Prime Plumbing technician connecting a new gas water heater with copper lines in a Greater Boston basement

Woburn, MA · Residential + Commercial

Water heater repair and replacement for Greater Boston tank and tankless

Prime Plumbing repairs and replaces water heaters for homes and businesses across Woburn and Greater Boston, tank and tankless, gas and electric. Lukewarm showers, a rusty tint, or a puddle at the base each mean something specific, and we help you weigh repair against replacement. Call (617) 354-4545.

Schedule an Appointment Call (617) 354-4545

Licensed & insuredHomes & businessesWoburn-based

Read the signs early

A water heater rarely fails without warning

Tank heaters usually give you notice, and the early signs are easy to read once you know them. The cause decides whether it is a cheap repair or a replacement.

Running out or rumbling

Showers that run out sooner mean lost capacity, usually sediment baked onto the tank bottom, and the rumble or pop when it heats is that sediment. A yearly flush clears it and adds years.

Rusty water or a wet floor

A rusty tint in the hot water only points to the tank or anode rod corroding; a slow puddle at the base is the tank itself, and that one does not get better. That is replacement territory.

Repair when the tank is sound

Thermocouples, gas valves, elements, thermostats, anode rods, and relief valves are all replaceable on a tank with life left. We diagnose before recommending, so you are not replacing a heater that needed a small part.

Navien tankless water heater and copper piping installed by Prime Plumbing on a fieldstone basement wall in Greater Boston

Tank or tankless is a real decision, not a sales pitch

A conventional tank keeps forty or fifty gallons hot around the clock and delivers a lot of hot water fast, then needs time to recover; it is simpler and cheaper to install. A tankless unit heats water only as it flows, so it never runs out on a long demand and it frees the floor space a tank occupies, but it needs a correctly sized gas line and proper venting, and it costs more up front.

Which one fits depends on your house and how you use hot water, not on which is newer. A large household running showers back to back benefits from tankless or a high-recovery tank; a smaller home with a tank in a finished space may just want a clean like-for-like swap. A tankless conversion often needs the gas supply upsized, which is where our gas piping work comes in as part of the same job.

What we do

Water heater services

Repair when the tank is sound, replacement sized to the house when it is not, and the maintenance that keeps a heater running for years.

Prime Plumbing technician testing the gas control valve on a water heater in a Greater Boston basement

Water Heater Repair

Thermocouples, gas valves, elements, thermostats, anode rods, and relief valves replaced on a tank that is otherwise sound.

Water heater repair

Prime Plumbing technician connecting a newly installed water heater with copper lines and an expansion tank in a Greater Boston basement

Water Heater Installation

A new tank sized to how your household actually uses hot water, or an honest look at converting to tankless, installed to code.

Installation & replacement

Navien tankless water heater installed by Prime Plumbing with a custom copper manifold on a mounting board in a Greater Boston basement

Tankless Water Heaters

On-demand hot water that never runs out and frees floor space, sized for cold New England groundwater and the gas line it needs.

Tankless water heaters

Prime Plumbing technician flushing sediment from a water heater tank into a hose in a Greater Boston basement

Water Heater Maintenance

A yearly flush to clear sediment and an anode-rod check, the cheapest thing you can do to push off an early replacement.

Maintenance & flushing

From our customers

Greater Boston on Prime

Great prices and good work. As plumbers go these days it is hard to find good labor that isn't doing large new builds. Rich and Rob are great at taking care of your problem for you. I've used them on rentals almost exclusively.

Nat Yong Rental property owner

Responsiveness, punctuality, quality, professionalism.

Kayleigh Scott Verified Google review

Read our reviews on Google

Prime Plumbing Navien tankless water heater installation with copper piping and recirculation in a Greater Boston home

One team for the heater, the gas, and the plumbing around it

A water heater ties into three systems at once: the water lines feeding it, the gas or electric supply firing it, and, on an indirect setup, the boiler behind it. One team that handles all of those means the heater, the line that feeds it, and the piping around it are a single job, not three trades coordinating by phone.

Prime Plumbing works out of 271 Salem Street in Woburn, central to the homes we serve from Burlington to Cambridge and closer to the city. The company is licensed and insured, holds Massachusetts plumbing license 17347, and does gas work to the state code (248 CMR) with the required permits. To talk through repair versus replacement, or a tankless conversion, contact us or call (617) 354-4545.

Before you call

Common water heater questions.

Telling us the age of the unit, whether it is gas or electric, and what you are seeing helps us arrive with the right parts.

Should I repair or replace my water heater?

It comes down to whether the tank is sound. If the steel tank is intact and a component failed, repair is usually the better value, because elements, thermostats, gas valves, anode rods, and relief valves are all replaceable. If the tank is leaking or rusted through, it cannot be repaired and replacement is the honest answer. We diagnose which you have before recommending anything.

Is a tankless water heater worth it?

For the right house, yes. A tankless unit never runs out on a long demand and frees the floor space a tank takes, but it costs more up front and needs a correctly sized gas line and proper venting. A large household running showers back to back benefits most; a smaller home may be better served by a straightforward tank swap. We lay out the trade-offs for your situation rather than pushing one option.

Why is my hot water rusty or discolored?

If only the hot water is rusty and the cold runs clear, the discoloration is coming from the water heater, usually a corroding tank or a spent anode rod. A spent anode caught in time is a cheap fix that protects the tank. Rust that comes with a tank near the end of its life, or with a wet floor, points toward replacement. It is worth having looked at before the tank fails outright.

Why does my water heater make a rumbling or popping noise?

That sound is sediment. Minerals settle to the bottom of the tank and bake into a crust that traps water under it, and the popping is that water boiling through the layer. It makes the heater work harder, recover slower, and corrode faster. Draining and flushing the tank clears the sediment, and doing it yearly is the cheapest way to extend the heater's life.

How long does a water heater last?

A conventional tank commonly lasts around ten to fifteen years, and a tankless unit longer, but water conditions and maintenance move that a lot in either direction. A tank that is flushed yearly and has its anode rod checked outlasts one that is never touched. When yours starts showing the early signs, planning the replacement beats waiting for a failure and a wet floor.

Do you handle the gas line for a tankless conversion?

Yes. A tankless unit pulls a large gas load, so the existing line and meter often need to be confirmed or upsized, and all gas work in Massachusetts must be done by a licensed technician to the state code (248 CMR) with a permit. Because we handle both the water heater and the gas piping, the conversion is one job with one team.

Ready when you are

Water heater trouble in Greater Boston?

Tell us what you are seeing and whether the unit is gas or electric. Schedule an appointment online or call our Woburn team at (617) 354-4545.

Schedule an Appointment (617) 354-4545