Water Heater Repair
No hot water, not enough hot water, a rumbling tank or a leak at the base. We find the fault and tell you honestly whether it's worth repairing.
- Plumbing license
- 1310027098-PL-CMA licensed
- Shop
- 99 Felton StWaltham, MA
- Service call
- Free$89 fee only if you go ahead
- Workmanship
- 5 yearsNo labor charge
- Hours
- 8am–8pmMonday through Friday
What water heater problems do you repair?
We diagnose and repair the common faults on gas and electric tank water heaters:
- No hot water, or hot water that runs out quickly
- Water that’s too hot or temperature that swings
- Rumbling or popping from sediment in the tank
- Leaking valves and connections
- Failed thermostats, heating elements and pressure relief valves
- Rust-colored or cloudy hot water
Repair or replace?
Our team will assess your system and give you honest recommendations: repair it if that makes sense, replace it if it’s time. A tank that’s corroding from the inside — rusty water on the hot side only, or water weeping from the shell — can’t be repaired, and we’ll say so.
How can I help the visit go faster?
Have this ready when you call:
- What the problem is
- Where the unit is located
- How old it is (the serial number usually encodes the year)
- Whether it’s gas or electric
5-Year Workmanship Guarantee
We stand behind how we do the work for five years. If something fails because of our installation or repair, we come back and correct it — no labor charge.
Covers Colt's workmanship. Parts carry the manufacturer's warranty. Excludes pre-existing conditions, customer-supplied fixtures, and freeze or misuse damage. Read the full termsCommon questions
Is it worth repairing an older water heater?
Often a failed thermostat, element or valve is a straightforward repair. A tank that is leaking from the shell is not repairable. We'll tell you which one you have and give you a written price for either option.
What does a water heater repair visit cost?
The service call is free. A licensed plumber comes out, diagnoses the problem and gives you a written price before any work starts. If you go ahead with the repair, there's an $89 service fee on top of that price; if you don't, you pay nothing.
Do you repair tankless water heaters too?
Yes — see our tankless water heater page for the common faults we fix and the descaling maintenance these units need.
Related plumbing services
Water Heater Installation
Replacement and correct sizing, with code-compliant venting and expansion control.
Tankless Water Heaters
Installation, repair and descaling for on-demand systems.
Leak Detection
Finding it before opening the wall, not after. Slab, supply and behind-wall leaks.
