Rheem Classic Series 90 Plus with Dual Comfort Control 2-Stage Upflow Gas Furnace - 95% A.F.U.E or aboveThe Rheem Classic Series with Dual Comfort Control two-stage gas furnace features a new two-stage gas valve that delivers fuel to the burner at 1 of 2 rates to maintain the desired temperature. On the coldest days, the furnace will operate at 100-percent capacity. On other days, the furnace operates at 70-percent capacity to help reduce energy bills. This means that now you can have the best of both worlds. Economical light-duty heating on cool days, and real heavy-duty heating power on the coldest nights. All that, and the energy savings of a 90-percent gas furnace make the Rheem Classic Series with Dual Comfort Control a perfect choice.
