Tankless Water Heaters
Tankless Water Heater Installation, Repair & Replacement
Endless hot water, wall-mounted and space-saving.
Overview
What to expect.
A tankless water heater heats water only when you turn on the tap, so you don't run out halfway through the third shower. Green Core installs Navien tankless water heaters for homes across Sonoma and Marin counties.
Tankless units mount on a wall and free up the floor space a tank used to take. Modern condensing models like Navien vent through PVC pipe and are very efficient with gas.
Getting tankless right comes down to sizing and gas supply. A tankless unit needs more gas at once than a tank, so we check your gas line, meter, and venting route before recommending one. We size the unit to how many showers and appliances you run at the same time.
Tankless water heaters need a yearly flush to clear mineral buildup and keep them running efficiently. We can take care of that maintenance, along with repairs on existing tankless units.
Tankless installs are priced to your home, since cost depends on gas line and venting needs. You'll get a clear written price before we start. We serve Petaluma, Santa Rosa, Rohnert Park, Novato, San Rafael, Mill Valley, Tiburon, and the rest of Sonoma and Marin.
Benefits
Why homeowners choose this.
Endless hot water
Heats on demand, so back-to-back showers aren't a problem.
Saves space
Compact, wall-mounted unit instead of a 50-gallon tank.
Long life
With yearly maintenance, tankless units often last well beyond a tank.
Sized correctly
We check gas supply, venting, and peak demand before we install.
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FAQ
Frequently asked questions
Is tankless worth it?
For larger households, or anyone who runs out of hot water, it often is. You get endless hot water and a smaller footprint. The tradeoff is a higher up-front cost than a tank, especially if your gas line needs upgrading.
Will I need a bigger gas line?
Sometimes. Tankless units use more gas at once than a tank. We check your gas line and meter during the estimate and include any upgrade in your written price.
How long do tankless water heaters last?
With yearly maintenance, tankless water heaters commonly last 15 to 20 years, longer than most tank water heaters.
Do tankless water heaters need maintenance?
Yes. A yearly flush removes mineral buildup and keeps the unit efficient. We can handle that for you.
What brand of tankless water heater do you install?
We install Navien tankless water heaters.
Can you repair my existing tankless water heater?
Yes. We diagnose and repair tankless units, and we'll tell you honestly if replacement makes more sense.
Ready to talk tankless water heaters?
Share a few details about your home and we'll reach out with clear, honest options.