USV 100GS
Previously certified
EPA lists USV 100GS under ESIM as a previously certified hydronic heater.
The listed emission rate is 0.2 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 | 0.2 pounds per million BTU |
| HHV efficiency | 61 percent |
| Heat output | 350,367 BTU/hr maximum |
| Heat output maximum | 350,367 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.
- USV 100GS
Other model lines from this manufacturer
No other model line in this snapshot uses this manufacturer string.
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
- GARN WHS-1000H and WHS1000V — 0.2 pounds per million BTU
- GARN WHS-1000H, GARN WHS-1000V — 0.2 pounds per million BTU
- ENVIRO CHIP-500 — 0.19 pounds per million BTU
- G2-G2 — 0.19 pounds per million BTU
- Vedolux 30 — 0.19 pounds per million BTU
HHV efficiency
- Crown Royal RS7400E — 61 percent
- E4 — 61 percent
- Empire Elite 200/XT200 — 61 percent
- KB-125 — 61 percent
- Crown Royal RS7200E — 60 percent
Heat output
- G Series G400G400s — 350,000 BTU/hr maximum
- P4 Unit 100 — 341,000 BTU/hr maximum
- P 100 — 360,000 BTU/hr maximum
- 400-4S — 400,000 BTU/hr maximum
- Optimizer 350 — 400,000 BTU/hr maximum