Tankless Water Heaters in San Diego
Endless hot water, less wasted energy, and no giant tank in the garage. Tankless works when the gas line, venting, and demand math are right. We do the math before quoting.
Tankless Water Heaters
- Tankless installation and conversion
- Recirculation system integration
- Annual descaling and flush
- Gas line upsizing when required
- Rinnai, Navien, and Rheem certified installs
Need it handled today?
Give us a call. Same-day windows available.
San Diego's tap water runs 15 to 20 grains per gallon almost everywhere in the county. That's hard enough to scale a tank water heater and cut its life short. Whether you're in Clairemont, Poway, Chula Vista, or up in Carmel Valley, annual flushing is what actually keeps a heater lasting.
Common questions
Is tankless worth it?+
For most households, yes - if you have the right gas line and venting. We tell you honestly if it does not make sense for your home.
Do tankless units need maintenance?+
Yes. Annual descaling keeps efficiency up and prevents error codes. Included with Gold and Platinum plans.
Will I ever run out of hot water?+
Not from a properly sized unit. Undersized units cannot keep up with multiple simultaneous demands.
Does San Diego's hard water really shorten water heater life?+
Yes, significantly. Countywide hardness runs 15 to 20 grains per gallon, and scale drops out of solution on the tank bottom. Without an annual flush, tank life drops from 12 to 15 years down to 8 to 10.
Do I need an expansion tank in San Diego?+
Yes. Most homes here have a pressure regulator, which creates a closed system. Code requires an expansion tank to absorb thermal expansion so your T&P valve doesn't dump.
The Lefty guarantee
Written guarantee
Every job backed in writing. If it fails, we come back.
Licensed & insured
Fully licensed technicians, insured, and background-checked.
4.9★ from 312+ reviews
Trusted by San Diego homeowners across the county.
Got a leak? Give Lefty a call.
Real diagnostics. Real prices. Real people who show up.