Armstrong 84L00 Furnace Fan and Limit Control

Armstrong 84L00 Furnace Fan and Limit Control delivers dependable safety and performance for residential furnaces. This furnace fan and limit control unit is designed to monitor essential furnace conditions, automatically starting the blower and cutting off power as needed. In brown, it blends with traditional equipment while staying rugged and durable.

Designed to be used on furnaces, this Armstrong control provides reliable fan cycling and limit protection—critical elements of a dependable furnace control. It helps regulate air flow, prevent overheating, and maintain consistent heating cycles. Compatible with standard furnace configurations, the brown finish helps it blend with many furnace housings while delivering long-lasting performance in busy utility rooms.

Key features include:

• Application: Used On Furnace
• Function: Automatic blower activation and safe shutoff via fan and limit control
• Protection: Overheat and fault monitoring for safer operation
• Durability: Rugged construction designed for frequent cycling