Innovative Hearth Products Ladera CAT WRT3920WS
Innovative Hearth Products Ladera CAT WRT3920WS is a catalytic wood stove from Innovative Hearth Products certified at 1.8 g/hr particulate emissions with 65% HHV efficiency and a 12,934–22,847 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 | Catalytic Stove |
| Certified fuel | Crib Wood |
| Covered model numbers | Ladera CAT WRT3920WS |
| Emission rate | 1.8 g/hr |
|---|---|
| Carbon monoxide | 0.18 g/min |
| Efficiency (HHV) | 65 % |
|---|
| Heat output (low) | 12934 BTU/h |
|---|---|
| Heat output (high) | 22847 BTU/h |
| Firebox volume | 1.68 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | No |
| EPA certification number | 111-17 |
What space does the Innovative Hearth Products Ladera CAT WRT3920WS suit?
- Its 22,847 BTU/h peak output covers roughly 650–900 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 1.68 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 1.5 cords per season at the midpoint of its output range (8 burn-hours/day, 150-day season, 22 MMBtu/cord — see methodology).
- Certified burning Crib Wood .
Similar wood stoves
- Rais A/S Viva 100 L (CA) USA (1.1 g/hr)
- STUV AMERICA STUV SIX 76-55 (1.86 g/hr)
- RSF / Industrial Chimney Company, Incorporated Focus 320 SBR (1.4 g/hr)
- Pacific Energy Fireplace Products Limited Vista LE (1.9 g/hr)
- Foyers Supreme Fusion 18 18FN (1.9 g/hr)
- Stove Builder International 1.7 Series - Archway 1700 (1.3 g/hr)
Frequently asked questions
Is the Innovative Hearth Products Ladera CAT WRT3920WS EPA certified?
The Innovative Hearth Products Ladera CAT WRT3920WS holds EPA certification number 111-17 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 Innovative Hearth Products Ladera CAT WRT3920WS's emission rate?
The Innovative Hearth Products Ladera CAT WRT3920WS is certified at 1.8 grams of particulates per hour (tested with crib 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 Innovative Hearth Products Ladera CAT WRT3920WS heat?
Roughly 650–900 sq ft, estimated from its 22,847 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 Innovative Hearth Products Ladera CAT WRT3920WS 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 Innovative Hearth Products Ladera CAT WRT3920WS's certified efficiency is 65% 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)