Carrier KH03HL005 Air Filter 326070-701 this low voltage relay ensures

this low voltage relay ensures the control circuit maintains stable communication between the thermostat and the high-voltage blower motor

Is this compatible with horizontal furnace installations

For contractors servicing industrial or large-scale commercial hydronic plants

Key Benefits Eliminates Nuisance Trips: Bypasses the low-pressure switch for 180 seconds to allow for pressure equalization in cold environments

it is most commonly used as a stand-alone mechanical ventilation solution for standard split systems or packaged units

Carrier KH03HL005 Air Filter 326070-701 this low voltage relay ensuresThe Carrier KH03HL005 is a high performance 20x25x2 air filter engineered specifically for commercial and industrial HVAC applications. This Factory Authorized Part features a robust aluminum mesh construction, offering a permanent, washable alternative to standard disposable media. With a nominal depth of 2 inches (actual depth 1 3 4 inches), it fits precision Carrier filter tracks without requiring frame modifications. Unlike standard 1 inch