Plumbing · Navien Certified · South Shore MA
Water Heater Repair & Replacement
No hot water, not enough hot water, or a tank that is starting to weep. We repair and replace tank, indirect, heat pump, and tankless water heaters across the South Shore—permitted, code-compliant, and usually same or next day.
Tank actively leaking? Shut the cold supply valve on top of the heater, kill the power at the breaker (electric) or turn the gas control to OFF, then call (781) 974-5239. A weeping tank does not get better—it gets worse quickly.
Symptoms and What They Usually Mean
No hot water at all
On gas, usually a failed thermocouple, pilot assembly, or gas control valve. On electric, a tripped high-limit or a burned-out element. Often repairable.
Runs out fast
Sediment buildup stealing capacity, a failed lower element, or a tank that is simply undersized for how the household actually uses hot water now.
Water on the floor
If it is coming from a fitting or the T&P valve, that is a repair. If it is seeping from the tank seam itself, the tank is done—no patch is legitimate.
Rumbling or popping
Sediment hardened on the bottom, boiling water trapped beneath it. A flush may help early on. Left long enough it cooks the tank bottom and shortens its life.
Rusty or smelly hot water
A spent anode rod. Replace it in time and you extend the tank’s life considerably. Ignore it and the tank corrodes from the inside out.
Tankless throwing codes
Usually scale in the heat exchanger, a dirty flame rod, or a venting fault. Most clear with a proper descale and service rather than replacement.
Choosing the Right Replacement
There is no single best water heater—there is the right one for your fuel, your space, and how your household actually runs. Here is how we think about it.
Standard tank (gas or electric). Lowest up-front cost, simplest swap, proven. Typically 10–13 years on the South Shore. Right answer for a lot of homes, and we will say so rather than upsell you.
Indirect-fired. If you already have a boiler, an indirect tank uses it to make hot water and often outlasts everything else in the basement. Excellent pairing with a new high-efficiency boiler.
Tankless (Navien). Endless hot water, wall-mounted, frees up floor space, and long-lived when maintained. Needs adequate gas supply and proper venting, and it wants an annual descale—especially on well water. We are Navien Certified and install these regularly.
Heat pump water heater. The efficiency play, and the one carrying meaningful Mass Save incentives. Needs enough surrounding air volume and produces cool, dry exhaust—which some basements welcome and others do not. We will tell you honestly whether your space suits one.
What a Correct Installation Includes
A water heater swap is not just unhooking one and hooking up another. Done properly it includes a permit and inspection through your town, a correctly sized thermal expansion tank if your home is on a closed system, a full-port shut-off valve, a proper T&P discharge line run to a safe termination, dielectric unions where dissimilar metals meet, and vent verification on gas units so combustion gases go outside rather than into your basement.
We haul the old unit away, and we do not leave you to discover a missing expansion tank three years later when your relief valve starts dripping.
Common Questions
How long should a water heater last?
Ten to thirteen years for a standard tank in this area, longer for indirect and tankless when maintained. Hard water shortens all of it. If yours is past twelve and needs a significant repair, replacement is usually the better spend.
Can you replace it the same day?
Standard tank replacements, usually yes. Tankless conversions and heat pump units take longer because gas sizing, venting, condensate, or electrical work may be involved.
Do I really need a permit?
Yes. Massachusetts towns require a plumbing permit and inspection for water heater replacement. It protects you at resale and at claim time. Any contractor offering to skip it is telling you something about how they work.
Is a tankless worth it?
If you run out of hot water regularly, want the floor space back, or plan to stay in the house a long while—often yes. If you are selling in two years and your current tank is fine, probably not. We will give you the straight answer.
Free homeowner tool
Will you run out of hot water?
Tap what runs at the same time on your worst morning. We will show you how many minutes your tank lasts before it goes cold, whether tankless fixes it, and what each option costs to own over 20 years.
Out of hot water?
Ask about our $100 off water heater installation while you are at it.