Pellet stove and wood stove figures
EPA lists 156 currently certified wood-stove rows and 109 currently certified pellet-stove rows in the snapshot dated 2026-10-23.
The median emission rate is 1.5 grams per hour for the wood-stove rows and 1.1 grams per hour for the pellet-stove rows.
The median HHV efficiency is 74 percent for the wood-stove rows and 77 percent for the pellet-stove rows.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
| EPA type | Current rows | All rows in the snapshot | Median g/hr | Median HHV % |
|---|---|---|---|---|
| Wood stove | 156 | 1156 | 1.5 | 74 |
| Pellet stove | 109 | 288 | 1.1 | 77 |
Both medians use grams per hour and HHV percent, the units EPA printed for room heaters. Central heaters use a different emission unit and are not in this table.
This page does not compare fuel cost. A cost-per-season calculator is not in this launch. Lists: pellet stoves and the wood-stove subtype pages linked from the footer.