Every water heater in Hebron is fed by a private well, a lot of them drilled into shallow ledge, and that changes both what you should buy and how long it will last. We size for the house and the water, set the unit up to be serviced, and tell you honestly when the old one is worth saving.
There is no public supply in this town. The Master Plan puts it in one line — water and sewer are privately maintained throughout the community — and that single sentence is most of what makes a Hebron water heater different from one in a Laconia subdivision. No utility is treating your water before it reaches the tank. Whatever the well gives you goes straight into the bottom of that heater and stays there.
And the geology here is not gentle on a tank. The county soil survey that Hebron still works from puts a lot of the town in shallow-to-bedrock and hardpan glacial till ground, with outcrops described as few to many — which on the hill roads means wells into ledge. Ledge water carries dissolved minerals. Those minerals come out of solution on a hot surface, and in a tank heater they settle on the bottom as scale while the anode rod spends itself protecting the steel. A tank that would see twelve years on treated municipal water can give you eight here, and it will usually tell you first by getting noisy.
The other half is how the building gets used. Sixty percent of Hebron’s housing stock was seasonal at the last Census that counted it, and a good share of today’s year-round houses are converted camps. A heater in that kind of building has a strange life — four months of nothing, then eleven people over a long weekend in July, then nothing again. Sizing for an average household is the wrong exercise. We size for the actual peak and the actual idle.
Ask for the anode rod to be left with real headroom above it. Hebron water eats rods, and a rod you can actually pull in twenty minutes is the cheapest extra years you will ever buy on a tank.
Most heaters get replaced with whatever came out, which is fine if the old one was right and a mistake if it wasn’t. A forty-gallon tank that ran out every morning for a decade will do exactly that for the next one. So the questions are how many showers run back to back on your worst morning, whether there’s an oversized tub, and how long the place sits cold between visits. In a Hebron camp the honest answer is often a bigger tank than the house has ever had, or an indirect off a boiler that’s already heating the building.
Tankless is genuinely good in the right house here and oversold in the wrong one. The item the brochure skips is incoming water temperature. A unit rated on warm inlet water loses a large share of its output when what’s arriving is in the low forties, which is normal off a deep Hebron well for most of the year. Plenty of output in a warm climate, short of a second shower in a New Hampshire January. We size against the cold-inlet reality. For a propane conversion that also means looking honestly at gas line capacity and venting before anybody promises a number.
Then the part that decides the next ten years: how the thing is set so it can be looked after. Drain valve low and reachable, so a yearly flush of the sediment is a ten-minute job instead of an argument. Anode rod accessible, with the clearance overhead to actually pull it — it’s a consumable, and on ledge water it’s the consumable that decides the tank’s lifespan. Expansion tank and the code-required safety fittings in place. On a house that gets shut down every fall, the whole unit has to be drainable without a disassembly.
A standard electric tank installed in Hebron starts around $2,400. A 65–80 gallon electric runs $5,000–$7,000, propane $6,000–$9,000. Tankless is $9,000–$13,000 installed, with gas piping and venting quoted as part of the job. An indirect piped off a boiler that’s already there runs $2,200–$3,400; a new boiler starts at $16,000. Repairs on a unit worth keeping run $500–$700.
Because nothing is treating the water before it gets there. Much of this town draws off wells in shallow ledge and hardpan till, and that water carries minerals that drop out as scale on a hot surface while the anode rod corrodes away protecting the tank. Eight to ten years is a realistic life here rather than twelve to fifteen.
Sometimes, and the deciding factor is inlet temperature, not the well. Water arriving in the low forties cuts a tankless unit’s usable output hard, so the model has to be sized against that rather than against the brochure rating. Mineral content also means descaling becomes part of owning one. We’ll say when it doesn’t pencil out.
It’s a sacrificial metal rod inside the tank that corrodes so the steel liner doesn’t. Once it’s consumed, the tank starts rusting from the inside and the clock runs fast. On well water it goes sooner, which is why we care about leaving one you can physically reach and replace rather than one buried under ductwork.
Not necessarily — that noise is usually sediment on the bottom, water flashing to steam under a layer of scale. A flush and a look at the anode sometimes buys years. Sometimes it’s the sound of a tank already weeping at a seam. We’d rather drain it and look than sell you one you don’t need yet.
A lot. It means the unit has to be fully drainable every fall without a fight, and it means the right size is driven by your busiest weekend rather than by a weekly average. It also means a heater sitting idle and half-full is a corrosion problem, which is a good argument for draining it properly rather than leaving it warm.
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