Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Fulton ENDURA EDR-750 and Fulton ENDURA EDR-1500 are two condensing boilers from the Fulton ENDURA line. Published ratings: Fulton ENDURA EDR-750 at 90,000–750,000 BTU/h input, 728,250 BTU/h output and 97.1% thermal efficiency; Fulton ENDURA EDR-1500 at 133,000–1,500,000 BTU/h input, 1,402,500 BTU/h output and 93.5% thermal efficiency. Fulton ENDURA EDR-1500 lists 750,000 BTU/h more input than Fulton ENDURA EDR-750 (1,500,000 BTU/h against 750,000 BTU/h). Fulton ENDURA EDR-750 lists 3.6 percentage points more thermal efficiency than Fulton ENDURA EDR-1500 (97.1% against 93.5%). Fulton ENDURA EDR-1500 lists 830 lb more shipping weight than Fulton ENDURA EDR-750 (2,260 lb against 1,430 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Fulton ENDURA EDR-750 | Fulton ENDURA EDR-1500 |
|---|---|---|
| Minimum input | 90,000 BTU/h | 133,000 BTU/h |
| Rated input | 750,000 BTU/h | 1,500,000 BTU/h |
| Rated output | 728,250 BTU/h | 1,402,500 BTU/h |
| AHRI thermal efficiency | 97.1 % | 93.5 % |
| Turndown | 8:1 | 11:1 |
| Water volume | 50 gal | 104 gal |
| Dry weight | 1,430 lb | 2,260 lb |
| Water connections | 2" NPT | 4" ANSI 150# FLG |
| Gas connection | 1" NPT | 1-1/2" NPT |
| Fuel | Natural gas or propane | Natural gas or propane |
| Boiler horsepower (BTS-2000) | 21.8 | 41.9 |
| Combustion air intake | 6 in | 8 in |
| Flue gas exhaust | 6 in | 6 in |
Published ratings: the Fulton ENDURA EDR-750 is rated 90,000–750,000 BTU/h input, 728,250 BTU/h output and 97.1% thermal efficiency; the Fulton ENDURA EDR-1500 is rated 133,000–1,500,000 BTU/h input, 1,402,500 BTU/h output and 93.5% thermal efficiency. Fulton ENDURA EDR-1500 lists 750,000 BTU/h more input than Fulton ENDURA EDR-750 (1,500,000 BTU/h against 750,000 BTU/h). Fulton ENDURA EDR-750 lists 3.6 percentage points more thermal efficiency than Fulton ENDURA EDR-1500 (97.1% against 93.5%).
Fulton ENDURA EDR-1500 lists 830 lb more shipping weight than Fulton ENDURA EDR-750 (2,260 lb against 1,430 lb). The turndown differs: the Fulton ENDURA EDR-750 lists 8:1, while the Fulton ENDURA EDR-1500 lists 11:1. The boiler water content differs: the Fulton ENDURA EDR-750 lists 50 gal, while the Fulton ENDURA EDR-1500 lists 104 gal. The water connections differs: the Fulton ENDURA EDR-750 lists 2" NPT, while the Fulton ENDURA EDR-1500 lists 4" ANSI 150# FLG.
Both records print the same fuel (Natural gas or propane) and flue gas exhaust (6 in), per the cited sources.
Fulton
The Fulton ENDURA EDR-750 is a condensing duplex-stainless firetube commercial hydronic boiler rated 750,000 BTU/hr input and 728,250 BTU/hr output at 97.1% thermal efficiency, with 8:1 turndown per the official Endura TDS.
Fulton
The Fulton ENDURA EDR-1500 is a condensing duplex-stainless firetube commercial hydronic boiler rated 1,500,000 BTU/hr input and 1,402,500 BTU/hr output at 93.5% thermal efficiency, with 11:1 turndown per the official Endura TDS.
The Fulton ENDURA EDR-1500 lists 1,500,000 BTU/h, against 750,000 BTU/h on the Fulton ENDURA EDR-750, per the cited documentation.
The Fulton ENDURA EDR-750 carries the higher published thermal efficiency at 97.1%, against 93.5%.
It ships at 2,260 lb against 1,430 lb for the Fulton ENDURA EDR-750, per the cited sources.
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.