Service
Water Heater Repair & Replacement
Tank, tankless, and recirculating systems for Marin County homes and businesses.
Repair & Service
Water Heater Repair
Most water heaters fail for one of three reasons: sediment buildup, a failed heating element, or a faulty pressure-relief valve. Sediment is the most common. Cold water carries minerals that settle at the bottom of the tank and form a layer between the burner and the water. You hear it as a rumbling or popping sound. Over time it overworks the unit and shortens its life significantly.
Mason Plumbing flushes sediment, replaces anode rods, fixes leaks, and diagnoses control and thermostat issues. When repair makes sense, we repair. When a tank is past 10–12 years old with a major failure, we’ll tell you that honestly and help you choose the right replacement.
Upgrade & Save
Tankless Water Heaters
A tank heater keeps 40–80 gallons of water hot around the clock, even at 2am when no one is using it. A tankless unit heats water on demand in seconds, with no standby heat loss. That single difference accounts for up to 35% in gas savings and pushes efficiency to 83–94% versus roughly 60% for a standard tank.
Tankless units last 20 or more years compared to 8–12 for a tank. The upfront cost is higher, but the long-run math almost always favors tankless. We size the unit by flow rate (gallons per minute) so you always have enough hot water, and we can install multiple units for large homes with high simultaneous demand.
More Ways to Save WaterNo More Cold-Water Wait
Hot Water Recirculating Pumps
In a standard plumbing system, the water sitting in the pipes between the heater and the tap cools down. When you turn on the shower, that cold water has to run out before hot water arrives. In a larger Marin home that can mean 30–60 seconds of wasted water every single time.
A recirculating pump keeps hot water moving through the loop so it’s ready the moment you turn on the tap. The average household saves 31 gallons of water a day, roughly 11,461 gallons a year. In drought-conscious Marin County, that adds up over time. The right setup depends on your home’s plumbing and hot-water loop, and we size the system and explain what the installation involves before we begin.
Our warranty: factory warranties on company-supplied materials and a 2-year labor warranty on all plumbing installations.
Need water heater service in Marin County?
Whether you need a repair, a replacement, or a recirculating pump installed, Mason Plumbing gets it done right.