Where leaks show up in Belmont
Where the unit sits decides how urgent a leak is, and in Belmont that is not uniform. Utility room, closet and crawlspace through the mill villages, where the space around the heater is often just large enough for the heater that is in it. Garage in the newer building. If you are replacing in a mill house, the size of the doorway matters as much as the size of the tank.
That matters more than the leak itself. Water escaping from a unit in a garage is an inconvenience. The same leak from an attic or an upper-floor closet is a ceiling, and it is the one case where we would rather you shut the cold inlet and call than wait for the morning rate.
- From the tank body: the unit is finished. A perforated shell cannot be patched, and anyone who says otherwise is selling you a delay.
- From the relief valve discharge: usually pressure rather than a failed valve. Put a gauge on a hose bib before replacing anything.
- From a fitting or connector: genuinely repairable, and frequently a $150 to $300 job rather than a replacement.
- Pooling with no obvious source: often condensate or the pan drain rather than the heater, which is worth establishing before anyone quotes you a tank.

What Belmont itself changes
The housing in Belmont
Nearly twenty textile mills were built in Belmont up to 1930, and the mill villages that housed their workers are still standing and still lived in. Those are small, older houses with small, older utility spaces, and they sit alongside a wave of newer riverside and infill building that has arrived in the last fifteen years. The two need different conversations: the mill houses are usually a question of what will physically fit and what the wiring will carry, the newer builds are a straight repair-or-replace decision.
The pipe era
The mill-village stock is where galvanised supply is most likely to still be in service in Belmont, and it restricts hot and cold together. Newer riverside building is copper or PEX.