Sierra Products S8000II TEC
Sierra Products S8000II TEC is a catalytic wood stove from Sierra Products certified at 1.7 g/hr particulate emissions with 78% HHV efficiency and a 16,671–71,267 BTU/h output range.
| Appliance type | wood-stove |
|---|---|
| Combustion technology | Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | S8000II TEC |
| Emission rate | 1.7 g/hr |
|---|---|
| Carbon monoxide | 0.6 g/min |
| Efficiency (HHV) | 78 % |
|---|
| Heat output (low) | 16671 BTU/h |
|---|---|
| Heat output (high) | 71267 BTU/h |
| Firebox volume | 2.93 cu ft |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 303-22 |
What space does the Sierra Products S8000II TEC suit?
- Its 71,267 BTU/h peak output covers roughly 2,050–2,850 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.
- The 2.93 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 3.1 cords per season at the midpoint of its output range (8 burn-hours/day, 150-day season, 22 MMBtu/cord — see methodology).
- Certified burning Cord Wood — the test fuel closest to real-world firewood.
Similar wood stoves
- Stove Builder International 1.4R Series: Osburn 950 N (1.7 g/hr)
- Travis Industries Evergreen (1.5 g/hr)
- GHP Group Pleasant Hearth Large Wood Stove GWS-2200 (1.5 g/hr)
- Travis Industries Medium Flush Wood Hybrid Fyre Insert (1.7 g/hr)
- Hearth and Home Technologies Quadra-Fire Pioneer - III (2 g/hr)
- Travis Industries 36 Elite (1.3 g/hr)
Frequently asked questions
Is the Sierra Products S8000II TEC EPA certified?
Yes, the Sierra Products S8000II TEC is on the EPA's current list of certified wood heaters (certification number 303-22) and meets the 2020 NSPS Step 2 emission limits.
What is the Sierra Products S8000II TEC's emission rate?
The Sierra Products S8000II TEC is certified at 1.7 grams of particulates per hour (tested with cord wood). 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 Sierra Products S8000II TEC heat?
Roughly 2,050–2,850 sq ft, estimated from its 71,267 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 Sierra Products S8000II TEC 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 Sierra Products S8000II TEC's certified efficiency is 78% 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)