P4 Unit 48
Previously certified
EPA lists P4 Unit 48 under Fröling Heizkessel und Behälterbau Ges.m.b.H as a previously certified hydronic heater.
The listed emission rate is 0.03 pounds per million BTU.
The listed HHV efficiency is 86 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 |
|---|---|
| Status | Previously certified |
| Type | Hydronic Heater |
| Subtype | Non-Catalytic Stove |
| Emission | 0.03 pounds per million BTU |
| HHV efficiency | 86 percent |
| Heat output | 164,000 BTU/hr maximum |
| Heat output maximum | 164,000 BTU/hr |
| Firebox | Not applicable |
| CO | Not listed |
| Certified fuel | Wood Pellets |
| Test method | Not listed |
| 2020 NSPS | No |
| 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.
- P4 Unit 48
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
- S3 Turbo 50 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 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
- CP 1000 — 0.03 pounds per million BTU
- CP 500 — 0.03 pounds per million BTU
- Maxim M255 PE — 0.03 pounds per million BTU
- P4 Unit 100 — 0.03 pounds per million BTU
- P4 Unit 15 — 0.03 pounds per million BTU
HHV efficiency
- Alpha-100 — 86 percent
- Alpha-60 — 86 percent
- BioWin 150 — 86 percent
- BioWin 260 — 86 percent
- Central Boiler Classic Edge 960, WoodMaster CleanFire 900 — 86 percent
Heat output
- P50 — 163,000 BTU/hr maximum
- Maxim M255P/M255PE — 165,215 BTU/hr maximum
- Classic Edge 550 — 162,170 BTU/hr maximum
- Kedel RTB 170 — 162,000 BTU/hr maximum
- Blaze HE — 166,109 BTU/hr maximum
Fröling Heizkessel und Behälterbau Ges.m.b.H hub · EPA Certified Wood Heater Database