Water Heater Installation in Nantucket, MA
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What a Nantucket winter asks of a new water heater
Heating season here runs eight months, October through May, with winter nights averaging 28°F. Incoming water is cold that whole stretch, so a new water heater is working to close a bigger gap than it would somewhere with a shorter winter.
The island loses power in storms. Ten years of records show 7 winter storms and 60 damaging wind events, and across Massachusetts one household in ten went at least 24 hours without power in 2024. A gas water heater with a standing pilot keeps making hot water through an outage like that. One that relies on an electric igniter does not, and neither does an electric tank. Worth weighing when you pick what replaces the one you have now.
- 28°F
- the average winter night, and colder incoming water means longer heating
- 8 months
- October through May, the months homes here need heat
- 10%
- of Massachusetts households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
- How do I know it's time to replace my water heater?
- Most tank water heaters last 8 to 10 years, so age is the first thing to check on the data plate near the top of the tank. Beyond that, watch for water that doesn't get as hot as it used to, rust-colored water, a tank that's rusting on the outside, or puddles forming underneath it. Rust and leaks mean the tank itself is failing, and that's not something that gets patched. If your unit is already past that age and starting to act up, replacing it before it fails is usually easier than dealing with a flood.
- Should I switch to a tankless water heater?
- It depends on what you want out of it, not on your old tank failing. A tankless unit heats water as you use it instead of storing a tankful, so you get endless hot water and it stops using energy the moment no one's running a tap. What it doesn't do is fix a house with weak water pressure or old, undersized pipes, since those problems follow the water wherever it's heated. A contractor can look at your existing setup, your gas line or electrical panel, and your household's hot water use to tell you whether tankless makes sense for your house specifically.
- What changes when you install a tankless water heater?
- The biggest change is that you stop having a tank of hot water sitting ready and start heating water on demand instead. That usually means new venting, since tankless units vent differently than a tank does, and it can mean upgrading the gas line or adding a dedicated electrical circuit depending on the model. The unit itself mounts on a wall instead of taking up floor space, which frees up a corner of the basement or utility closet. A contractor will also plan the venting and any exposed piping around where the unit sits, since that varies from house to house.