S3 Turbo 50
Currently certified
EPA lists S3 Turbo 50 under Fröling Heizkessel und Behälterbau Ges.m.b.H as a currently certified hydronic heater.
The listed emission rate is 0.12 pounds per million BTU.
The listed HHV efficiency is 73 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Currently certified |
| Type | Hydronic Heater |
| Subtype | Non-Catalytic Stove |
| Emission | 0.12 pounds per million BTU |
| HHV efficiency | 73 percent |
| Heat output | 24,929–83,097 BTU/hr |
| Heat output maximum | 83,097 BTU/hr |
| Firebox | 6.78 cu ft |
| CO | Not listed |
| Certified fuel | Cord Wood |
| Test method | Not listed |
| 2020 NSPS | Yes |
| Thermal storage | Yes |
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.
- S3 Turbo 50
Other model lines from this manufacturer
- P4 Pellet 60 Currently certified
- PE1 Pellet 20 Currently certified
- PE1 Pellet 35 Currently certified
- S3 Turbo 30 Currently certified
- FHG 20/30 Previously certified
- P4 Unit 100 Previously certified
- P4 Unit 15 Previously certified
- P4 Unit 20 Previously certified
- P4 Unit 32 Previously certified
- P4 Unit 38 Previously certified
- P4 Unit 48 Previously certified
- P4 Unit 60 Previously certified
- P4 Unit 8 Previously certified
- P4 Unit 80 Previously certified
- T4-130 Previously certified
- T4-150 Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Hydronic Heater model lines that list it. Ties are ordered by model name.
Emission
- Central Boiler Classic Edge 360, WoodMaster– CleanFire 300 — 0.12 pounds per million BTU
- CleanFire 300 (Central Boiler Classic Edge 360) — 0.12 pounds per million BTU
- SE210 — 0.12 pounds per million BTU
- SMART HV23 — 0.11 pounds per million BTU
- Vedolux 37 — 0.11 pounds per million BTU
HHV efficiency
- ENVIRO CHIP-500 — 73 percent
- GT Series GT-6000 — 73 percent
- Kedel RTB102 — 73 percent
- SMART HV23 — 73 percent
- Vedolux 650 — 73 percent
Heat output
- BioWin 152 — 55,000 BTU/hr maximum
- Alpha-60 — 51,900 BTU/hr maximum
- BioWin 150 — 51,900 BTU/hr maximum
- S3 Turbo 30 — 12,997–99,594 BTU/hr
- BioWIN 152 — 51,200 BTU/hr maximum
Fröling Heizkessel und Behälterbau Ges.m.b.H hub · EPA Certified Wood Heater Database