ARDISAM Castle Serenity 41278
ARDISAM Castle Serenity 41278 is a non-catalytic pellet stove from ARDISAM certified at 1 g/hr particulate emissions with 78% HHV efficiency and a 12,807–26,493 BTU/h output range.
| Appliance type | pellet-stove |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Wood Pellets |
| Covered model numbers | Castle Serenity 41278 |
| Emission rate | 1 g/hr |
|---|---|
| Carbon monoxide | 0 g/min |
| Efficiency (HHV) | 78 % |
|---|
| Heat output (low) | 12807 BTU/h |
|---|---|
| Heat output (high) | 26493 BTU/h |
| 25C tax credit eligible (≥75% HHV) | Yes |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 325-23 |
What space does the ARDISAM Castle Serenity 41278 suit?
- Its 26,493 BTU/h peak output covers roughly 750–1,050 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.
- Certified burning Wood Pellets .
Similar pellet stoves
- SMG Hearth and Home HP 40 (0.74 g/hr)
- Freedom Stoves Independence PS21 (1.6 g/hr)
- United States Stove Company KP5517 (1.6 g/hr)
- Hearth and Home Technologies P42i-TC (1 g/hr)
- Hearth and Home Technologies P40i-C (0.69 g/hr)
- Gruppo Piazzetta S.P.A Sahara (1.3 g/hr)
Frequently asked questions
Is the ARDISAM Castle Serenity 41278 EPA certified?
Yes, the ARDISAM Castle Serenity 41278 is on the EPA's current list of certified wood heaters (certification number 325-23) and meets the 2020 NSPS Step 2 emission limits.
What is the ARDISAM Castle Serenity 41278's emission rate?
The ARDISAM Castle Serenity 41278 is certified at 1 grams of particulates per hour (tested with wood pellets). 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 ARDISAM Castle Serenity 41278 heat?
Roughly 750–1,050 sq ft, estimated from its 26,493 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 ARDISAM Castle Serenity 41278 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 ARDISAM Castle Serenity 41278'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)