Hearth and Home Technologies P42i-TC vs SMG Hearth and Home HP 40
The SMG Hearth and Home HP 40 is the cleaner burner: 0.74 g/hr certified particulate emissions versus 1 g/hr. The SMG Hearth and Home HP 40 is the more efficient unit: 81% versus 79% HHV — more heat from every cord. The Hearth and Home Technologies P42i-TC produces more peak heat (32,782 vs 26,224 BTU/h), suiting roughly 950–1,300 sq ft.
| Hearth and Home Technologies P42i-TC | SMG Hearth and Home HP 40 | |
|---|---|---|
| Appliance type | pellet-stove | pellet-stove |
| Combustion technology | Non-Catalytic Stove | Non-Catalytic Stove |
| Certified fuel | Wood Pellets | Wood Pellets |
| Emission rate | 1 g/hr | 0.74 g/hr |
| Efficiency (HHV) | 79 % | 81 % |
| Heat output (low) | 5637 BTU/h | 13458 BTU/h |
| Heat output (high) | 32782 BTU/h | 26224 BTU/h |
| Carbon monoxide | 0.31 g/min | 0.3 g/min |
| 25C tax credit eligible (≥75% HHV) | Yes | Yes |
| 2020 NSPS compliant | Yes | Yes |
| Currently in production | Yes | Yes |
| EPA certification number | 344-23 | 326-22 |
| Covered model numbers | P42i-TC | HP 40 |
Frequently asked questions
Which burns cleaner, the Hearth and Home Technologies P42i-TC or the SMG Hearth and Home HP 40?
The SMG Hearth and Home HP 40: 0.74 g/hr certified particulate emissions versus 1 g/hr for the Hearth and Home Technologies P42i-TC.
Are the Hearth and Home Technologies P42i-TC and SMG Hearth and Home HP 40 both EPA certified?
Yes — both appear on the U.S. EPA's current list of certified wood heaters, and every figure on this page comes from their certification records.