RGFD Series Prestige Series with Contour Comfort Control Upflow Gas Furnace The industry's only truly modulating gas furnace. Warranty: Limited-Lifetime Heat Exchanger Warranty All Other Parts 5 Years Gas Efficiency: 90% Features • Heat exchanger is constructed of all stainless steel for maximum corrosion resistance and thermal fatigue reliability. • Modulating Function: when used with a modulating thermostat, modulation rate between 40% and 100% of total capacity. • Two-stage Function: when used with a two-stage thermostat, furnace operates at 40% on first stage, and stages up to 65%, then 100% for second stage. • Multistage Function: when used with a single-stage thermostat, furnace functions as a three stage furnace operating at 40%, 65% and 100% of total capacity.

Prepare for those unexpected power outages!