No hot water, rusty water, or a tank that’s finally leaking — we replace and repair water heaters across Alton, sized properly for the house instead of just matching whatever was there.
Alton Bay is the seasonal heart of the town — the tightly packed camps and cottages around the bay, the Christian Conference Center campus, and the shoreline lots off Mount Major Highway. Much of that housing was built as summer property on small lots, close together, and it shows in the plumbing: shallow water lines, minimal insulation under floors, and supply runs that were never designed to see a New Hampshire January.
Move up Route 28 or out toward Alton Mountain Road and Roberts Cove, and you’re into year-round homes on drilled wells with real basements. Further out toward New Durham and Barnstead, the lots get big, the driveways get long, and the frost gets serious — well lines that come in shallow through a slab or crawlspace are the first thing that freezes when the ground gets cold and there’s no snow cover to insulate it.
Alton also has a meaningful stock of camps that have been quietly converted to year-round living over the last twenty years, usually a room at a time. Those are the houses we get called to in the middle of a cold snap. The heat is fine, the insulation upstairs is fine, but the original water line still runs through a crawlspace with a vent that’s been open since 1972.
Boat-access and shorefront work is a real part of the job here too, and the same rule applies as everywhere on the big lake: once the bay starts to skim over, the window for waterside work is closed until spring.
If your Alton camp has a crawlspace with foundation vents, close and insulate them before the first hard freeze — and check that a previous owner didn’t already stuff them with something that fell out. Open crawlspace vents are the most common cause of frozen pipes we see in this town.
Most water heaters get replaced with whatever was there before, which is fine if the last one was right and a mistake if it wasn’t. A 40-gallon tank that ran out of hot water every morning for twelve years will do exactly the same thing for the next twelve. We ask what actually happens in your house — how many people, how many showers back to back, whether the tub is oversized — and size from that.
Tankless is genuinely good in the right house and oversold in the wrong one. The thing nobody mentions in the brochure is incoming water temperature: a tankless unit rated for a warm climate loses a large share of its output when the well water coming in is in the low 40s, which is normal here for much of the year. A unit that delivers plenty in Virginia can leave you short in a New Hampshire January. We size for the cold-inlet reality, not the box.
For seasonal camps there’s a third consideration: whatever goes in has to be drainable, because it’s going to be shut down every fall for the life of the unit.
Installed, a standard tank water heater in the Lakes Region typically runs $1,400–$2,600 depending on size and fuel; a tankless unit runs $3,800–$6,800 installed, more if gas line or venting work is needed. Repairs to a unit worth saving usually run $200–$600.
A standard tank water heater generally lasts 8 to 12 years. Hard or acidic well water — common across the Lakes Region — shortens that, sometimes considerably. If yours is past ten and you are seeing rust in the hot water or moisture around the base, you are on borrowed time and better off replacing on your schedule than on its.
In a year-round house with high hot water demand, often yes — endless hot water and lower standby loss. But New Hampshire's cold incoming water cuts a tankless unit's real output well below its rated flow, so it has to be sized bigger than the label suggests. In a small or seasonal camp, a tank is usually the better value.
Usually yes. Most plumbing installations and major replacements in New Hampshire require a permit from the local building department or the state, and your licensed plumber pulls it. It matters more than people think — an unpermitted install can complicate an insurance claim and a future sale.
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