Aprilaire Circuit Board & Timer Parts

Make Selection Here:

Product Type

  • Humidifier


  • Aprilaire

Part Category

  • Circuit Board & Timer

Common Problems

Main Control Board

RepairClinic Item # 820864

Grid is 1 inch square
Main Control Board - Part # 820864 Mfg Part # 4238

Circuit board assembly

Manufacturer Number 4238


Order now and choose FedEx 2Day or FedEx Overnight shipping and this item will ship out tomorrow

Add to Cart

365 Day Return Policy