Home › New Hampshire › Merrimack

Water Heater Repair in Merrimack, NH

57% of households in Merrimack 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 Merrimack runs mostly on gas, at 57% 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 Merrimack runs on

A split town, gas ahead. Establishing which type sits in your own basement saves the first ten minutes of any call.

Fuel	Share of households
Gas — mains and bottled	57%
Electricity	9%
Fuel oil and kerosene	28%
Everything else	5%

Source: US Census Bureau, American Community Survey 5-year estimates, table B25040 (house heating fuel), 2023 release. Universe: 10,378 occupied housing units in the ZIP code areas covering Merrimack.

New Hampshire statewide runs 11 points higher on gas, so this town is not typical of it.

Strictly, the survey asks what heats the home. Water heating almost always runs on the same supply, but the two can differ in one house without differing in the town.

Which one do you have

If you are not sure, look at the top of the tank: a flue pipe going up into the ceiling means gas, and no flue at all means electric. 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 Merrimack

03054

Nearby towns, and what they burn

Fuel is not uniform across a region. Five of the nearby towns we route lead on something other than gas, which is why a diagnosis that fits one town does not travel.

New Ipswich 51% fuel oil
Loudon 46% fuel oil
Hillsborough 47% fuel oil
Belmont 61% fuel oil
Kingston 50% fuel oil

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. The line covers more than water heaters in Merrimack.

Call (866) 871-2892