Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The VANTAGE VTG-3000 adds 1,000,000 BTU/hr of input and 971,000 BTU/hr of output over the VANTAGE VTG-2000 on the same VANTAGE platform. The VTG-3000 adds 1,000,000 BTU/hr of input, steps the gas connection from 1-1/2 in to 2 in and the flue from 10 in to 12 in, and nearly doubles the water volume to 215 gal.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Fulton VANTAGE VTG-2000 | Fulton VANTAGE VTG-3000 |
|---|---|---|
| Rated input | 2,000,000 BTU/h | 3,000,000 BTU/h |
| Rated output | 1,918,000 BTU/h | 2,889,000 BTU/h |
| AHRI thermal efficiency | 95.7 % | 96.3 % |
| Boiler horsepower (BTS-2000) | 57 | 86 |
| Water connections | 4" ANSI 150# FLG | 4" ANSI 150# FLG |
| Dry weight | 3,800 lb | 5,300 lb |
| Water volume | 147 gal | 215 gal |
| Typical flow at rated output, 20°F ΔT | 192 GPM | 289 GPM |
The VTG-2000 is rated 2,000,000 BTU/hr input and 1,918,000 BTU/hr output with Up to 5:1 (natural gas) turndown; the VTG-3000 is rated 3,000,000 BTU/hr input and 2,889,000 BTU/hr output with Up to 5:1 (natural gas) turndown. Rated efficiency moves from 95.7% on the VTG-2000 to 96.3% on the VTG-3000 in the official thermal-efficiency column.
The VTG-3000 adds 1,000,000 BTU/hr of input, steps the gas connection from 1-1/2 in to 2 in and the flue from 10 in to 12 in, and nearly doubles the water volume to 215 gal. Typical flow at a 20°F rise rises from 192 gpm to 289 gpm, which sizes the primary loop. Dry weight steps from 3,800 lb to 5,300 lb, so rigging and floor loading should be checked against the larger unit.
Both sizes are documented in the same official Fulton data sheet, so the choice is a heat-loss and plant-layout decision: size to the design-day load, then verify connection sizes, venting and weight against the sheet for the exact model.
Fulton
The Fulton VANTAGE VTG-2000 is a condensing firetube commercial hydronic boiler rated 2,000,000 BTU/hr input and 1,918,000 BTU/hr output at 95.7% thermal efficiency, with up to 5:1 natural-gas turndown per the official Vantage TDS.
Fulton
The Fulton VANTAGE VTG-3000 is a condensing firetube commercial hydronic boiler rated 3,000,000 BTU/hr input and 2,889,000 BTU/hr output at 96.3% thermal efficiency, with up to 5:1 natural-gas turndown per the official Vantage TDS.
Yes — both use 4 in ANSI 150# flanged supply and return connections per the Vantage Standard TDS.
The VTG-3000 is rated 96.3% against the VTG-2000's 95.7% thermal efficiency in the official TDS.
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.