Hearthstone Green Mountain 40
#18 in Wood stovesFull review
For a small to mid size home that wants long, clean catalytic burns and soapstone’s gentle heat in a compact stove.
Leisure Time $3,349 Lehman's $3,499$3,349
The Hearthstone Green Mountain 40 is the better stove overall, rated 3.3 to 3.3. The Hearthstone Lincoln costs $950 less ($2,399 vs $3,349).
Hearthstone Lincoln
#20 in Wood stovesFull review
For a small space such as a cabin, tiny home or single room that wants clean catalytic heat in a very narrow stove.
Leisure Time $2,399 Lehman's $2,549$2,399
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every wood stoves stove; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hearthstone Green Mountain 40 | Hearthstone Lincoln |
|---|---|---|
| Overall rating | 3.3/5 | 3.3/5 |
| Efficiency 30% | 95 79% EPA tested efficiency (HHV) | 92 78.5% EPA tested efficiency (HHV) |
| Value 30% | 0 $139.54 per 1,000 BTU of EPA tested output ($3,349, 24,000 BTU) | 0 $116.98 per 1,000 BTU of EPA tested output ($2,399, 20,507 BTU) |
| Emissions 15% | 58 1.1 g/h of smoke particles (EPA) | 54 1.1 g/h of smoke particles (EPA) |
| Warranty 10% | 100 limited lifetime warranty | 100 limited lifetime warranty |
| Convenience 15% | 35 takes 16 in logs, blower optional | 30 takes 18 in logs, no blower offered |
Specifications
| Hearthstone Green Mountain 40 | Hearthstone Lincoln | |
|---|---|---|
| EPA certification | ||
| EPA certified | Yes (2020 standard) | Yes (2020 standard) |
| Efficiency (HHV) | 79% | 78.5% |
| Emissions | 1.1 g/h | 1.1 g/h |
| Tested heat output | 14,000 to 24,000 BTU | 14,545 to 20,507 BTU |
| Heating | ||
| Fuel | Cord wood | Cord wood |
| Type | Freestanding | Freestanding |
| Advertised output | 40,000 BTU | 23,000 BTU |
| Heats up to | 1,400 sq ft | 575 sq ft |
| Catalytic | Yes | Yes |
| Blower | Optional | None offered |
| Thermostat | No | No |
| App control | No | No |
| Fuel | ||
| Firebox | 1.3 cu ft | 1 cu ft |
| Longest log | 16 in | 18 in |
| Power needed | None | None |
| Installation | ||
| Flue size | 6 in | 6 in |
| Mobile home approved | Yes | Yes |
| Safety listing | PFS | PFS |
| Dimensions | 23.25 x 19.375 x 30.375 in (W x D x H) | 14 x 24.5 x 28 in (W x D x H) |
| Weight | 350 lb | 250 lb |
| Warranty | Limited lifetime | Limited lifetime |