RESCUE SERVICE · ORANGE COUNTY CA · CODE VIOLATIONS CORRECTED

We Fix Bad Tankless Installations
Orange County CA

Quoted $3,500 to replace? We repaired for $285. Code violations left by another contractor? We correct them, pull the permit, pass city inspection. Rescue customers are our most loyal — and write our most detailed reviews.

📞 Call for Honest Second Opinion

Bad tankless installation fix Orange County CA

What We Fix After Other Contractors

Replacement quoted for a $285 repair

General plumbers misread Navien E003 and Rinnai Code 12 as unit failure. In OC’s 15–19 GPG hard water these are calcium scale blocking the heat exchanger — a professional descaling resolves them same day. “Three plumbers couldn’t fix it. The specialist solved it in minutes” is a real quote from OC competitor reviews.

Code violations left uncorrected

Improper venting. Wrong gas line size. No earthquake strapping. No permit. We see this in Old Town Tustin craftsmans, pre-2000 Tustin Ranch builds, Columbus Square shared-wall venting. We bring everything to code, document every correction with photos, and pull the permit for any work requiring inspection.

Wrong unit size for the home

A 7.5 GPM unit installed in a 4-bath Tustin Ranch home needing 9–11 GPM delivers lukewarm water during simultaneous use and wears faster. We size using actual peak demand calculation — not guesswork. Navien NPE-240A2 or Rinnai RU199iN for most large Tustin Ranch homes.

Gas line not upgraded

Pre-1995 Tustin homes have ½-inch gas supply lines that cannot sustain full tankless load. A contractor who skipped the gas line assessment left a unit that throws ignition errors under demand. We measure the gas line at every assessment — always in the written quote upfront.

No maintenance plan set up

The original contractor installed the unit and disappeared. No 12-month descaling reminder. No hard water guidance. By year 3 in Tustin’s 15 GPG water the unit is throwing error codes. We take over maintenance, perform a full service visit, and set the annual reminder going forward.

Warranty voided — permit never pulled

California requires a permit for every water heater installation. Skip it and you void the manufacturer warranty, create an insurance liability, and a resale disclosure problem. We remediate unpermitted installations by bringing work to current code and obtaining required permits where legally possible.

Real Rescue — Marcus T., Columbus Square

“Navien E003 at 6:45am Tuesday. Called at 7am, they were here by 10am. Eight years of Tustin hard water with no maintenance — heat exchanger blocked with scale. They showed me what it looked like before cleaning it. Fixed by noon for $285. I had been quoted $1,800 for a replacement the day before.”

— Marcus T. · Columbus Square, Tustin 92782

Navien E003 · Descaling · $285 · Same-day

Rescue FAQs

My tankless was installed by another company and keeps failing. Can you take over?+

Yes — this is one of our most common service calls. We assess the existing installation, identify what is wrong (maintenance, code violation, undersized unit, gas line), and give you a written quote to correct it. We do not need to have done the original installation to service the unit.

Another plumber quoted full replacement. Should I get a second opinion?+

Always get a second opinion on a tankless replacement recommendation. The most common misdiagnosis we reverse: Navien E003 and Rinnai Code 12, which generalists read as unit failure but are almost always calcium scale from OC’s 15–19 GPG water. $285 descaling versus a $4,500 replacement is a meaningful difference. We give honest second opinions and show you the math.

Can you fix an installation with code violations?+

In most cases yes. We bring installations to current Tustin and OC Building Department code, photograph every correction, and pull the required permit for work needing inspection. We document everything for your warranty file and resale disclosure.