The Trane XR11 is a discontinued mid-efficiency heat pump with an efficiency of 11.5 SEER and 9.5 HSPF. Corrosion-resistant Weatherguard fasteners, full-side louvered panels with baked-on powder paint, and a DuraTuff rust-proof basepan protected the unit from rust and corrosion. The ClimaTuff compressor provided quiet, efficient operation. The XR11 heat pump used R22 refrigerant.
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