Tankless Water Heater Maintenance Fountain Valley
If you live in Fountain Valley and own a tankless water heater, you need regular maintenance to keep it working right. Tankless water heater maintenance Fountain Valley homeowners depend on includes flushing the system, cleaning the filters, and checking gas pressure and ventilation. We do all of that and more—quick, local, and done right the first time.
Most people don’t realize these units need annual flushing. Hard water in Orange County builds up inside, and when that happens, the system overheats, shuts down, or throws error codes. We see it every week. That’s why our team brings high-tech flushing pumps, acid-neutral scale removers, and digital gas pressure gauges to get your system clear and calibrated.
Whether it’s a Navien, Rinnai, Noritz, or Takagi—we’ve got the right tools to get it done clean. Call now and we’ll come out, flush your system, and make sure it’s good for another year.
Story From Fountain Valley – Near Fulton Park
A couple off Talbert and Newhope had a Rinnai tankless unit that started showing an error code every few days. They’d reset it, but the hot water was starting to fluctuate bad. When we got there, it had never been flushed—not once in 4 years.
We hooked up the descaler and ran a full food-grade descaler flush—not vinegar and definitely not CLR, which is not food-grade and can be dangerous. When we pulled the filter screen, it was nearly solid with sediment. After a deep clean and gas pressure check, it fired up smooth and stayed hot. They signed up for yearly maintenance after that.
Why Regular Tankless Maintenance Is a Must
Tankless units are not zero-maintenance. Without cleaning, minerals clog up the heat exchanger and restrict water flow. That leads to shutdowns, overheating, and shorter unit life.
Annual maintenance prevents:
- Error codes like 11, 12, 16, and 29
- Scale buildup inside the heating chamber
- Flow sensor and flame rod failures
- Noise from overheating or poor ignition
We flush out all the junk, check the filters, and inspect for early failure signs.
Need a Local Plumber In Fountain Valley?
Professional Plumbing provides free plumbing inspections for current homeowners during business hours. A small fee applies for homes in escrow or for sale, which can be credited toward repair costs if we're hired.
Homeowner Prep – Things You Can Do
You don’t have to do anything before we show up, but if you want to help us move faster (and maybe save a few bucks), here’s a few suggestions:
Clear the area around the unit so we can reach the service valves. If it’s in the garage, moving a few boxes or tools helps. If it’s outside, check for overgrown bushes or fences that block access. Let us know if you’ve had recent issues—fluctuating water temp, codes on the display, or leaks.
We’re happy to handle it either way—it just helps speed things up.
DIY Tankless Maintenance Mistakes in Fountain Valley
We’ve seen people try to flush these themselves with hoses and vinegar jugs. One guy didn’t close the cold inlet and ended up flooding his garage. Another homeowner used CLR in a Navien—it ate the gaskets and damaged the internals. CLR is not food grade and is toxic.
These systems need descaling solutions made for stainless steel heat exchangers. They also need proper pump flow, temperature regulation, and valve prep.
Trying to do it without the right pump or adapters can damage the system—or just not clean anything.
FAQs – Tankless Water Heater Maintenance Fountain Valley
We recommend once a year. Hard water in Fountain Valley clogs them faster.
You’ll start seeing error codes, shutdowns, or heating delays. It can also void the warranty.
Usually 60–90 minutes. We flush, clean filters, and test the full system.
Yes, we work on Navien, Rinnai, Noritz, Rheem, Takagi, and more.
You technically can if you have the right flush kit, food-grade descaler, and know how to shut off the valves. But we’ve seen too many people flood garages, damage internal parts, or use toxic cleaners like CLR. We recommend calling a pro—especially for gas and venting checks.
