SKU: 55924540268

4040 Humidifier Solenoid Valve 24V Water Valve

Sale price$35.41 Regular price$39.35
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

4040 Humidifier Solenoid Valve 24V Water Valve4040 Humidifier Solenoid Valve 24V Water Valve Key Features Controls water flow for whole house humidifiers Operating Voltage: 24V AC Includes in line strainer, compression sleeve, and nut Replaces Cross Reference Part Numbers AprilAire: 4040 Ranco: 4040 001 Compatibility & Fitment Designed for AprilAire Whole House Humidifiers. Compatible Models: 220, 224, 400, 400M, 440, 448, 500, 500M, 550, 550A, 558, 560, 600, 600M, 700 When to Replace Humidifier

4040 Humidifier Solenoid Valve 24V Water Valve

Key Features

  • Controls water flow for whole-house humidifiers
  • Operating Voltage: 24V AC
  • Includes in-line strainer, compression sleeve, and nut

Replaces / Cross-Reference Part Numbers

  • AprilAire: 4040
  • Ranco: 4040-001

Compatibility & Fitment

  • Designed for AprilAire Whole-House Humidifiers.
  • Compatible Models: 220, 224, 400, 400M, 440, 448, 500, 500M, 550, 550A, 558, 560, 600, 600M, 700

When to Replace

  • Humidifier does not receive water when operating.
  • Water flow is weak, inconsistent, or stops completely during a cycle.
  • Inability to maintain set humidity levels.
  • Visible water leaks, drips, or corrosion on the existing valve body.
  • Valve makes a buzzing noise but does not open to allow water flow.

Installation Tips

  • Before installation, shut off the water supply and disconnect power to the furnace and humidifier.
  • Note the water flow direction indicated on the original valve body and install the new valve in the same orientation.
  • Use two wrenches during removal and installation to avoid twisting or damaging water lines.
  • Ensure the included strainer is correctly seated to prevent debris from clogging the valve.
  • After installation, slowly turn the water supply on and check all connections for leaks before restoring power.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55924540268

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4.8 ★★★★★
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A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 4
Great Starter
The car is starting great now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
K
Verified Purchase
Kindle Customer
Waukegan, US
★★★★★ 5
Good fit works great.
Style: FJ5T11000AA
This fit my Ford perfectly at a fair price.
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Reviewed in the United States on May 9, 2026
J
Verified Purchase
Jamie
Dallas, US
★★★★★ 1
Do not buy this junk
Ordered on January 31 installed it on March 19. I’ve started my sick times with it since and now dead absolute junk. I would highly recommend staying away from this.
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Reviewed in the United States on May 10, 2026
R
Verified Purchase
Raquel Santos
Charlottesville, US
★★★★★ 5
Great item
Size: 2.0L
This fit my car perfectly! It was was easy to install as well. Great price as well.
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Reviewed in the United States on March 25, 2026
J
Verified Purchase
Julie
San Leandro, US
★★★★★ 5
Easy to install and great quality—perfect for my 2018 Civic
Size: 2.0L
I bought this for my 2018 Honda Civic, and it fits perfectly. It only takes a few minutes to install with just a few clips, and the process is simple. I am a woman and do it myself with no issues at all. The filter feels sturdy and well made. The thickness and overall quality are excellent. I’ve seen people mention “ease of cleaning,” but I don’t clean mine. I just remove, vacuum the area and replace it when needed. That might be a bit much, but it’s affordable and straightforward. I can’t say exactly how much it improves airflow or fuel mileage, but I consistently get over 40 miles per gallon in economy mode, so it’s clearly performing well. Overall, it’s a great product if you like handling basic car maintenance on your own.
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Reviewed in the United States on May 11, 2025

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