Noritz CB Combi
Model Number: CB
Entry-level Japanese combi boiler for smaller homes.
Technical Specifications
Prices depend on sizing, venting and piping in your home, so we quote every installation.
Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.
Home-Specific Operating Cost Review
No guaranteed annual savings or payback period
Historical Use
Fuel consumption and weather
Current Rates
Utility and delivered-fuel prices
System Design
Load, piping, controls, and temperatures
Full Specifications
- Model Number
- CB
- Efficiency (AFUE)
- 95%
- Boiler Type
- Combi Boiler
- BTU Input Range
- 60k - 120k BTU
- In Production
- Yes
- Parts Warranty
- 5 years
- Heat Exchanger Warranty
- 12 years
Specification source not yet linked — figures are being verified against manufacturer data.
Ideal For
Smaller Cape Cods with single bathroom
Expert Review: Noritz CB Combi
The Noritz CB Combi brings Japanese precision to combined heating and hot water. At 95% AFUE, this wall-mounted unit provides both space heating and endless domestic hot water. Perfect for space-conscious Nassau County homes where eliminating a separate water heater makes sense.
Japanese manufacturing quality translates to reliable performance. The stainless steel heat exchanger handles Long Island's hard water effectively.
Annual descaling is essential for Long Island water conditions.
Our recommendation: The CB Combi is ideal for homes under 2,500 square feet with 1-2 bathrooms wanting Japanese quality.
Key Features & Technology
Compact combi design
95% AFUE efficiency
Wall-mount installation
Japanese quality
Budget-friendly
Advantages
- Lower entry point
- Good for smallest homes
- Japanese engineering
- PSEG rebate eligible
Considerations
- Smaller capacity
- Less features
- Annual maintenance required
Sizing & Installation Notes
Combi boilers like the CB Combi are sized on two loads at once: the home's heat loss and the peak domestic hot water demand. In most Long Island homes the hot-water load is the larger one, so we size to your household's simultaneous shower and tap use.
Every Noritz installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, gas or oil supply sizing, and permit requirements for your town. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.
Warranty & Protection
Parts Warranty
5 years
Heat Exchanger
12 years
Our Guarantee
100% Satisfaction
All Noritz boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.
Compare the Noritz Lineup
| Model | Efficiency | BTU Range | Fuel | Heat Exchanger Warranty |
|---|---|---|---|---|
| CB Combi (this model) | 95% AFUE | 60k - 120k BTU | — | 12 years |
| NRCB Combi | 96% AFUE | 60k - 150k BTU | — | 12 years |
| NCB-H | 95% AFUE | 60k - 199k BTU | — | 12 years |
See the full Noritz brand page for lineup context, or browse the Best Combi Boilers 2027 guide to compare across brands.
Frequently Asked Questions
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