RQPL-B (2 - 4 Ton) SeriesThe Compliant Scroll® Compressor.All of our residential package units - regardless of efficiency level-feature the Scroll Compressor. These scroll compressors use a more advanced technology than traditional reciprocating compressors. They have fewer moving parts, and they are quieter, more efficient, and longer lasting.Durable Cabinet with Louvered Condenser Compartment.Our cabinets have a powder painted finish that protects them from the harshest weather extremes. And our louvered condenser compartment is the best in the industry for protecting the condenser coil against yard hazards and weather extremes.Grille/Fan Motor Mount.Our mount helps protect the fan motor from the elements for longer life. Its design dependability helps reduce vibration and noise.Easily Accessible Control Box.Operational controls are 'up front for quick installation and easy service diagnostics.Matched Blower/Evaporator Coil Unit.The blower is responsible for the flow of air into your ductwork. It has been designed to match the MultiFlex® evaporator coil and other system components for maximum efficiency and quiet operation. In addition, the coil features rifled copper tubing and enhanced fins for improved efficiency.Service Fittings.Exterior service fittings enable a serviceman to quickly determine unit operating conditions.Supplemental Electric Heating Strips. These optional electric strips can provide supplemental heating capacity during periods of extreme cold.