Resideo - Honeywell Home ST9103A1002 Furnace Electronic Fan Timer

The Furnace Electronic Fan Timer provides precise control for oil furnaces with reliable combustion control. This low-voltage timer operates on 18-30 VAC at 50/60 Hz and is built to endure challenging environments while delivering consistent fan delay functionality.

Designed for single-circuit systems, this timer is CSA and UL approved for safe integration into residential heating. It handles a wide operating temperature range from -40 to 150 F, enabling dependable performance in garages, basements, or unheated spaces. With a single 1-circuit design, wiring remains straightforward, making retrofit on older systems quick and straightforward.

The timer offers fixed ON delay and adjustable OFF delays, helping optimize furnace start-up and cooling cycles for comfort and efficiency. Its compact construction simplifies installation alongside existing oil furnace controls. User-friendly timing parameters support reliable heat fan cycling, reducing wear on blower motors and improving indoor climate control during cold seasons.

• ON Delay: 45 seconds (Fixed/Heat Fan)
• OFF Delay: 60/90/120/150 seconds (Adjustable/Heat Fan)
• Voltage: 18-30 VAC, 50/60 Hz
• Circuit Count: 1
• Application: Oil furnace
• Approvals: CSA, UL
• Temperature Range: -40 to 150 F