Tankless Water Heater in Escondido, CA

Escondido conditions to know

The City of Escondido runs its own water utility. Local supply comes from the watershed and well fields near Lake Henshaw, carried by the San Luis Rey River and the Escondido-Vista canal to Lake Wohlford, and imported water from the San Diego County Water Authority is stored in Dixon Lake. Both are treated at the Escondido-Vista Water Treatment Plant and disinfected with chloramine. The city reports hardness averaging 215 mg/L as calcium carbonate, within a tight 210 to 230 range, which is hard enough to scale a tankless heat exchanger without regular flushing.

Permits matter here too. The Escondido Building Division's exemption guideline covers only minor work such as clearing stoppages or repairing leaks in pipes, valves and fixtures. Replacing a heater, adding gas piping or cutting a new vent goes beyond that, so a tankless conversion should be permitted; the division is at (760) 839-4647.

Tankless compared with a new tank

Signs to act

• Your tank leaks at the base or the relief valve drips
• Hot water runs out partway through the evening routine
• An existing tankless unit's hot flow has dropped noticeably
• A scale or overheat error appears after long showers
• The heater is old enough that a failure would be a surprise only in its timing

Timing and seasonal notes

Escondido's inland valley gets cooler winter nights than the coast, and colder incoming water means a tankless unit has to work harder in January than in August. Size for winter demand. Spring and fall give more scheduling flexibility for a planned replacement. For questions about the city's water, call Utilities Administration at 760-839-4662. If you smell gas, leave the home first, then call 911 and SDG&E at 1-800-611-7343 from a safe place.