The Carrier Performance Boost 90 is a single-stage gas furnace. It has an efficiency rating of up to 96.5% AFUE and select models are Energy Star qualified. The unit is designed for upflow, downflow and horizontal installation. It has a multi-speed ECM blower motor which provides enhanced comfort, and a fully insulated cabinet helps reduce sound levels. It features an aluminized steel, clamshell-style primary heat exchanger and a stainless steel, fin-and-tube design secondary heat exchanger. The Performance Boost 90 features Ideal Humidity System technology, which improves humidification from an air conditioner or heat pump. The Performance Boost 90 is part of Carrier's Performance furnace line.
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