensed Gas Fitter who can diagnose the problem, pull the permit, perform the work, and coordinate the final inspection — all in one call.
Gas line work is not something to cut corners on. Improper installation, inadequate pressure testing, or missing permits can create serious safety hazards and liability issues. We do it right, with the proper license, permit, and inspection every time.
Gas Line Services We Provide
From new gas line installation to leak detection and repair — all performed by a Maryland Licensed Gas Fitter.
Gas Line Installation
New gas line runs for generators, grills, fire pits, stoves, dryers, and whole-home appliances. Code-compliant installation with permit coordination.
Gas Line Repair
Repair of leaking, corroded, or damaged gas lines. Pressure testing to verify the repair before restoring gas service.
Gas Leak Detection
Professional gas leak detection using pressure testing and electronic detection equipment. We locate the leak before any repair work begins.
Appliance Gas Connections
Gas line connections for stoves, dryers, water heaters, fireplaces, generators, and outdoor grills. Flexible connector replacement and shutoff valve installation.
Gas Pressure Testing
Full system pressure testing to verify gas line integrity after installation, repair, or when purchasing a home.
Gas Shutoff Valve Replacement
Replacement of aging or malfunctioning gas shutoff valves at appliances and the main line.
Warning Signs of a Gas Line Problem
If you notice any of these signs, call us immediately. Gas leaks are a serious safety hazard.
Our Gas Line Process
Safety Assessment
We begin every gas line job with a safety assessment — checking for existing leaks, verifying shutoff valve operation, and evaluating the condition of existing gas lines.
Pressure Testing
We pressure test the gas line system to verify integrity before and after any work. This confirms there are no existing leaks and that our repair or installation is leak-free.
Permit Coordination
We pull the required permit from the local jurisdiction before beginning work. Gas line work without a permit is illegal and creates liability issues for homeowners.
Code-Compliant Installation or Repair
All gas line work is performed to Maryland code requirements — proper pipe sizing, correct fittings, adequate support, and proper bonding for CSST installations.
Final Pressure Test & Inspection
After completing the work, we perform a final pressure test and coordinate the inspection with the local jurisdiction. We don't restore gas service until the system passes.
Recent Gas Line Job — Dunkirk, MD
Recently in Dunkirk, a homeowner wanted to add a whole-home standby generator — which required a new gas line run from the meter to the generator pad on the side of the house.
We pulled the permit, ran a new 1-inch gas line from the meter, installed a dedicated shutoff valve at the generator, pressure tested the entire system, and coordinated the final inspection with Calvert County. The homeowner had their generator connected and running within two days.
This is the kind of job that requires a licensed Gas Fitter — not just a plumber. Terry Foster's dual license means we can handle the full scope of gas line work in one call, without subcontracting.
Gas Line FAQs
Can I smell a gas leak?
Natural gas is odorless, but gas companies add mercaptan — a chemical that smells like rotten eggs or sulfur — so leaks can be detected. If you smell this odor near a gas appliance or line, leave the building immediately, don't operate any switches or appliances, and call your gas company and 911 from outside. After the immediate danger is addressed, call Deep Dive Plumbing Maryland to locate and repair the leak.
Can a plumber do gas line work in Maryland?
In Maryland, gas line work must be performed by a licensed plumber or gas fitter. Terry Foster is a Maryland Licensed Master Plumber AND Gas Fitter (License #98433) — one of the relatively few plumbers in Southern Maryland who holds both licenses. This means we can legally perform all gas line installation, repair, and testing work in Maryland.
Do I need a permit for gas line work?
Yes — most gas line work in Maryland requires a permit from the local jurisdiction. Deep Dive Plumbing Maryland handles permit coordination as part of our gas line installation and repair services. We pull the permit, perform the work, and coordinate the final inspection.
What causes gas line corrosion?
Older black iron and galvanized steel gas lines are susceptible to corrosion, especially in areas with high soil moisture, acidic soil, or where the protective coating has been damaged. Corrosion can cause pinhole leaks that are difficult to detect without pressure testing. Modern gas lines use corrugated stainless steel tubing (CSST) or coated steel pipe that is more corrosion-resistant.
How long do gas lines last?
Properly installed and maintained gas lines can last 50 years or more. However, older black iron pipe, galvanized fittings, and flexible connectors at appliances have a shorter lifespan and should be inspected periodically. If your home has original gas lines from the 1970s or earlier, a pressure test and inspection is a good investment.
What appliances can be connected to a gas line?
Gas lines can supply natural gas or propane to stoves and ranges, ovens, water heaters, furnaces, boilers, dryers, fireplaces and fire pits, outdoor grills, whole-home generators, and pool heaters. If you're adding a new gas appliance, we can run a new branch line from your existing gas supply.
How is a gas leak detected professionally?
We use two methods: pressure testing (pressurizing the gas line and monitoring for pressure drop) and electronic gas detection equipment that can pinpoint the location of a leak. We always pressure test after any gas line repair to verify the system is leak-free before restoring gas service.
What is CSST and is it safe?
CSST (corrugated stainless steel tubing) is a flexible gas piping system that is widely used in modern construction. It is safe when properly installed and bonded. Older CSST installations may lack proper bonding, which can create a lightning strike risk. If your home has CSST gas lines installed before 2010, we recommend having the bonding inspected.
Can I run a gas line for an outdoor grill or generator?
Yes — this is one of the most common gas line projects we do. We run a new branch line from your existing gas supply, install a shutoff valve, and connect to your outdoor grill, fire pit, or generator. This eliminates the need for propane tanks and provides a continuous gas supply.
What should I do if I suspect a gas leak?
Leave the building immediately. Do not turn any switches on or off, do not use your phone inside the building, and do not start any vehicles in an attached garage. Call your gas company and 911 from outside. Once the immediate danger is addressed and the gas company has shut off the supply, call Deep Dive Plumbing Maryland to locate and repair the leak.
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