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Water Heater Repair in Lexington, MA

54% of households in Lexington heat with gas. That is the strongest free clue to what kind of water heater is in your basement, and it decides which faults are even possible.

Answer first

The fuel a town runs on decides which faults are possible, and Lexington runs mostly on gas, at 54% of households. That figure is house heating rather than water heating, but the two rarely disagree under one roof. A gas unit fails at the pilot, the thermocouple, the gas control valve, or a flue that will not draft.

Source: US Census Bureau, American Community Survey 5-year estimates, table B25040.

HeaterRelay is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. Every state page sets out who licenses plumbers there and where to check, so you can confirm before work begins. We carry out no work, we sell no equipment, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

What Lexington runs on

Gas leads, but enough houses run on something else that local hearsay is a poor guide to your own heater.

Fuel	Share of households
Gas — mains and bottled	54%
Electricity	13%
Fuel oil and kerosene	32%
Everything else	1%

Figures from the US Census Bureau's American Community Survey, 5-year estimates, table B25040, 2023 release, covering 12,337 occupied housing units across Lexington.

That sits 7 points lower than the Massachusetts average, which is why we publish the town figure rather than the state one.

One caveat, because it matters: the Census measures the fuel a household heats the HOUSE with, not the fuel it heats WATER with. The two track each other closely — a gas line to the furnace usually feeds the tank as well — but they are not the same number.

Which one do you have

The quick test is the top of the tank. A vent pipe means combustion; no vent means elements. Settle that one question and the rest of the conversation is straightforward.

The symptom does the rest of the work. Hot water that quits early is the most informative of them; a leak from the tank itself is the most urgent.

ZIP codes we route in Lexington

02420
02421

Nearby towns, and what they burn

The nearby towns we route all lead on gas as well, so the regional pattern is consistent. It still does not tell you what is in your own house.

Wenham 47% gas
Waban 81% gas
Medford 65% gas
Lynn 58% gas
Tewksbury 72% gas

Know the fuel and the symptom? That is most of the call.Gas and electric heaters fail in almost entirely different ways, so saying which you have gets you to the right person faster. We route the call and never charge you for it. Whatever else is wrong in Lexington, mention it while we have you.

Call (866) 871-2892