Cold showers, a rumbling tank, a pilot light that won't stay lit, or a tankless unit throwing an error code — a failing water heater rarely fixes itself, and most failures give warning signs first. Our Onset technicians diagnose both tank and tankless systems on the first visit.
Our Onset technicians are trained across both fuel types and both system designs, not specialized in just one.
Trucks stocked with common water heater parts are staged across Onset for same-day response.
You'll know the diagnostic and likely repair cost before we open the access panel.
We won't recommend a costly repair on a unit that's already past its expected service life — you'll get an honest comparison.
From a simple pilot light relight to a full heating element replacement, our technicians carry the parts most repairs need on the truck.
We service both gas and electric tank systems, replacing the specific failed component rather than the whole unit when possible.
Tankless systems need descaling and flow sensor cleaning periodically — we service both the repair and that maintenance.
A pilot light that won't stay lit is usually a failed thermocouple, a straightforward and affordable fix.
Sediment buildup at the tank bottom reduces efficiency and causes rumbling; a flush and inspection often restores performance.
We isolate the source of a water heater leak first, since it's not always the tank itself failing.
A total loss of hot water gets same-day priority dispatch, especially in colder months.
A quick call gets a technician scheduled, usually same-day for a total loss of hot water.
Our technician arrives with common repair parts for both tank and tankless systems already on the truck.
The unit is diagnosed, and you'll get a clear repair price — or an honest replacement recommendation if the unit's beyond economical repair.
Once hot water is restored and tested, you get a warranty on both the part and the labor.
"Thermocouple went out on a Sunday and they had a tech out with the part already on the truck." — Homeowner, Onset
"Told me honestly the tank was past saving and walked me through replacement pricing instead of patching it." — Onset resident
"Explained the difference between the heating element and thermostat issue clearly before quoting the repair." — Onset customer
We serve Onset proper and nearby Onset, MA communities on both tank and tankless systems.
As a general guide, a unit past 10-12 years with a major component failure often makes more sense to replace.
Yes, our Onset technicians are trained and equipped for both fuel types.
Rumbling is a common early warning sign of sediment buildup, worth addressing before it worsens.
Most single-component repairs, like a thermocouple or heating element, are completed in under two hours.
Tankless systems need different maintenance than tank units, and our technicians are trained specifically for that.
Not always — sometimes it's a fitting or the T&P valve, not the tank itself, and those are repairable.
