STUV 1668IN, STUV 1668 CUBE, STUV 1668H, STUV 1668-Z
Currently certified
EPA lists STUV 1668IN, STUV 1668 CUBE, STUV 1668H, STUV 1668-Z under STUV AMERICA Inc. as a currently certified non-catalytic wood stove.
EPA lists 2 rows for this model line, with emission rates of 1.7 grams per hour and 1.9 grams per hour.
The listed HHV efficiency is 66 percent.
Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.
EPA rows
| Field | Row 1 | Row 2 |
|---|---|---|
| Status | Currently certified | Previously certified |
| Type | Wood Stove | Wood Stove |
| Subtype | Non-Catalytic Stove | Non-Catalytic Stove |
| Emission | 1.7 grams per hour | 1.9 grams per hour |
| HHV efficiency | 66 percent | 61 percent |
| Heat output | 22,179–23,727 BTU/hr | 20,480–24,818 BTU/hr |
| Firebox | 1.94 cu ft | 1.94 cu ft |
| CO | 1.7 g/min | 3.11 g/min |
| Certified fuel | Crib Wood | Crib Wood |
| Test method | Not listed | Not listed |
| 2020 NSPS | Yes | 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.
- STUV 1668IN
- STUV 1668 CUBE
- STUV 1668H
- STUV 1668-Z
Other model lines from this manufacturer
- 30 Compact, 30 Compact-H, 30 Compact-one Currently certified
- Six 66-50 Currently certified
- STUV 1658IN, STUV 1658CUBE, STUV 1658H, STUV 1658-Z Currently certified
- STÛV 1678IN, STÛV 1678 CUBE, STÛV 1678H, STÛV 1678-Z Currently certified
- STUV 6 IN 66x50 (26), STUV 6 H 66x50 (26) Currently certified
- STÛV 6 IN 76x60, STÛV 6 H 76x60 Currently certified
- STUV SIX 76-55 Currently certified
- 30-H Previously certified
- STUV 1678IN, STUV 1678CUBE, STUV 1678H, STUV 1678-Z Previously certified
- STUV SIX 76-60 Previously certified
Nearest model lines by EPA figures
Nearest means the smallest absolute difference on that EPA figure, among other Wood Stove model lines that list it. Ties are ordered by model name.
Emission
- 1.4R Series: Osburn 950 N, Escape 1200 N, Gateway 1400 N, Solution 1.4 N, Spark II N, Fox N, Deco Nano N, S250 N, HES140 N, Blue Ridge 100 N, SP1400 N, SL1400 N — 1.7 grams per hour
- 21NC — 1.7 grams per hour
- 81C, Carolina 82C — 1.7 grams per hour
- Charnwood Skye E700 — 1.7 grams per hour
- E-1/90 — 1.7 grams per hour
HHV efficiency
- 16 IN Model Line: Lumis 16 (16 IN), Flair 25 (16 IN), Regal 16 (16IN) — 66 percent
- Everest II Series HE300 II, HE325, Everest II, St. Clair 3000 — 66 percent
- F370 — 66 percent
- Flair 34, Lumis 32 - Cast Iron, Lumis 32 - Soapstone, Regal 32 - Soapstone, Regal 32 - Cast Iron — 66 percent
- Focus 320 SBR, Onyx SBR — 66 percent
Heat output
- Jotul Oslo F-500 — 10,900–35,000 BTU/hr
- S-33,H33,R33, 33 — 8,600–37,300 BTU/hr
- S-33,S-83,H33,R33,X33 — 8,600–37,300 BTU/hr
- 8 TDIC — 10,900–35,100 BTU/hr
- Energy King Bay 2000C — 11,400–34,600 BTU/hr