5.0 Rating
473+ Reviews

473+ Reviews
License #1085794
100% Guarantee
Since 2021
Fullerton has very hard water at 350–400 ppm — among the hardest in our service area. This accelerates sediment buildup inside tank water heaters, reducing efficiency and shortening service life. Proper unit sizing and annual flushing are particularly important for Fullerton homes.

How We Work
Here's exactly what happens when you call So-Cal 1 — from first contact to job complete.
We assess the problem accurately before recommending any repair — no guesswork, no upsells.
You get a clear price before we touch anything. No surprises on the bill.
Licensed technicians complete the repair and test everything before we leave.
If anything isn't right after we leave, we come back. That's our guarantee.
Zip codes: 92831, 92832, 92833, 92835, 92836, 92837, 92838
Common Questions
Got questions before you call? Here's what Fullerton homeowners most often ask us about Water Heater Installation.
It depends on your household size and how you use hot water. Tankless units are more energy-efficient and never run out of hot water, making them well-suited for larger households. Tank water heaters are lower-cost upfront and simpler to service. We assess your home and give you a straightforward recommendation.
Most water heater installations in Fullerton take 2–4 hours. Tankless installations may take slightly longer if gas line or venting modifications are needed. We aim to complete same-day for most situations.
California requires a permit for water heater replacement. So-Cal 1 handles the permit pull as part of the installation — you do not need to manage this separately.
From Our Customers
Real reviews from homeowners who trusted So-Cal 1 for Water Heater Installation.