or the furnace "clunking" as the solenoid fails to pull in

55 lb motor provides the reliable mechanical output needed to restore factory-spec air circulation in critical heating and cooling applications

The heavyweight construction ensures vibration resistance

000 BTU models (22038 series)

Dual-Speed Versatility: Supports variable airflow requirements through distinct high and low-speed settings for improved humidity control

Utica-Dunkirk 121000020 Thermostat 319852-301 or the furnace "clunking" asThe Utica Dunkirk 121000020 Changeover Thermostat is a critical infrastructure component designed for secondary control within specific hydronic heating and cooling configurations. Engineered for precise temperature based switching, this mechanical changeover control ensures accurate system transitions between heating and cooling modes based on fluid temperature. For technicians servicing legacy or high efficiency boilers and air handlers, the