FBX S, FBX S+, FBX T, FBX R, FBX BUMP, ZEFIRO
Currently certified
EPA lists FBX S, FBX S+, FBX T, FBX R, FBX BUMP, ZEFIRO under Dielle SpA as a currently certified pellet stove.
The listed emission rate is 1.9 grams per hour.
The listed HHV efficiency is 79 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Currently certified |
| Type | Pellet Stove |
| Subtype | Non-Catalytic Stove |
| Emission | 1.9 grams per hour |
| HHV efficiency | 79 percent |
| Heat output | 16,320–29,464 BTU/hr |
| Firebox | Not applicable |
| CO | 0.217 g/min |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | No |
Retail names in the model line
These are the names split from EPA's model cell. They are aliases for this line, not separate listings.
- FBX S
- FBX S+
- FBX T
- FBX R
- FBX BUMP
- ZEFIRO
Other model lines from this manufacturer
- Grecale, Grecale Glass, Round, Round Glass, Ethesia, Ethesia Glass Currently certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Pellet Stove model lines that list it. Ties are ordered by model name.
Emission
- 5660E, AP5660, AP5660L, AP5660PE, DNMP566 — 1.9 grams per hour
- Eclipse-P II — 1.9 grams per hour
- Enviro M55-FS-2, Enviro M55C-FS-2, Enviro M55C-FPI-2, FPI GC60-2, and FPI GCI60-2 — 1.9 grams per hour
- GW1949 — 1.9 grams per hour
- HP22 ComfortBilt — 1.9 grams per hour
HHV efficiency
- 25-SSP01,25-SSP01S,55-SHSSP01,55SHSSP01S, 55-TRSSP01, and 55TRSSP01S — 79 percent
- 509-1 Optimum — 79 percent
- Element-P II — 79 percent
- G2-ABF66WTS, G2-CBF66WTS, G2-HBF66WTS, G2-JBF66WTS, G2-NBF66WTS — 79 percent
- Harman P61-C — 79 percent
Heat output
- SP1000E, KP1000E, AP1000E, US1000E — 6,580–39,121 BTU/hr
- Absolute 43 — 11,800–33,900 BTU/hr
- Blaze King Auto Light PAL-4000 — 12,200–33,700 BTU/hr
- PelPro PP130 — 10,600–35,000 BTU/hr
- Whitfield Advantage WP-2 — 10,900–35,100 BTU/hr