Spartherm M 700 Insert
Spartherm M 700 Insert is a non-catalytic wood stove from Spartherm certified at 1.1 g/hr particulate emissions with 68% HHV efficiency and a 13,129–29,452 BTU/h output range (previously certified, no longer in production).
Previously certified (out of production). This model appears in the EPA Certified Wood Heater Database but is no longer on the current certified list, which usually means it is no longer manufactured. The specifications below are its certified figures, kept for reference and for owners of installed units. Browse currently certified heaters for models sold new today.
| Appliance type | wood-stove |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | Spartherm M 700 Insert, Spartherm M 700 ZC, Spartherm M 700 Module |
| Emission rate | 1.1 g/hr |
|---|---|
| Carbon monoxide | 1.69 g/min |
| Efficiency (HHV) | 68 % |
|---|
| Heat output (low) | 13129 BTU/h |
|---|---|
| Heat output (high) | 29452 BTU/h |
| Firebox volume | 1.58 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 218-19 |
What space does the Spartherm M 700 Insert suit?
- Its 29,452 BTU/h peak output covers roughly 850–1,200 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 1.58 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 1.7 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
- FPI/Regency Fireplace Products CI2700 (1.3 g/hr)
- Pacific Energy Fireplace Products Limited NEO 2.5 LE2 (1.6 g/hr)
- Hearth and Home Technologies Quadra-Fire 21M-ACC-C (1.7 g/hr)
- Foyers Supreme Astra 32 (1.5 g/hr)
- United States Stove Company US1269E (1.8 g/hr)
- Pacific Energy Fireplace Products Limited True North TN20 Series B (1.6 g/hr)
Frequently asked questions
Is the Spartherm M 700 Insert EPA certified?
The Spartherm M 700 Insert holds EPA certification number 218-19 but is no longer on the current certified list — it is previously certified, which usually means the model is out of production. Already-installed units are unaffected by that status in most jurisdictions.
What is the Spartherm M 700 Insert's emission rate?
The Spartherm M 700 Insert is certified at 1.1 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 Spartherm M 700 Insert heat?
Roughly 850–1,200 sq ft, estimated from its 29,452 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 Spartherm M 700 Insert 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 Spartherm M 700 Insert's certified efficiency is 68% HHV, which did not meet 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)