Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The EP-299 and EP-301 are near-identical twins in LP-550 Table 4 — both 30,000 BTU/hr minimum, 211 lb, 3.1 gal, 14.5 x 36.5 x 24.75 in, 1-1/4" NPTF CH — with the EP-301 adding just 2 MBH of input ceiling (301,000 vs 299,000; 289 vs 277 MBH capacity) and a higher printed 96.1* efficiency figure.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | HTP EP-299 | HTP EP-301 |
|---|---|---|
| Input rate, minimum | 30 MBH | 30 MBH |
| Input rate, maximum | 299 MBH | 301 MBH |
| AFUE (as printed) | 95 % | 96.1 % |
| Heating capacity | 277 MBH | 289 MBH |
| Shipping weight | 211 lb | 211 lb |
| Boiler water content | 3.1 gal | 3.1 gal |
| Dimensions (W x H x D) | 14.5" x 36.5" x 24.75" | 14.5" x 36.5" x 24.75" |
| CH supply/return connection | 1-1/4" NPTF | 1-1/4" NPTF |
| Gas supply connection | 1" NPTF | 1" NPTF |
| Venting | 4" (200 ft) or 6" (275 ft), combined equivalent feet | 4" (200 ft) or 6" (275 ft), combined equivalent feet |
LP-550 Table 4 prints the same minimum input (30,000 BTU/hr), shipping weight (211 lb), water content (3.1 gal) and dimensions for both; the EP-301's maximum input is 301,000 against 299,000 BTU/hr.
The retired page table prints 95% for the EP-299 and 96.1* for the EP-301 (asterisk and N/A energy guide as printed), while heating capacity rises from 277 to 289 MBH.
Connection sizes are identical (1-1/4" NPTF CH, 1" NPTF gas) and both use 4"/6" venting, so the two are effectively the same install with a 2 MBH ceiling difference.
HTP
The HTP EP-299 is the 299 MBH class model of the retired Elite Premier low-mass condensing boiler line: 30,000 to 299,000 BTU/hr input, 95% printed AFUE, 277 MBH heating capacity and a 211 lb shipping weight, recorded from the official retired Elite Premier table.
HTP
The HTP EP-301 is the 301 MBH class model of the retired Elite Premier low-mass condensing boiler line: 30,000 to 301,000 BTU/hr input, 96.1% printed AFUE, 289 MBH heating capacity and a 211 lb shipping weight, recorded from the official retired Elite Premier table.
2 MBH of maximum input (299,000 vs 301,000 BTU/hr) and a printed efficiency step from 95% to 96.1*; the physical package is identical in LP-550 Table 4.
The retired page prints 96.1* with an asterisk and N/A in the Energy Guides column; LP-549 prints line figures of up to 96.4% AFUE / 96.5 thermal efficiency.
Either fits the same piping and vent route; the choice is the printed efficiency preference and the 2 MBH ceiling, since the heat-loss calculation rarely splits them.
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.