THE RHEEM CLASSIC® 90 GAS FURNACE operates at a minimum of 92% AFUE to provide years of cost savings for all your heating needs. And like other Rheem Classic models, the 90 Plus is available in upflow and downflow/horizontal models for flexible installation options.
COMPREHENSIVE RANGE OF CAPACITIES. The Rheem Classic 90 gas furnace is available in heating capacities of between 45,000 and 120,000 BTUH. Chances are, there's a model to suit your heating needs.
INNOVATIVE FEATURES FOR ADDED RELIABILITY. The Rheem Classic 90 uses a stainless steel secondary heat exchanger that's so reliable, it's backed by a limited 20-year warranty. And this is just the beginning. Each Rheem furnace is designed to provide years of dependable, trouble-free service.