Carrier · Series
Carrier Carrier BWB (Comfort 84 gas boiler)
The Carrier BWB (Comfort 84) is a current US non-condensing gas boiler with a cast iron heat exchanger, single-stage gas valve and electronic ignition, rated up to 84% AFUE. It is one of three gas boilers on Carrier's current US boilers page; carrier.ca lists no boilers for Canada.
Series facts
- Type
- non-condensing
- Efficiency
- 84% AFUE
- Fuel
- Natural gas
- Venting
- Unknown
- Models documented
- 0
- Warranty
- Published terms
Up to 84% AFUE as printed on Carrier's official BWB page and consumer brochure.
About the Carrier BWB (Comfort 84 gas boiler)
The BWB is the Comfort 84 gas boiler on Carrier's current US boilers page, described as a gas-fired water-output boiler with a cast iron heat exchanger, single-stage gas valve and electronic ignition, rated up to 84% AFUE. Carrier's consumer brochure prints the same figure, lists the BWB as a water boiler, and covers it with the same 10-year parts and 20-year heat exchanger limited warranty upon timely registration that applies to the Performance 84 BW3.
The official page says the model is available in various sizes but does not print per-model rating rows, and no BWB-specific owner's guide was located in Carrier's document library during this check - so Boilers.ca publishes the series without model-level records or manual links. Owners of an installed BWB should work from the documentation that came with the unit.
The BWB is a US catalogue product: Carrier Canada's residential site lists no boilers, so the series is recorded canadianStatus 'unknown'. Any installation, gas, combustion or venting work belongs with a licensed contractor.
Highlights
- Current US gas boiler on Carrier's residential boilers page (Comfort 84 line)
- Up to 84% AFUE with cast iron heat exchanger and electronic ignition
- 10-year parts and 20-year heat exchanger limited warranty upon timely registration
- Printed as a water boiler in Carrier's consumer brochure
- No per-model rating rows and no BWB-specific manual located in the official library
- Not listed on carrier.ca; canadianStatus unknown
10-year parts and 20-year heat exchanger limited warranty upon timely registration (5-year parts if not registered within 90 days, except where registration conditions are prohibited).
Models
Carrier BWB (Comfort 84 gas boiler) models
One canonical page per model with input, output and efficiency kept separate.
Error codes and alerts
Carrier BWB (Comfort 84 gas 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.
Services for Carrier boilers
Frequently asked questions
What is the Carrier BWB?
The BWB is the Comfort 84 gas boiler in Carrier's current US line: a non-condensing, cast iron, water-output boiler rated up to 84% AFUE with a single-stage gas valve and electronic ignition.
Is there a BWB owner's manual?
No BWB-specific owner's guide was located in Carrier's document library during this check; the official page and consumer brochure are the sources listed here. Owners should keep the documentation supplied with their unit.
Is the Carrier BWB sold in Canada?
Carrier's Canadian residential site lists no boilers, so no Canadian sales statement exists. Boilers.ca records canadianStatus 'unknown'.
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
- Carrier — Comfort 84 Gas Boiler BWB (up to 84% AFUE) · accessed September 9, 2026
- Carrier Boiler Consumer Brochure (01-858-686-01, 06/2026) — BWB ratings and warranty summary · accessed September 9, 2026
- Carrier — Boiler Limited Warranty (39004DP565, April 2020) — BWB coverage chart · accessed September 9, 2026
- Carrier Canada — Canadian residential HVAC products (no boilers in the current line-up) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.