Reaching up to 18 SEER, the Affinity Series is York's top-tier heat pump product line. This series consists of two units, the Affinity YZH, which offers 18 SEER/10 HSPF, and the YZF, which offers 16 SEER/9 HSPF. Units are available in 2- to 5-ton models, all of which meet Energy Star standards for efficiency.
While only the 18 SEER model has a two-stage scroll compressor, both units feature York's QuietDrive system, which combines a swept fan, composite base pan and separate compressor space to keep system noise at a minimum. Units also are equipped with a "demand defrost" coil designed to reduce the defrost cycle on the outdoor coil.
The heat pumps are finished in a powder-coated paint and have sealed electrical contractors and a rigid base pan for increased durability. Optional accessories, such as a programmable thermostat, also are available for this unit.
There are also several discontinued sub-series of heat pumps within the Affinity series, including the Affinity 8T, with an efficiency of up to 18 SEER and 9.4 HSPF; Affinity YZB, which offered an efficiency of 13 SEER and 8.6 HSPF; and Affinity YZE, with an efficiency of up to 15 SEER and 9.8 HSPF.
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