The York Affinity YZB is a discontinued single-stage heat pump with efficiency ratings of 13 SEER and 8.6 HSPF. The unit's compressor was protected by a high pressure relief valve and temperature sensors, along with a factory-installed filter drier. Improved fan design technology, a composite base pan and an isolated compressor compartment helped to lower sound levels, while easy service access was provided by a full end access panel with handle. The Affinity YZB was part of the York Affinity series.
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