Configurations
•  Upflow / Horizontal GUH-Series
•  Downflow GDD-Series

Heat Exchanger Design
•  Aluminized steel design primary heat exchanger with crimped no 
    weld construction, AL 29-4C Stainless steel secondary heat exchanger

Burner
•  Aluminized steel inshot burners for smooth ignition

Cabinet Design
•  Compact 33” height with Standardized widths for easy coil fit 

Air Delivery System
•  Multi-speed high efficiency (constant torque) blower motor
 

Controls
•  Single Stage Gas Valve
•  Durable silicon nitride ignitor
•  Self diagnostics saves last 5 fault codes regardless of power interruption
•  Control features electronic air cleaner and humidifier terminals

Venting
•  Designed certified for direct (2-pipe) and non direct (1-pipe) applications