Current DOE CCMS record
VIESSMANN VR1-91 Boiler Specifications
Source facts reported to DOE for this exact model identifier.
Key specifications
- DOE-reported brand
- VIESSMANN
- Exact model number
- VR1-91
- Boiler class
- Oil-fired hot water boiler
- Input capacity
- 91,000 BTU/h
- AFUE
- 87%
- Standby power
- 4 W
- Off-mode power
- 0 W
DOE source details
- DOE basic model number(s)
- VR1-91
Source & freshness
Source snapshot retrieved: September 20, 2026
These records were reported to DOE. Appearance here is not a DOE compliance determination, independent test, or approval.