Spartherm
EPA lists 3 currently certified model lines and 1 previously certified model line for Spartherm.
The lowest listed emission rate among those currently certified lines is 1.3 grams per hour, on L 800 ZC, L 800 Module, L 800 Insert.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
Models are grouped under the manufacturer name EPA published.
Evidence used for this hub: No retail-brand mapping is recorded. The hub title is the EPA manufacturer string.
EPA manufacturer string: Spartherm.
Currently certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| L 800 ZC, L 800 Module, L 800 Insert Name indicates insert | Spartherm | Currently certified | 1.3 | 71% | 19,931–20,406 BTU/hr | 1.56 cu ft | Crib Wood |
| Spartherm M 700 Series: Spartherm M 700 Insert, Spartherm M 700 ZC, and Spartherm M 700 Module Name indicates insert | Spartherm | Currently certified | 1.7 | 66% | 24,269–24,906 BTU/hr | 1.58 cu ft | Crib Wood |
| Spartherm S 600 Insert, Spartherm S 600 ZC, Spartherm S 600 Module Name indicates insert | Spartherm | Currently certified | 1.8 | 62% | 20,345–21,299 BTU/hr | 0.94 cu ft | Crib Wood |
Previously certified
| Model line | EPA manufacturer | Status | Emission (g/hr) | HHV efficiency | Heat output | Firebox | Fuel |
|---|---|---|---|---|---|---|---|
| Spartherm M 700 Insert, Spartherm M 700 ZC, Spartherm M 700 Module Name indicates insert | Spartherm | Previously certified | 1.1 | 68% | 13,129–29,452 BTU/hr | 1.58 cu ft | Cord Wood |