Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
Comparison
Verdict in brief
Both sizes sit on the same ClearFire-W platform. The CFW 2000 adds 35 gal of water capacity over the 1500 at the same 10 in w.c. minimum gas pressure and the same 88%-nominal efficiency wording.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Cleaver-Brooks ClearFire-W CFW 1500 | Cleaver-Brooks ClearFire-W CFW 2000 |
|---|---|---|
| Efficiency (manual) | 88 % | 88 % |
| Water content | 176 gal | 211 gal |
| Minimum gas pressure at gas train connection | 10 in w.c. | 10 in w.c. |
| MAWP | 125 psig | 125 psig |
The CFW 1500 carries 88% efficiency and the CFW 2000 88%. Both sizes sit on the same ClearFire-W platform. The CFW 2000 adds 35 gal of water capacity over the 1500 at the same 10 in w.c. minimum gas pressure and the same 88%-nominal efficiency wording.
Water content moves from 176 gal to 211 gal, which changes the system volume and buffer behaviour. Pressure rating: 125 on the smaller unit against 125 on the larger.
Both models are documented in the same official Cleaver-Brooks material, so the choice is a load and plant-layout decision: size to the calculated demand, then verify connections, venting and weight in the family document for the exact model.
Cleaver-Brooks
The Cleaver-Brooks ClearFire-W CFW 1500 is a compact vertically fired firetube hydronic boiler documented by the official Model CFW O&M manual (750-296), with 176 gal water capacity and a 10 in w.c. minimum gas pressure.
Cleaver-Brooks
The Cleaver-Brooks ClearFire-W CFW 2000 is a compact vertically fired firetube hydronic boiler documented by the official Model CFW O&M manual (750-296), with 211 gal water capacity and a 10 in w.c. minimum gas pressure.
211 gal, per Table 4-1 of the official Model CFW O&M manual, against 176 gal for the CFW 1500.
No — the captured official O&M manual prints water capacity and gas pressure tables only, so Boilers.ca does not publish unverified input/output figures.
A consultation includes a heat-loss review so the size is right the first time.
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.