• Aprilaire 4040 Replacement Humidifier Solenoid

      Replacement 24 Volt Water Valve for AprilaireModels 220, 224, 400, 440, 500, 550, 558,560, 568, 600, 700, 760, & 768. New in box, includes 2 screws. $27.0
    • 4040 Solenoid Valve for Aprilaire Humidifiers 24V 1/4"

      I replaced my old 4040 with this thinking it was the problem. So this works fine, used 2 minutes. $30.5
    • 4040 Solenoid Valve for Aprilaire Humidifiers 24V 1/4"

      Used for 2 years. I thought this was bad, but after replacing with a new one this one actually fine. $28.5
    • OEM 4040 AP-4040 Aprilaire Humidifier Water Solenoid Valve A2012-S118 24/60 VAC

      This is a BRAND NEW OEM 24 Volt Aprilaire Humidifier Water Solenoid Valve. Aprilaire part # 4040 (or AP-4040) and the Valve # is A2012-S118. The #4040 soleniod valve includes a new inline strainer (pre-inserted in inlet side of valve), and a compression nut & washer for the inlet side only. Thanks for looking and good luck! Visit our eBay Store ...  More $55.85
    • Universal Aprilaire General Humidifier Water Solenoid Valve 4040 AP-4040 990-53

      This is a BRAND NEW Universal 24 Volt Humidifier Water Solenoid Valve. It Replaces Aprilaire part # 4040 (or AP-4040 and General part # 990-53. Thanks for looking and good luck! Visit our eBay Store: NorthAmericaHVAC This Item is used in Aprilaire Humidifier Models: 20, 224, 400, 440, 500, 550, 558, 560, 568, 600, 700, 760, 768 On Mar-28-12 at 18:0 ...  More $49.99
    • Aprilaire / Generalaire 4040 Humidifier Solenoid Valve

      Aprilaire / Generalaire 4040 Humidifier Solenoid Valve Product Description Aprilaire part numbers 4040, 4040-RR, 4040RR Fits Aprilaire models 110, 112, 220, 224, 440, 550, 550A, 550-A,558, 560, 560A, 560-A, 568, 600, 760, 760A, 760-A, 768, 700. Fits Some 350, 360 Models That Use 24/60 Volt Solenoid Valves. If it uses a 12 Volt Solenoid, then this v ...  More $34.65
    • Aprilaire 4040 Generalaire Humidifier 24v Water Solenoid Valve- 3 Pack

      $95.56
    • 4040 SOLENOID

      $40.0
    • Furnace Humidifier Solenoid Valve General Aprilaire 4040 Replacement Valve

      $34.65
    • 4040 Solenoid Valve for Aprilaire Humidifiers 24V 1/4"

      $31.95