SMG Hearth and Home HP 40
SMG Hearth and Home HP 40 is a non-catalytic pellet stove from SMG Hearth and Home certified at 0.74 g/hr particulate emissions with 81% HHV efficiency and a 13,458–26,224 BTU/h output range.
| Appliance type | pellet-stove |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Wood Pellets |
| Covered model numbers | HP 40 |
| Emission rate | 0.74 g/hr |
|---|---|
| Carbon monoxide | 0.3 g/min |
| Efficiency (HHV) | 81 % |
|---|
| Heat output (low) | 13458 BTU/h |
|---|---|
| Heat output (high) | 26224 BTU/h |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 326-22 |
What space does the SMG Hearth and Home HP 40 suit?
- Its 26,224 BTU/h peak output covers roughly 750–1,050 sq ft at the 25–35 BTU/h-per-square-foot rule of thumb — see the sizing calculator to adjust for your insulation and climate.
- Certified burning Wood Pellets .
Compare the SMG Hearth and Home HP 40
Similar pellet stoves
- ARDISAM Castle Serenity 41278 (1 g/hr)
- Freedom Stoves Independence PS21 (1.6 g/hr)
- United States Stove Company KP5517 (1.6 g/hr)
- Hearth and Home Technologies P42i-TC (1 g/hr)
- Hearth and Home Technologies P40i-C (0.69 g/hr)
- Gruppo Piazzetta S.P.A Sahara (1.3 g/hr)
Frequently asked questions
Is the SMG Hearth and Home HP 40 EPA certified?
Yes, the SMG Hearth and Home HP 40 is on the EPA's current list of certified wood heaters (certification number 326-22) and meets the 2020 NSPS Step 2 emission limits.
What is the SMG Hearth and Home HP 40's emission rate?
The SMG Hearth and Home HP 40 is certified at 0.74 grams of particulates per hour (tested with wood pellets). Real-world emissions depend heavily on fuel moisture and operation — the lab figure assumes seasoned fuel and correct air settings.
How many square feet can the SMG Hearth and Home HP 40 heat?
Roughly 750–1,050 sq ft, estimated from its 26,224 BTU/h peak output at 25–35 BTU/h per square foot. Insulation, climate, ceiling height, and floor plan move this figure substantially in both directions.
Does the SMG Hearth and Home HP 40 qualify for a federal tax credit?
No — the federal 25C credit for biomass stoves was terminated for property placed in service after December 31, 2025. The SMG Hearth and Home HP 40's certified efficiency is 81% HHV, which met the credit's ≥75% HHV threshold while it existed. State and local incentive programs may still apply — check your state energy office and air district.
Sources
- cfpub.epa.gov (retrieved 2026-07-23)