If the noise originates from a cracked or loose housing rather than the motor bearings

It is primarily used as an indoor air or coil sensor to monitor discharge temperatures in commercial air handlers and heat pump systems

The rugged housing is built for the rigors of mechanical rooms and warehouses

Standardized Integration: Compatible with 120V electrical systems

High Overpressure Protection: Rated for up to 525 psig to withstand system pressure spikes

Aprilaire 5558 Humidistat 326070-701 If the noise originates fromThe Aprilaire 5558 is a high performance Automatic Digital Modulating Control package engineered specifically for use with the Model 866 modulating steam humidifier. This modulating steam humidistat provides superior precision by utilizing a microcomputer based design and a proportional algorithm. Unlike standard on off controls, the 5558 delivers a 0 10VDC or 2 10VDC modulating output signal, allowing the humidifier to adjust its output based on the