HP50S Comfortbilt
Previously certified
EPA lists HP50S Comfortbilt under Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) as a previously certified catalytic pellet stove.
The listed emission rate is 2.5 grams per hour.
The listed HHV efficiency is 81 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Previously certified |
| Type | Pellet Stove |
| Subtype | Catalytic Stove |
| Emission | 2.5 grams per hour |
| HHV efficiency | 81 percent |
| Heat output | 13,400–38,600 BTU/hr |
| Firebox | Not applicable |
| CO | Not listed |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | No |
Retail names in the model line
These are the names split from EPA's model cell. They are aliases for this line, not separate listings.
- HP50S Comfortbilt
Other model lines from this manufacturer
- HP 21 Previously certified
- HP 61 Previously certified
- HP22 ComfortBilt Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Pellet Stove model lines that list it. Ties are ordered by model name.
Emission
- Blaze King Auto Light PAL-4000 — 2.5 grams per hour
- DC Series Osburn Volta and Drolet Edison — 2.5 grams per hour
- Tiburon — 2.5 grams per hour
- 65 Series Euromax (2014), Eco-65 (2014), and Osburn 7000 (2014) — 2.4 grams per hour
- Eagle 2001 — 2.6 grams per hour
HHV efficiency
- ComfortBilt HP22N, HP22, and HP22i Insert — 81 percent
- ComfortBilt HP55 — 81 percent
- Francesca 2015 (01-US-001A), Nicole (2005ERU1), RV 80 Ceramica (014-US-007A), Francesca Top Outlet — 81 percent
- HP 40 — 81 percent
- HP75C — 81 percent
Heat output
- Harman P43-C — 18,783–33,252 BTU/hr
- Quadra-Fire TREKKER-MBK, TREKKER-PMH, TREKKER-TWL TREKKERI-MBK, TREKKERI-PMH, TREKKERI-TWL (formerly the Quadra Fire Mount Vernon E2-C, Quadra Fire Mount Vernon E2-C Insert) — 12,682–39,428 BTU/hr
- 25-SSP01,25-SSP01S,55-SHSSP01,55SHSSP01S, 55-TRSSP01, and 55TRSSP01S — 15,997–36,144 BTU/hr
- G2-A130WTS, G2-C130WTS, G2-H130WTS, G2-J130WTS, G2-N130WTS — 8,950–42,843 BTU/hr
- 509-1 Optimum — 19,573–32,183 BTU/hr
Ningbo Hongsheng Fireplace Company (SMG Hearth and Home, LLC) hub · EPA Certified Wood Heater Database