The SmartComfortâ„¢ VS 90 variable-speed, two-stage furnace has been redesigned for easier installation and serviceability. The furnaces come prepared for upflow installations, with parts included for horizontal or downflow conversion. It features an already-installed internal trap; a troubleshooting LED fault indicator; a modified control board mounting plate for easier access for servicing; improved condensate trap drainage capacity; a high-efficiency, variable-speed blower; stainless steel primary and secondary heat exchangers; two-stage gas valve; and two-stage fan timer.
Tempstar, International Comfort Products, P.O. Box 128, Lewisburg, TN 37091; 931-270-4222; 931-270-4166 (fax); www.tempstar.com.