This differential pressure switch is calibrated to specific water column (WC) tolerances required for proper inducer motor verification

Can I use the K146-21 to replace a capacitor with a higher voltage rating

Common indicators include ignition failure

Does this unit come with the fan blade

Aprilaire 110 Media Filter 321894-709 This differential pressure switch isThe Aprilaire 110 Media Filter is a high performance MERV 11 replacement designed specifically for the Aprilaire Model 1110 Whole House Air Purifier. This OEM replacement media utilizes Self Seal Technology to ensure a tight, leak proof fit, effectively eliminating air bypass and forcing all circulating air through the synthetic fiber media. By capturing up to 92% of large airborne particles, this deep pleat filter provides superior protection for