Licensed, permitted, inspected
Our technicians hold the required licenses, pull the permit as part of the job, and pressure-test new piping before any appliance is connected, so you have an inspection you can point to at resale or on a claim.

Woburn, MA · Residential + Commercial
Prime Plumbing installs, repairs, and extends gas piping for homes and businesses across Woburn and Greater Boston, from a range or dryer line to a whole-house generator. Every job is done by a licensed technician to Massachusetts code (248 CMR), with the permit pulled and the work inspected. Call (617) 354-4545.
Why it is licensed work
Massachusetts allows gas piping only by a licensed technician, under a permit, with the finished work inspected. That is not red tape; it is what keeps an undersized or leaking line from becoming a hazard.
Our technicians hold the required licenses, pull the permit as part of the job, and pressure-test new piping before any appliance is connected, so you have an inspection you can point to at resale or on a claim.
Every appliance pulls a BTU load, and the pipe from the meter has to carry all of them at once on the coldest night. Add a tankless heater, a big range, or a generator to an old line and something starves.
Leave without flipping switches or using a phone inside, and call your gas utility from outside. Once the area is safe, a licensed tech locates and repairs the leak and pressure-tests the whole line.

The most common problem we find is not a leak, it is a line that is too small for what is now hooked to it. Every gas appliance pulls a specific load, measured in BTUs, and the pipe from the meter has to carry all of them at once on the coldest night of the year with the boiler running. Add a tankless water heater, a six-burner range, or a standby generator to a line that was sized decades ago for a furnace and a stove, and something starves.
Undersized gas piping shows up as appliances that will not reach temperature, pilot lights that drop out, and burners that burn yellow and soot. So when we add or extend a line, we size it against the whole house's demand, not just the new appliance in front of us. Getting that math right is the difference between an install that works for twenty years and a string of nuisance calls.
What we do
New lines sized to the whole house, safe repairs, and the appliance and generator connections that need to be permitted and pressure-tested.

New and extended gas lines sized against the whole house's demand, run and supported properly, permitted and pressure-tested.
Gas line installation
Once the area is safe, we locate and repair the leak as licensed work and pressure-test the whole line so you know it holds everywhere.
Gas leak repair
Properly sized, permitted lines for a range, cooktop, dryer, fireplace insert, or a new furnace or boiler, with a shutoff at the appliance.
Appliance gas lines
A standby generator is one of the largest loads a home can add, so it starts with a whole-house load calculation before the line is run.
Generator gas linesFrom our customers
Mike and Cam installed our new dishwasher. Their manner was courteous and professional. I am happy with their service and recommend them.
Polite, professional & clean. I often work with Jeff: very knowledgeable and motivated. Definitely recommend Prime Plumbing.

Gas rarely stands alone. The line feeds a boiler, a water heater, a range; a leak repair is a plumbing job on a gas system; a remodel touches gas, water, and venting in the same wall. One licensed team across all of it means the pieces are coordinated and permitted together instead of handed between contractors.
Prime Plumbing works out of 271 Salem Street in Woburn, central to the homes and businesses we serve from Burlington to Cambridge and closer to the city. The company is licensed and insured, holds Massachusetts plumbing license 17347, and performs every gas job to 248 CMR with the permits and inspections the state requires. To schedule gas work or have a line checked, contact us or call (617) 354-4545.
Before you call
Tell us the appliance or the situation and we can tell you what the job involves and whether a permit and inspection apply.
In nearly all cases, yes. Massachusetts requires gas piping work to be done by a licensed technician under a permit, with the finished work inspected. That covers new lines, extensions, appliance connections, and most repairs. Prime Plumbing pulls the permit and coordinates the inspection as part of the job, and pressure-tests new piping before any appliance is connected.
Yes. Adding a branch for a gas range, cooktop, dryer, furnace, or fireplace insert is routine work: a properly sized branch, a shutoff at the appliance, and a pressure test before it goes into service. During a remodel, the time to run or move gas lines is while the walls are open, which we coordinate with the rest of the work.
That is often an undersized gas line rather than a bad appliance. When more load is added than the line from the meter can carry, appliances starve on high-demand days: burners will not reach temperature, pilots drop out, and flames burn yellow and soot. The fix is sizing the supply against the whole house's demand, which is exactly what we check before adding or extending a line.
Yes, and it starts with a load calculation. A standby generator is one of the largest gas loads a home can add and has to run at full output during an outage while the heat and hot water are also drawing gas. We size the supply for the generator plus everything already connected, run and support the line, and pressure-test it before it is commissioned. The electrical hookup is a separate trade.
Leave the building right away without using switches, phones, or anything that could spark, get everyone out, and call your gas utility from outside. Do not try to find the leak yourself. Once the utility has made the property safe, a licensed technician can locate and repair the leak and pressure-test the line before gas is restored.
Yes. Once the area is safe, we locate the leak, repair the piping as licensed and permitted work, and pressure-test the whole line so you know it holds everywhere, not just at the spot that failed. A faint persistent gas smell, a hiss at a fitting, or a pilot that will not stay lit are all reasons to have the line checked.
Ready when you are
A new appliance line, a generator supply, or a leak checked and repaired. Schedule an appointment online or call our Woburn team at (617) 354-4545.