- ENERGY STAR® qualifying efficiency up to 98% AFUE provides more heat for less.
- Modulating design continuously adjusts heating level in small increments to match the degree of comfort you need precisely.
- Variable speed blower provides quiet, efficient circulation.
- Integrated ClimaTrak™ Comfort System tailors operation to the needs of your locale.
The YP9C models are recognized as the Most Efficient of ENERGY STAR® 2014 when used with the Affinity™ Residential Communicating Control.