Hearthstone
EPA lists 13 currently certified model lines and 26 previously certified model lines for Hearthstone.
The lowest listed emission rate among those currently certified lines is 0.51 grams per hour, on Green Mountain 60-1 (Model 8661), Shelburne 3 (Model 8373), Hipster 20-….
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
The hub title is the brand token inside the EPA manufacturer string. Hase rows stay on the Hase hub; they are not folded in, because that string leads with Hase.
Evidence used for this hub: EPA manufacturer string: Hearthstone Quality Home Heating Products Inc.
EPA manufacturer string: Hearthstone Quality Home Heating Products Inc..
Currently certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Green Mountain 60-1 (Model 8661), Shelburne 3 (Model 8373), Hipster 20-1 (Model 8261) | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.51 | 81% | 14,533–35,571 BTU/hr | 2.04 cu ft | Crib Wood |
| Green Mountain 80-1 (Model 8681), Okemo (Model 8380), Hipster 30 (Model 8280) | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.53 | 80% | 14,846–33,424 BTU/hr | 3.16 cu ft | Crib Wood |
| Heritage 8024 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.54 | 77% | 12,317–35,845 BTU/hr | 2.18 cu ft | Crib Wood |
| Mansfield 8013 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.54 | 78% | 14,043–32,200 BTU/hr | 2.88 cu ft | Crib Wood |
| Green Mountain 60 8660, Hipster 20 AMB8260, Shelburne 8372 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.6 | 79% | 12,608–33,576 BTU/hr | 2.03 cu ft | Crib Wood |
| Manchester 8362 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.65 | 78% | 14,111–33,038 BTU/hr | 2.45 cu ft | Crib Wood |
| Green Mountain 80 8680 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.67 | 81% | 15,069–33,396 BTU/hr | 3.16 cu ft | Crib Wood |
| Bari 8171, Bari Plus 8172 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.94 | 76% | 14,065–26,036 BTU/hr | 1.25 cu ft | Crib Wood |
| Castleton 8031 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 0.98 | 77% | 12,501–24,540 BTU/hr | 1.9 cu ft | Crib Wood |
| Green Mountain 40 Series: Green Mountain 40 (8640), Craftsbury 2 (8392), Hipster 14 (AMB8240) | Hearthstone Quality Home Heating Products Inc. | Currently certified | 1.1 | 79% | 13,876–31,581 BTU/hr | 1.32 cu ft | Crib Wood |
| Lincoln 8060, Green Mountain 20 (8620), Dorset (8330) | Hearthstone Quality Home Heating Products Inc. | Currently certified | 1.1 | 79% | 14,545–20,507 BTU/hr | 1 cu ft | Crib Wood |
| Clydesdale 8492 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 1.16 | 79% | 14,829–32,588 BTU/hr | 2.35 cu ft | Crib Wood |
| WFP100 | Hearthstone Quality Home Heating Products Inc. | Currently certified | 1.6 | 64% | 16,600–43,000 BTU/hr | 4.28 cu ft | Cord Wood |
Previously certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Heritage 8090 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 1.3 | Not listed | 15,300–31,200 BTU/hr | Not listed | Not listed |
| Heritage 8091, Manchester 8330 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 1.3 | Not listed | 15,300–31,200 BTU/hr | Not listed | Crib Wood |
| Homestead 8570 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 1.9 | 68% | 10,500–33,600 BTU/hr | Not listed | Crib Wood |
| Heritage 8023 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2 | 70% | 11,660–23,791 BTU/hr | Not listed | Crib Wood |
| Manchester 2 8361 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.1 | 71% | 11,600–34,000 BTU/hr | Not listed | Crib Wood |
| Shelburne 1 8371 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.1 | 70% | 11,800–32,400 BTU/hr | Not listed | Crib Wood |
| Shelburne Model 8370 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.1 | Not listed | 11,800–32,400 BTU/hr | Not listed | Not listed |
| Heritage | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.3 | Not listed | 10,700–29,400 BTU/hr | Not listed | Not listed |
| Phoenix 8612 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.4 | 70% | 10,500–41,500 BTU/hr | Not listed | Crib Wood |
| Tula 8190/8191 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.5 | 72% | 11,500–29,300 BTU/hr | Not listed | Crib Wood |
| Castleton 8030 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.7 | 72% | 11,400–24,600 BTU/hr | Not listed | Crib Wood |
| Heritage (8022) | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.7 | 67% | 11,700–32,800 BTU/hr | Not listed | Crib Wood |
| Heritage I (8021) | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.7 | Not listed | 11,700–32,800 BTU/hr | Not listed | Crib Wood |
| Mansfield 1 8011 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.9 | Not listed | 11,400–28,900 BTU/hr | Not listed | Not listed |
| Mansfield 2 8012 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 2.9 | 67% | 11,400–28,900 BTU/hr | Not listed | Crib Wood |
| Manchester 8360 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3 | 71% | 11,300–47,500 BTU/hr | Not listed | Crib Wood |
| Tribute 8040 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3 | 74% | 10,600–28,300 BTU/hr | Not listed | Crib Wood |
| Craftsbury 1 8391 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.1 | 74% | 11,000–25,600 BTU/hr | Not listed | Crib Wood |
| Craftsbury 8390 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.1 | Not listed | 11,000–25,600 BTU/hr | Not listed | Not listed |
| Equinox 8000 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.1 | 72% | 12,000–37,900 BTU/hr | Not listed | Crib Wood |
| Clydesdale 8490 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.2 | 72% | 11,900–33,100 BTU/hr | Not listed | Crib Wood |
| Clydesdale 8491 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.2 | 72% | 11,900–33,100 BTU/hr | Not listed | Crib Wood |
| Bennington | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.6 | Not listed | 11,900–32,600 BTU/hr | Not listed | Crib Wood |
| Starlet | Hearthstone Quality Home Heating Products Inc. | Previously certified | 3.6 | Not listed | 9,200–25,400 BTU/hr | Not listed | Crib Wood |
| Nestor Martin S43, SP43, H43, and C43 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 4.2 | 66% | 11,450–30,850 BTU/hr | Not listed | Crib Wood |
| Morgan 8470 | Hearthstone Quality Home Heating Products Inc. | Previously certified | 4.3 | 72% | 10,500–29,300 BTU/hr | Not listed | Crib Wood |