Tankless water heater installation in San Diego
Tankless water heaters heat water only when you use it. The Department of Energy says they generally last up to about 20 years, compared with 10 to 15 for tank models, and they cost more up front.
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San Diego adds two local wrinkles. In the City of San Diego, tankless installations need a plan-required plumbing permit rather than the simple permit used for tank swaps. And San Diego's water is hard, which matters more for tankless units than for tanks.
When tankless makes sense
- Your tank heater is due for replacement and you want longer life
- You run out of hot water with back-to-back showers
- You want to free up closet or garage space
- You are remodeling and can plan the gas, venting and electrical work
How a tankless installation works
Size it to your household
Tankless units are sized by flow rate, in gallons per minute, and by how much they need to heat the incoming water. An undersized unit runs lukewarm when two showers run at once.
Plan gas, venting and power
Converting from a tank often means a larger gas line, new venting and an electrical outlet for the unit. These upgrades are a big part of the cost.
Permit and install
In the City of San Diego this is a plan-required permit. The installer mounts the unit, connects gas, water and venting, and sets it up.
Protect it from hard water
Ask about scale protection and a flushing schedule. Manufacturers may require a water softener when water is harder than roughly 8 to 14 grains per gallon.
Questions about tankless water heater installation
How long does a tankless water heater last?
The Department of Energy says up to about 20 years, compared with 10 to 15 years for a tank, with regular flushing to remove scale.
How often does a tankless water heater need flushing?
Anywhere from twice a year to once every three years, depending on the manufacturer and your water. In hard-water areas like San Diego, lean toward the more frequent end.
Do I need a permit for a tankless water heater in San Diego?
Yes. In the City of San Diego, tankless water heaters need a plan-required plumbing/gas permit. Other cities set their own rules.
Tankless Water Heater Installation by area
Other water heater services
Water Heater Replacement
Replacing an old or failed tank, with the permit, straps and code upgrades done right.
Water Heater Repair
No hot water, a pilot that will not stay lit, a dripping relief valve or strange noises.
Leaking Water Heater
Water around the heater? What to shut off now, and whether it can be fixed.
No hot water, or a leak at the tank?
Get connected with a licensed water heater company serving San Diego County.