Skip to content
Boilers.caby ROMA Heating & Cooling

Cleaver-Brooks · ClearFire-C

Cleaver-Brooks ClearFire-C 2500

The Cleaver-Brooks ClearFire-C 2500 (Model CFC 2500) is a fully condensing hydronic boiler rated 2,500,000 BTU/hr input and 2,400,000 BTU/hr output at 104/86°F, with 71.7 BHP and 126 gal water content per the official CB-8278 Dimensions and Ratings.

Status unknownCanadian status unknown
Service this modelEstimate a replacement

Key figures

Max input
2,500,000 BTU/hr
Max CSA output
2,400,000 BTU/hr
AFUE
—
Min input
—
Natural gasPropaneHeating-onlycommercial

Input is gas energy consumed; output is heat delivered. Never size from input alone.

Cleaver-Brooks ClearFire-C 2500 in practice

The CFC 2500 is the 2,500 MBTU size of the Model CFC ClearFire-C line, the vertical down-fired fully condensing hydronic boiler documented by Cleaver-Brooks drawing CB-8278. The official Dimensions and Ratings print 2,500,000 BTU/hr input, 2,400,000 BTU/hr output at 104/86°F and 2,175,000 BTU/hr at 176/140°F, 71.7 boiler horsepower, a 125 psi MAWP, 126 gal water content, 3,640 lb shipping weight and 4,685 lb operating weight.

Connections on this size are a 5" 150# RF flanged water supply/return, a 1-1/2" NPT gas connection, a 12 in flue gas outlet and 8 in combustion air, with a 115/1/60 fan drawing 12 A. The archived official product page describes the ClearFire-C as a vertical down-fired stainless steel fully condensing boiler with AluFer tubes, dual temperature return, a Falcon touch-screen control with lead-lag up to eight boilers, and up to 99% efficiency at low fire / 97% at high fire with 80°F return water.

Best suited to

  • Commercial hydronic loads near 2,500,000 BTU/hr input
  • Plants wanting a fully condensing vertical firetube with dual-temperature return
  • Retrofit buildings served by an existing ClearFire-C or similar condensing boiler

Applicability and support

Model number
CFC 2500
Canadian availability
unknown
Production status
unknown
ROMA supplies
Confirmed at consultation
ROMA services
Confirmed at consultation
Warranty
Not verified

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

Specifications

Published specifications

Values as published by Cleaver-Brooks. Units are shown with every value; notes flag conflicting sources or missing figures.

Cleaver-Brooks ClearFire-C 2500 specifications
SpecificationValueNote
Input
Input (max)2,500,000 BTU/hrInput max 2,500,000 BTU/hr printed in the Model CFC Dimensions and Ratings (CB-8278).
Output
Output at 104/86°F, 100% firing2,400,000 BTU/hrOutput 2,400,000 BTU/hr at 104/86°F printed in CB-8278; the same table prints 2,175,000 BTU/hr at 176/140°F.
Boiler horsepower71.7Boiler horsepower 71.7 at 104/86°F printed in CB-8278.
Efficiency
Efficiency (page)99 %The archived official ClearFire-C product page states up to 99% efficiency at low fire and 97% at high fire with 80°F return water temperature; CB-8278 does not print a single rated efficiency.
Venting and air
Flue gas connection12 inFlue gas nominal OD (left or right option) printed in CB-8278.
Combustion air option8 inCombustion air option printed in CB-8278.
Physical and connections
MAWP125 psiMaximum allowable working pressure printed in CB-8278; maximum operating temperature 194°F.
Water content126 galWater content 126 gal printed in CB-8278.
Shipping weight3,640 lbShipping weight 3,640 lb and operating weight 4,685 lb printed in CB-8278.
Water supply / return5" 150# RF flangedWater supply and return connection (150# raised-face flanged) printed in CB-8278.
Gas connection1-1/2" NPTGas connection printed in CB-8278.
Electrical
Electrical115/1/60, fan 1200 W at 12 A; control circuit 2 AFan motor and control-circuit data printed in CB-8278.
Operating limits and other
Condensate quantity16.5 gal/hrCondensate quantity firing natural gas at 104/86°F printed in CB-8278.
FuelNatural gas or propaneCB-8278 prints natural-gas and propane consumption rates for the Model CFC sizes.

Manuals

Alerts documented for this model

None documented yet.

Services

Related parts & service

Frequently asked questions

What are the ClearFire-C 2500 ratings?

Official drawing CB-8278 prints 2,500,000 BTU/hr input, 2,400,000 BTU/hr output at 104/86°F (2,175,000 BTU/hr at 176/140°F) and 71.7 BHP.

What connections does the CFC 2500 use?

A 5" 150# RF flanged water supply/return, 1-1/2" NPT gas, 12 in flue and 8 in combustion air per CB-8278.

Is the ClearFire-C still catalogued?

Cleaver-Brooks' current condensing-hydronic catalogue lists the ClearFire-CE (CFC-E) and SwitchFire; the ClearFire-C page is archived and the line is documented here from the official archived CB-8278 ratings, so productStatus is recorded as unknown.

Questions about the Cleaver-Brooks ClearFire-C 2500?

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.

Call 778-909-5731Request service

Compare and explore

Sources and verification

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

CallEmailEstimate