HP42-Alpine
Currently certified
EPA lists HP42-Alpine under SMG Hearth and Home, LLC as a currently certified pellet stove.
The listed emission rate is 1.1 grams per hour.
The listed HHV efficiency is 86 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Currently certified |
| Type | Pellet Stove |
| Subtype | Non-Catalytic Stove |
| Emission | 1.1 grams per hour |
| HHV efficiency | 86 percent |
| Heat output | 14,567–42,370 BTU/hr |
| Firebox | Not applicable |
| CO | 0.041 g/min |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | Yes |
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.
- HP42-Alpine
Other model lines from this manufacturer
- ComfortBilt HP22N, HP22, and HP22i Insert Currently certified
- ComfortBilt HP50S Currently certified
- HP 21 Currently certified
- HP 40 Currently certified
- HP 61 Currently certified
- HP41 - Alpine Currently certified
- HP75C Currently certified
- ComfortBilt HP54 Previously certified
- ComfortBilt HP55 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
- 5770E, AP5770E, VG5770E, US5770E, KP5770E, KP5770E-W, CGPS2100, DH3000, BHPS30 — 1.1 grams per hour
- 5780-E, AP5780-E, VG5780-E, SP5780-E, SP58-E — 1.1 grams per hour
- Castle Serenity 12327 — 1.1 grams per hour
- EF3, Meridan, Vista Flame 100, Greenfire GF55, GF55FPI — 1.1 grams per hour
- Element-P II — 1.1 grams per hour
HHV efficiency
- PS20W Model Line: PS20W, PS20WTS, C30XL, H30XL, J30XL, N30XL, C20W, H20W, J20W, N20W, C20WTS, H20WTS, J20WTS, and N20WTS — 85 percent
- Rafael 55a, Europa 75a — 85 percent
- V3.4 — 85 percent
- V5.2 — 87 percent
- ComfortBilt HP54 — 84 percent
Heat output
- ComfortBilt HP50S — 17,794–39,170 BTU/hr
- Maxx-B — 9,700–47,600 BTU/hr
- Harman Absolute 63 — 10,164–46,399 BTU/hr
- HP 61 — 17,617–39,769 BTU/hr
- G2-ABF66WTS, G2-CBF66WTS, G2-HBF66WTS, G2-JBF66WTS, G2-NBF66WTS — 16,573–40,842 BTU/hr
SMG Hearth and Home, LLC hub · EPA Certified Wood Heater Database