Noritz
Noritz is a Japan-based manufacturer of gas tankless water heaters sold in the U.S. through wholesale plumbing supply to licensed contractors. Noritz's residential lineup covers both condensing and non-condensing tankless models, giving it a published non-condensing option in a category where most competitors now focus primarily on condensing units.
Parent company Noritz Corporation · Mid positioning · Updated August 2026
Product lines
Condensing tankless models covering common residential capacities with published UEF ratings.
Higher-output condensing tankless models for larger residential demand.
Standard efficiency tankless models, a published option where condensing venting is impractical.
Warranty summary
| Coverage | Published term |
|---|---|
| Heat exchanger | 12 years published on most residential condensing models |
| Parts | 5 years published on most residential models |
| Labor | 1 to 2 years published depending on the model |
| Registration | Online registration recommended to activate the full published term on some models |
Condensing and non-condensing models can publish different terms. Confirm the exact heat exchanger, parts, and labor terms for the specific model quoted.
Price positioning
Priced in the mid band relative to other tankless specialists, with the non-condensing line generally priced below the condensing EZ and NRC series. Noritz does not publish installed pricing.
Distribution and service network
Sold through wholesale plumbing supply to licensed contractors experienced with tankless installation, gas line sizing, and venting requirements.
Maintenance considerations
- Periodic descaling is required in hard water areas per the installation and care manual.
- Annual professional inspection of venting and combustion components is recommended for gas-fired tankless units.
- Non-condensing models have different venting material requirements than condensing models; installation should follow the specific model's manual.
- Register the unit where registration affects the published warranty term.
Noritz comparisons
Other water heaters brands
Related calculators
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Financing options
How homeowners pay for this work, with the tradeoffs of each route.
Warranty resources
What manufacturer coverage does and does not include, and where a service contract fits.
Frequently asked questions
Does Noritz make non-condensing tankless water heaters?
Yes, Noritz publishes a non-condensing tankless line alongside its condensing EZ and NRC series, which is an option in situations where condensing venting is impractical.
How long is the Noritz warranty?
Noritz publishes up to 12 years on the heat exchanger for most residential condensing models, 5 years on parts, and 1 to 2 years on labor depending on the model. Confirm all three for the model quoted.
Is a non-condensing tankless water heater less efficient than a condensing one?
Condensing models generally publish higher UEF ratings than non-condensing models because they recover additional heat from exhaust gases, but the right choice also depends on venting constraints at the installation site.
Do Noritz tankless units need regular maintenance?
Yes, periodic descaling is specified in the installation and care manual, particularly in hard water areas.
Can I buy a Noritz water heater at retail?
Noritz is distributed through wholesale plumbing supply to licensed contractors rather than at retail counters.
Are Noritz tankless models ENERGY STAR certified?
Select Noritz condensing tankless models qualify for ENERGY STAR based on published UEF ratings. Check the specific model against the current ENERGY STAR qualified product list.
Verify these details yourself
- Installed price, which depends on venting type and gas line work required at your home.
- Comparative reliability against other tankless brands. No independent public dataset was found.
- Local contractor availability for non-condensing versus condensing installation.
Sources
- Noritz limited warranty documentation · Official manufacturer, checked 2026-08-03, confidence: high
- Noritz tankless water heater product specifications · Official manufacturer, checked 2026-08-03, confidence: medium
- ENERGY STAR water heater product criteria · Government, checked 2026-08-03, confidence: high. Used for UEF framing and incentive eligibility only, not for a reliability claim.
- U.S. Department of Energy water heater guidance · Government, checked 2026-08-03, confidence: high. Used for UEF and system-type framing, not brand-specific claims.
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