Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The CB1250F and CB2000F share the Commodore Floor connection scheme — 2-1/2-inch Victaulic water, 2-inch gas, 8-inch/8-inch venting and 150-foot vent runs — but the CB2000F adds 800 MBH of input ceiling, widens turndown to 8.5:1 and prints 98.0% thermal efficiency against the CB1250F's 97.0%, in a larger 1,213 lb chassis.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Ideal Commodore Floor CB1250F | Ideal Commodore Floor CB2000F |
|---|---|---|
| Input, minimum | 156 MBH | 236 MBH |
| Input, maximum | 1,200 MBH | 2,000 MBH |
| Output | 1,200 MBH | 1,945 MBH |
| Net AHRI rating | 1,043 MBH | 1,691 MBH |
| Thermal efficiency | 97 % | 98 % |
| Combustion efficiency | 96.6 % | 97 % |
| Turndown ratio | 8:1 | 8.5:1 |
| Rated volume | 11 gal | 16.2 gal |
| Weight | 992 lb | 1,213 lb |
Both models are floor-standing commercial condensing boilers with 2-1/2-inch Victaulic supply/return connections, 2-inch NPT gas, 8-inch/8-inch vent/air and a 150-foot published vent length. The CB1250F fires 156 to 1,200 MBH with an 8:1 turndown, 1,200 MBH output and a 1,043 MBH net AHRI rating; the CB2000F fires 236 to 2,000 MBH with an 8.5:1 turndown, 1,945 MBH output and a 1,691 MBH net AHRI rating.
Efficiency and size step up together: the CB1250F prints 97.0% thermal and 96.6% combustion efficiency in a 55 x 47 x 34 inch, 992 lb chassis with 11.0 gallons rated volume; the CB2000F prints 98.0% thermal and 97.0% combustion in a 68 x 47 x 34 inch, 1,213 lb chassis with 16.2 gallons.
Both are field-convertible between natural gas and propane with Modbus standard and BACnet optional, and both cascade up to 16 boilers. The choice is the design load: a plant that fits the CB1250F keeps the smaller footprint, while a load approaching 2,000 MBH per boiler needs the CB2000F's ceiling and benefits from its wider turndown.
Ideal Heating
The Ideal Commodore Floor CB1250F is the smallest Commodore Floor model: 156 to 1,200 MBH input, 97.0% printed thermal efficiency, 8:1 turndown and a 992 lb floor-standing commercial chassis.
Ideal Heating
The Ideal Commodore Floor CB2000F is a commercial floor-standing condensing boiler: 236 to 2,000 MBH input with the line's widest turndown at 8.5:1, 98.0% printed thermal efficiency and a 1,691 MBH net AHRI rating.
2-1/2-inch Victaulic supply/return, 2-inch NPT gas, 8-inch/8-inch vent/air and a 150-foot published vent length, per the official model table.
The CB2000F at 8.5:1 — the widest in the Commodore Floor line — against the CB1250F's 8:1.
68 x 47 x 34 inches and 1,213 lb with 16.2 gallons rated volume, against 55 x 47 x 34 inches, 992 lb and 11.0 gallons for the CB1250F.
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.