Noritz Installer · Tustin CA · Stainless HX · 25-Year Warranty
Noritz Tankless Water Heater Installer — Tustin CA
Noritz offers the best hard water warranty in the residential tankless category — up to 25 years on the stainless heat exchanger. Our recommendation for North Tustin, Villa Park, and long-term Tustin Ranch homeowners who want maximum protection in OC’s 15 GPG water.
📞 Free Noritz AssessmentWhy Noritz for Tustin’s Hard Water
Tustin’s 15 GPG water supply from MWDOC — sourced from the Colorado River and the State Water Project — is among the hardest water in the country. It accumulates calcium and magnesium scale on heat exchanger walls faster than average US conditions. In that context, the choice of heat exchanger material matters significantly over a 20-year ownership horizon.
Noritz’s EZ series uses a stainless steel primary heat exchanger with a manufacturer warranty of up to 25 years — the longest heat exchanger warranty in the residential tankless category. For a homeowner in North Tustin, Lemon Heights, or Villa Park who’s installing for the long term and doesn’t want to think about heat exchanger replacement in year 12, Noritz is the unit we recommend.
| Noritz Model | GPM | HX Material | HX Warranty | Best For |
|---|---|---|---|---|
| EZTR75 | 7.5 | Stainless | 25 years | 2–3 bath homes, Old Town Tustin, Columbus Square |
| EZTR85 | 8.5 | Stainless | 25 years | 3-bath Tustin Ranch. Good hard water longevity at moderate GPM. |
| NRC1111-DV | 11.1 | Stainless | 15 years | Large 4-bath homes. North Tustin estate properties. High simultaneous demand. |
Noritz FAQs — Tustin CA
Is Noritz better than Rinnai for hard water in Tustin?
Noritz’s stainless steel heat exchanger with its 25-year warranty gives it a meaningful advantage over Rinnai’s copper exchanger in OC’s 15 GPG water. Noritz is ideal for long-term ownership in North Tustin and Villa Park, while Rinnai excels on service network breadth.
Does Noritz’s 25-year warranty cover hard water damage?
It covers manufacturing defects, not damage caused by lack of maintenance. Annual professional descaling is required to maintain the warranty in Tustin’s hard water.
Noritz Installation — Tustin CA · Best Hard Water Warranty
Stainless exchanger. 25-year warranty. Annual descaling reminder. Written quote before work starts.
📞 +1 (855) 534-0035