SMART HV23
Currently certified
EPA lists SMART HV23 under Hargassner GmbH as a currently certified hydronic heater.
The listed emission rate is 0.11 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 | 0.11 pounds per million BTU |
| HHV efficiency | 73 percent |
| Heat output | 10,166–78,335 BTU/hr |
| Heat output maximum | Not listed |
| Firebox | 3.53 cu ft |
| CO | 1.632 g/min |
| Certified fuel | Cord Wood |
| Test method | Not listed |
| 2020 NSPS | Yes |
| 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.
- SMART HV23
Other model lines from this manufacturer
- ECO-HK 120 Multifuel Currently certified
- NEO HV60 Currently certified
- Smart PK32, Nano PK32 Currently certified
- ECO-HK 70 Multifuel 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
- Vedolux 37 — 0.11 pounds per million BTU
- Vedolux 55 — 0.11 pounds per million BTU
- Woodmaster Mini Boiler — 0.11 pounds per million BTU
- Central Boiler Classic Edge 360, WoodMaster– CleanFire 300 — 0.12 pounds per million BTU
- Central Boiler Classic Edge 760, WoodMaster– CleanFire 700 — 0.1 pounds per million BTU
HHV efficiency
- ENVIRO CHIP-500 — 73 percent
- GT Series GT-6000 — 73 percent
- Kedel RTB102 — 73 percent
- S3 Turbo 50 — 73 percent
- Vedolux 650 — 73 percent
Heat output
- Pellematic Smart XS (Condensing Mode) — 20,357–64,851 BTU/hr
- HP 14 — 47,800 BTU/hr maximum
- Pellematic 20 — 9,323–70,418 BTU/hr
- PE1 Pellet 20 — 9,656–67,744 BTU/hr
- P4 Unit 15 — 50,800 BTU/hr maximum