Precise Thermal Response: Factory-calibrated to trip between 170°F and 200°F to prevent system overheating

making it a staple for HVAC professionals seeking longevity and quiet operation

eliminating the mechanical wear points found in legacy models

the unit typically needs to be replaced to restore power to the system

it integrates seamlessly into existing boiler tapings

Aprilaire 4974 Drain Hose 322838-754 Precise Thermal Response: Factory-calibrated toThe Aprilaire 4974 Drain Hose is a critical component for maintaining your HVAC system, specifically designed for Aprilaire humidifiers and dehumidifiers. This 10 foot drain hose kit features a high grade, flexible condensate drain line made from non corrosive polymers to ensure long term durability and resistance to kinking. Precise water management is essential for preventing structural damage, and the Aprilaire 4974 effectively directs moisture