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AprilAire 4040 Solenoid Valve, 24 Volt for AprilAire Whole House Humidifier Models 400, 400M, 500, 500M, 600, 600M, 558, 550A, 550, 568, 560A, 560, 700, 700M, 768, 760A, 760, 0.5 ounces

4.7 4.7 out of 5 stars 1,440 ratings

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Purchase options and add-ons

Material Metal
Brand Aprilaire
Item Dimensions LxWxH 1.8 x 2.75 x 1.95 inches
Inlet Connection Type Compression

About this item

  • This genuine AprilAire humidifier replacement part was designed to optimize the performance of your AprilAire Whole House Humidifier Model: 400, 400M, 500, 500M, 600, 600M, 558, 550A, 550, 568, 560A, 560, 700, 700M, 768, 760A, 760.
  • It includes the In-Line Strainer, Compression Sleeve, and Compression nut needed for install.
  • The AprilAire 4040 Solenoid Valve controls the amount of water that enters your AprilAire Whole House Humidifier, ensuring that the right amount of humidity is delivered throughout your home
  • The 4040 Solenoid Valve is part of the core of your AprilAire Whole House Humidifier, making it possible to maintain proper humidity levels throughout your home
  • Compatible with AprilAire Whole House Humidifier Model: 400, 400M, 500, 500M, 600, 600M, 558, 550A, 550, 568, 560A, 560, 700, 700M, 768, 760A, 760

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1.8 x 2.75 x 1.95 inches; 4.8 ounces
  • Item model number ‏ : ‎ 4040
  • Date First Available ‏ : ‎ June 21, 2012
  • Manufacturer ‏ : ‎ Research Products Corporation
  • ASIN ‏ : ‎ B00NVPTWXM
  • Customer Reviews:
    4.7 4.7 out of 5 stars 1,440 ratings

Product Description

Proper humidification of your home is important for protecting your family’s health and the beauty of your home. The AprilAire 4040 Solenoid Valve controls the amount of water that enters your AprilAire Whole House Humidifier, ensuring that the right amount of humidity is delivered into the air every time it turns on. The 4040 Solenoid Valve is part of the core of your AprilAire Whole House Humidifier, making it possible for you to adjust moisture levels with precision and accuracy.

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Top Brand: Aprilaire

Highly Rated
4.7/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

From the manufacturer

image

AprilAire is Healthy Air

AprilAire is on a mission to make homes healthy. We believe everyone deserves Healthy Air and envision a future with Healthy Air in every home. We value healthy living, customer inspired innovation, simplicity of design, straight talk and delivering real results as promised, and most importantly making a positive difference in the lives of our customers, families, and communities. Headquartered in Madison, Wisconsin since 1954, AprilAire has been creating and delivering Healthy Air solutions to manage air purity, humidity, fresh air supply, radon mitigation, and temperature for all types of homes, in all environments. We have an unparalleled reputation as the brand of choice among tens of thousands of professional contractors and make a Healthy Air difference in the lives of the millions of families who rely on our products every day.

What's in the box

  • 4040 Solenoid Valve, 4004 Inline Strainer, Compression Sleeve, Compression Nut
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    1,440 global ratings

    Customers say

    Customers like the performance, ease of installation, and value of the valve. For example, they mention it works fine, is easy to install, and is a good value for a genuine ApriLaire part. Customers are also happy with ease of replacement, and fit. That said, opinions are mixed on quality and leakage.

    AI-generated from the text of customer reviews

    125 customers mention115 positive10 negative

    Customers are satisfied with the performance of the valve. They mention that it works fine and has OEM quality, so it has no problems at all. However, some customers find the pricey for what it is.

    "After wiring it in, the solenoid worked like a champ." Read more

    "...Works fine. Excellent value." Read more

    "Installation was straight forward and it works. Now it's a waiting game to see how long this valve lasts...." Read more

    "...Fits perfectly and performs as it is supposed to. Note that it is not necessary to purchase the black in line strainer as a separate item...." Read more

    83 customers mention83 positive0 negative

    Customers find the installation process of the valve to be easy. They mention that the instructions are clear and easy to follow. Some say that the product is a good product with illustrations.

    "Installation was straight forward and it works. Now it's a waiting game to see how long this valve lasts...." Read more

    "Good product with instructions with illustrations" Read more

    "Easy installation and works great" Read more

    "...After 6 months it has worked fine. Easy was to install. It is a great value for the money." Read more

    34 customers mention30 positive4 negative

    Customers like the value of the valve. They mention that it is easy to install and a good price for a genuine APRILAIRE part. Customers also say that it saves a lot on a plumber bill and is a cost-effective replacement for solenoid valve failure.

    "...Works fine. Excellent value." Read more

    "...Easy was to install. It is a great value for the money." Read more

    "Good product, great value, and quality. Saved us from a large repair bill!" Read more

    "I think almost anyone could install one of these and save a lot on a plumber bill. You need two wrenches. A crescent wrench will do...." Read more

    32 customers mention32 positive0 negative

    Customers find the valve easy to replace. They mention that it is simple to install, easy to swap out, and works well as a replacement. Some say that the units are good and easy to fix and maintain, and that it was easy to remove the bad solenoid and replace it with this model.

    "...replaced the Solenoid and it fixed the problem Easy to replace: turn off water, turn off power, Loosen the two water line nuts, remove two wire..." Read more

    "...Happy Aprilaire units are so good and easy to fix and maintain." Read more

    "...Thanks to Amazon and some helpful videos on YouTube, this was an easy repair and took me about 15 minutes...." Read more

    "Nearly identical to the original humidifier solenoid. Easy to swap out with just a wrench and screwdriver." Read more

    18 customers mention18 positive0 negative

    Customers are satisfied with the fit of the valve. They mention that it fits perfectly, is a good price, and is perfect for their Aprilaire 760.

    "This was a replacement part for an Aprilaire model 700 humidifier. Fits perfectly and performs as it is supposed to...." Read more

    "...Swapped in this one and everything is working again. Fits great, no leaks. comes with the tiny filter to keep junk out." Read more

    "Fits perfectly" Read more

    "Perfect for for Aprilaire 760. No issues installing. Just remember to cut the copper pipe to install the new nut and ferrule." Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the quick delivery of the valve. They mention that it fits great and is easy to install.

    "Very quick delivery. Easily installed." Read more

    "...After replacing water is flowing again. Fast delivery and easy to replace for my April Air 700. Just need a 1/2 inch and a 7/16 wrenches...." Read more

    "Product delivery was timely, great selection of parts and pictures of them, great inventory and price" Read more

    "Awesome works great and fast delivery" Read more

    35 customers mention21 positive14 negative

    Customers are mixed about the quality of the valve. Some mention that it's a quality product, well-built, and works great, while others say that it failed after a year, was faulty, and was defective out of the box.

    "Good product, great value, and quality. Saved us from a large repair bill!" Read more

    "...PS: My old valve was stuck open...." Read more

    "OEM quality, no problems at all, kind of pricey for what it is" Read more

    "...have to go through this again in about 3 or 4 years as the solenoid's don't last longer than that according to what I have read...." Read more

    32 customers mention14 positive18 negative

    Customers are mixed about the leakage of the valve. Some mention that it works as expected and no more water leaks, while others say that the water won't trickle or anything, and that the orifice is leaking.

    "Humidify was not flowing water...." Read more

    "...Swapped in this one and everything is working again. Fits great, no leaks. comes with the tiny filter to keep junk out." Read more

    "...Without this orifice the water flow to the humidifier is excessive and can spill out on the basement floor...." Read more

    "...Now things worked as they should and no more water leak. A much cheaper fix than calling a serviceman." Read more

    Excellent maintenance products for Aprilaire 600 humidifier
    5 Stars
    Excellent maintenance products for Aprilaire 600 humidifier
    This was my first 3 star review headlined "Should not sell this without proper orifice - danger of flooding in basement"As some other users have noted this item ships without the proper orifice. On my Aprilaire 600 this is called the "yellow orifice". See above picture from the manual. Without this orifice the water flow to the humidifier is excessive and can spill out on the basement floor. I had to order this part separately for about $7. Less critically, the shipped item also lacked a strainer (see above picture) that slows down inevitable future clogging of the solenoid valve.Reason for upgrading to 5 star headlined "Excellent maintenance products for Aprilaire 600 humidifier"I had ordered, and just received, the Humidifier Maintenance Kit (Aprilaire 4839) for my humidifier. It came with the yellow orifice preinstalled in the plastic pipe that runs from the solenoid valve to the humidifier. I also found that the strainer valve came preinstalled in the input end of the solenoid valve (Aprilaire 4040) - I had not noticed this earlier.Everything works fine now. Going forward I plan on replacing these two parts routinely as they do tend to clog up. It is easy to check as I can hear the water flow near the valve when it is working fine.
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    Top reviews from other countries

    Amazon Customer
    5.0 out of 5 stars This valve is the original I was needed.
    Reviewed in Canada on January 16, 2022
    Roamin Rusty
    5.0 out of 5 stars Worked perfectly!
    Reviewed in Canada on January 29, 2020
    Amazon Customer
    5.0 out of 5 stars Works as expected.
    Reviewed in Canada on January 29, 2022
    A.F.
    4.0 out of 5 stars Works well but a little expensive
    Reviewed in Canada on April 6, 2019
    Dakota
    5.0 out of 5 stars Original Vallve
    Reviewed in Canada on January 29, 2022