Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The AGBWF215A96AV is the largest natural draft model in the line and the only one that widens the cabinet: 23.6 in against 19.7 in, with shipping weight rising to 468 lb. It adds 42,000 BTU/hr of input and 35,000 BTU/hr of heat capacity over the AGBWF173A95AV at a 0.1 point lower printed AFUE (83.3% against 83.4%).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | American Standard AGBWF173A95AV (natural draft gas boiler) | American Standard AGBWF215A96AV (natural draft gas boiler) |
|---|---|---|
| Vent style (as printed) | Natural draft | Natural draft |
| Input (as printed) | 173,000 BTU/hr | 215,000 BTU/hr |
| Heat capacity (as printed) | 145,000 BTU/hr | 180,000 BTU/hr |
| AFUE (as printed) | 83.4 % | 83.3 % |
| Height (as printed) | 33.5 in | 33.5 in |
| Width (as printed) | 19.7 in | 23.6 in |
| Depth (as printed) | 24.2 in | 24.2 in |
| Shipping weight (as printed) | 406 lb | 468 lb |
Both models sit at the top of the four-model natural draft family documented on the archived official gas page. The AGBWF173A95AV prints 83.4% AFUE, 173,000 BTU/hr input and 145,000 BTU/hr heat capacity; the AGBWF215A96AV prints 83.3%, 215,000 BTU/hr and 180,000 BTU/hr.
The 215 is the first natural draft size to leave the 19.7 in cabinet width - it measures 23.6 in wide while keeping the same 33.5 in height and 24.2 in depth - and it ships at 468 lb against 406 lb. That extra width matters in replacement work where the old boiler sat in a narrow alcove.
Both carry the same construction and controls, including the cast iron heat exchanger, stainless steel tubular burner, electronic ignition and electric vent damper. With only a 0.1 point AFUE difference, the choice is capacity: the 215 covers the largest loads in the line at 180,000 BTU/hr of heat capacity, while the 173 remains the better match when the design load fits inside 145,000 BTU/hr.
American Standard
The American Standard AGBWF173A95AV is a natural draft gas-fired cast iron water boiler rated 83.4% AFUE, 173,000 BTU/hr input and 145,000 BTU/hr heat capacity, documented from the archived official 2008 rating table.
American Standard
The American Standard AGBWF215A96AV is a natural draft gas-fired cast iron water boiler rated 83.3% AFUE, 215,000 BTU/hr input and 180,000 BTU/hr heat capacity, documented from the archived official 2008 rating table.
The AGBWF215A96AV, at 215,000 BTU/hr input and 180,000 BTU/hr heat capacity; it is also the only natural draft size with a 23.6 in wide cabinet.
The AGBWF173A95AV prints 83.4% AFUE and the AGBWF215A96AV 83.3%, a 0.1 point spread on the archived official table.
Both are natural draft models vented through a chimney; the direct vent AGRWF130A94A0 is the only model in the line that does not use the natural draft arrangement.
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.