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Noritz · Series

Noritz NRCB Combi Boiler

The NRCB is Noritz's wall-hung condensing combi series: the NRCB180DV (GHQ-C2801WX-FF US) and NRCB199DV (GHQ-C3201WX-FF US), both rated 95.0% AFUE with 316L stainless steel heat exchangers and 18,000 BTU/h minimum fires, marketed by Noritz as able to run domestic hot water and space heating simultaneously.

Current seriesSold in CanadaNatural gasPropaneresidential

Series facts

Type
combi
Efficiency
95% AFUE
Fuel
Natural gas and propane variants exist; official product identities are the "US NG" and "US LP" versions (GHQ-C2801WX-FF US / GHQ-C3201WX-FF US).
Venting
Indoor sealed combustion direct vent with 2" or 3" PVC, CPVC, polypropylene or stainless steel pipe per the installation manual venting section; in Canada, plastic vent systems must be certified to ULC S636. Convertible to single vent (SV) with conversion kit #SV-CK-2, with 2" and 3" terminations available.
Models documented
2
Warranty
Not verified

95.0% AFUE as printed on the official product pages, NRCB hub page and spec sheet (SBB80U9-5).

About the NRCB Combi Boiler

The NRCB is a residential condensing combination boiler that combines domestic hot water and space heating in one wall-hung unit: Noritz's official NRCB hub page calls it "the first combination boiler on the market that can simultaneously provide domestic and space heating," so a shower does not pull heat from the rooms. The series has two models — the NRCB180DV (GHQ-C2801WX-FF US) and the NRCB199DV (GHQ-C3201WX-FF US) — both rated 95.0% AFUE, both firing from an 18,000 BTU/h minimum, with DHW input to 180,000 or 199,900 BTU/h and space-heating input to 100,000 or 120,000 BTU/h.

Noritz builds the NRCB around 316L stainless steel primary and secondary heat exchangers and a fully modulating premix burner that the product pages state emits about 14 ppm of nitrogen oxides, below the South Coast Air Quality Management District's 20 ppm limit. Both models share the same cabinet at 27" high by 18.5" wide by 12.8" deep and weigh 95 lb, with built-in outdoor reset control and outdoor temperature sensor included, an internal pump and a remote thermostat.

The NRCB is the combi Noritz named when it opened its Vancouver, BC warehouse for Canadian wholesaler orders effective August 1, 2025, and the official installation manual (SBB80UB-5, Rev. 04/21) covers the United States and Canada together — CSA B149.1 installation and ULC S636-certified plastic venting in Canada — with the spec sheet citing an ANSI Z21.13/CSA 4.9 certified design. Purchases run through wholesaler-distributors; Boilers.ca found no Canadian CRN registration numbers or Canadian warranty terms on noritz.com.

Highlights

  • Condensing combi: DHW and space heating, marketed as simultaneous-capable
  • Two models: NRCB180DV (GHQ-C2801WX-FF US) and NRCB199DV (GHQ-C3201WX-FF US)
  • 95.0% AFUE on both models, firing from an 18,000 BTU/h minimum
  • 316L stainless steel primary and secondary heat exchangers
  • Premix burner at about 14 ppm NOx per the official product pages
  • US+Canada installation manual: CSA B149.1 with ULC S636-certified plastic venting in Canada

Models

NRCB Combi Boiler models

One canonical page per model with input, output and efficiency kept separate.

CurrentSold in Canada
Input
18–100 MBH
Output (max)
AFUE
95 %

The Noritz NRCB180DV (GHQ-C2801WX-FF US) is a wall-hung condensing combi boiler rated 95.0% AFUE: it fires 18,000 to 100,000 BTU/h for space heating and up to 180,000 BTU/h for domestic hot water, in a 95 lb, 27-inch-tall cabinet Noritz markets for simultaneous DHW and heating.

Natural gasPropaneCombi
CurrentSold in Canada
Input
18–120 MBH
Output (max)
AFUE
95 %

The Noritz NRCB199DV (GHQ-C3201WX-FF US) is the larger NRCB condensing combi: 18,000 to 120,000 BTU/h of heating input with DHW input to 199,900 BTU/h and flow to 11.1 GPM, rated 95.0% AFUE in the same 95 lb cabinet as the NRCB180DV.

Natural gasPropaneCombi

Compare models in this series

Comparison of Noritz NRCB180DV and Noritz NRCB199DV
SpecificationNoritz NRCB180DVNoritz NRCB199DV
Heating input, minimum18 MBH18 MBH
Heating input, maximum100 MBH120 MBH
output-max
Efficiency (AFUE)95 %95 %
turndown
vent-max-3
vent-max-2
Weight95 lb95 lb

Read the full comparison: Noritz NRCB180DV vs NRCB199DV

Error codes and alerts

NRCB Combi Boiler alerts

No alerts documented for this series yet.

Manuals

Official documents

Where ROMA provides on-site service

On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.

See all service areas

Frequently asked questions

What do the NRCB180DV and NRCB199DV model numbers mean?

The numbers track the standard (DHW) input ceiling: the NRCB180DV draws 18,000 to 180,000 BTU/h and the NRCB199DV 18,000 to 199,900 BTU/h for domestic hot water, while space-heating input tops out at 100,000 and 120,000 BTU/h respectively. Both are the same 95 lb wall-hung cabinet.

Is the Noritz NRCB available in Canada?

Noritz's official blog (July 31, 2025) states the NRCB is among the products stocked at its Vancouver, BC warehouse for Canadian wholesaler orders effective August 1, 2025, and the installation manual is a US+Canada document (CSA B149.1, ULC S636 venting in Canada). Purchases run through wholesaler-distributors; Boilers.ca found no CRN registration numbers or Canadian warranty terms on noritz.com.

What warranty does Noritz publish for the NRCB?

The official US spec sheet prints a 10-year limited heat exchanger warranty for residential use and a 5-year limited parts warranty. Noritz does not state Canadian warranty terms on noritz.com, so Boilers.ca lists no warranty claim for Canada — confirm terms with the distributor or manufacturer's representative before purchase.

Talk to a boiler technician

Describe what the boiler is doing and get a straight answer about the next step.

On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.

Sources and verification

Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.

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