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Reg 9 · Rule 6 New gas water heater installations end January 1, 2028 in the Bay Area. Existing units are unaffected. See how it affects your replacement →

How Tankless Water Heaters Work

Tuesday, February 11, 2020
man showering

Saving money on water and electric bills is possible with tankless water heaters in Pleasanton, CA. By installing the right equipment in your home, you can cut down on water use and power consumption. A tankless water heater is better insulated, which keeps your water hotter for longer. You no longer have to worry about running out of hot water in the middle of your shower, since this specialized piece of machinery offers continuous heating.

Understand Traditional Heaters

Traditional water heaters fill with cold water, which is then heated and sent up through your home’s plumbing, giving you hot water. However, once the water stored in the tank is depleted, it then must fill up again, heat the water again, and send it back through your home. This can be a time-consuming process if you’re waiting to take a shower after using up all the hot water that was in the tank.

Instead, a tankless water heater works by only heating the water when you need it. The water is pumped through the system and is continuously heated by either gas or electricity. This ensures your water is consistently hot, and your supply doesn’t run out, which is why installing a tankless water heater is a valuable investment when considering the long-term savings.


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★★★★★Tank replacement · Bay Area
Joseph arrived promptly and diagnosed the issue fast. He explained the work, the timeline, and each part as it went in. Very professional and competent.
Karen WilcoxVerified · 2026
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Lee arrived quickly, identified the problem, and solved it fast with no upselling. I'd recommend him to anyone who needs service.
ArmanVerified · 2026
★★★★★Tank replacement · Bay Area
Best customer service on a water heater, ever. We had three leaks and needed a new unit. Joseph showed up in a heatwave with a great attitude.
Michael BuckVerified · 2026
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Bay Area
Service area
Cities covered
East Bay
Oakland, Berkeley, San Leandro, Castro Valley
San Francisco & Peninsula
San Francisco, South San Francisco, Redwood City
Tri-Valley
Dublin, San Ramon, Pleasanton, Livermore
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San Jose, Santa Clara, Sunnyvale
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