KB-125
Previously certified
EPA lists KB-125 under Hardy Manufacturing Co., Inc. as a previously certified hydronic heater.
The listed emission rate is 0.3 pounds per million BTU.
The listed HHV efficiency is 61 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 | 0.3 pounds per million BTU |
| HHV efficiency | 61 percent |
| Heat output | 119,457 BTU/hr maximum |
| Heat output maximum | 119,457 BTU/hr |
| Firebox | Not listed |
| CO | Not listed |
| Certified fuel | Cord Wood |
| Test method | Not listed |
| 2020 NSPS | No |
| Thermal storage | 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.
- KB-125
Other model lines from this manufacturer
- KB-165 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
- Klear Sky 400 — 0.3 pounds per million BTU
- Optimizer 350 — 0.3 pounds per million BTU
- X Series 200X — 0.3 pounds per million BTU
- 350X — 0.31 pounds per million BTU
- Classic Edge 550 — 0.31 pounds per million BTU
HHV efficiency
- Crown Royal RS7400E — 61 percent
- E4 — 61 percent
- Empire Elite 200/XT200 — 61 percent
- USV 100GS — 61 percent
- Crown Royal RS7200E — 60 percent
Heat output
- BioWin 350 — 119,000 BTU/hr maximum
- Komplett III LIGHT 35 KW — 120,000 BTU/hr maximum
- NEO HV60 — 26,340–213,941 BTU/hr
- Vedolux 350 — 118,724 BTU/hr maximum
- P4 Pellet 60 — 31,808–212,443 BTU/hr
Hardy Manufacturing Co., Inc. hub · EPA Certified Wood Heater Database