---
title: "humidifier solenoid — Niche Verdict: Skip it (35/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/appliances/humidifier-solenoid"
last_updated: "2026-07-10T02:27:54.885Z"
locale: en
meta:
  description: "a concentrated shelf (top 5 take 89% of clicks) — humidifier solenoid doesn't clear our bar today."
  "og:description": "a concentrated shelf (top 5 take 89% of clicks) — humidifier solenoid doesn't clear our bar today."
  "og:title": "humidifier solenoid — Niche Verdict: Skip it (35/100) | Amazon United States - Flapen"
---

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# **humidifier solenoid**

**Skip it****35/100 **

a concentrated shelf (top 5 take 89% of clicks) — humidifier solenoid doesn't clear our bar today.

**Market/yr**

**$99K**

**Growth (1y)**

**+263.4%**

**Products**

**7**

**Brands**

**5**

was 4 a year ago

**Sellers**

**15**

**Price range**

**$20.40–$58.55**

**Returns**

**6.9%**

**Rating**

**4.5★**

**Skip it**

Scored 35/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**5**

 ×0.30

Growth

**83**

 ×0.30

Competition

**2**

 ×0.20

Quality gap

**41**

 ×0.10

Returns

**41**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 69 weeks — +263.4% year over year.

2K919Prime Day '25Spike '25Black Friday '25Holiday '25Spike '26Mar '25May '25Aug '25Oct '25Jan '26Mar '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 69.1×

## **Competition**

- AMI PARTS33% - Aprilaire29% - TOMOON19% - PETOX11% - Cenipar8%

The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack. 5 brands and 15 sellers compete here.

**Brands**

**5 **▲rising

was 4 a year ago

**Sellers**

**15**

**Top 5 brand share**

**100%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS 24V Brass Made Humidifier Solenoid Valve Replaces Models 400 500 600 700 600M 558 550A 550 568 560A 560 700 700M 768 760A 760](https://m.media-amazon.com/images/I/41B6RwToSeL.jpg) [**4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS 24V Brass Made Humidifier Solenoid Valve Replaces Models 400 500 600 700 600M 558 550A 550 568 560A 560 700 700M 768 760A 760**](https://www.amazon.com/dp/B07XLLXQHN)

AMI PARTS$25.394.5★50733%▲rising

2
![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](https://m.media-amazon.com/images/I/31oY3p92HmL.jpg) [**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**](https://www.amazon.com/dp/B00NVPTWXM)

Aprilaire$58.554.6★1,53729%▼falling

3
![Humidifier Water Solenoid Valve 4040 10006735 for Aprilaire Whole House Humidifier 400 400M 500 500M 600 600M 558 550A 550 568 560A 700M 768 760A 760 | 24 Volts | 2.3 Watts | 60 HZ-Yellow by TOMOON](https://m.media-amazon.com/images/I/41KpHnAWC5L.jpg) [**Humidifier Water Solenoid Valve 4040 10006735 for Aprilaire Whole House Humidifier 400 400M 500 500M 600 600M 558 550A 550 568 560A 700M 768 760A 760 | 24 Volts | 2.3 Watts | 60 HZ-Yellow by TOMOON**](https://www.amazon.com/dp/B08MTN9MBP)

TOMOON$28.794.5★28111%▲rising

4
![4040 Humidifier Water Solenoid Valve 24 Volts Humidifier Solenoid Valve Fit for Aprilaire Humidifier 240 400 500 600 700 B2015-S85 B2017-S85 etc by Cenipar](https://m.media-amazon.com/images/I/41YGZNkl8iL.jpg) [**4040 Humidifier Water Solenoid Valve 24 Volts Humidifier Solenoid Valve Fit for Aprilaire Humidifier 240 400 500 600 700 B2015-S85 B2017-S85 etc by Cenipar**](https://www.amazon.com/dp/B08MZNNYJQ)

Cenipar$20.774.4★1668%▲rising

5
![Humidifier Water Solenoid Valve 4040 Exact for Aprilaire Valve 400 500 600 700 220 224 Part#B2015-S85 B2017-S85 | 24 Volts | 2.3 Watts | 60 HZ-Blue by TOMOON](https://m.media-amazon.com/images/I/41WWd3T7nUL.jpg) [**Humidifier Water Solenoid Valve 4040 Exact for Aprilaire Valve 400 500 600 700 220 224 Part#B2015-S85 B2017-S85 | 24 Volts | 2.3 Watts | 60 HZ-Blue by TOMOON**](https://www.amazon.com/dp/B08MTD9TBZ)

TOMOON$21.534.4★3728%▲rising

6
![4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire Whole House Model 400 550 558 600M 600 700 700M 768 760A Replaces B2035-S2 B2035-S5 B2035-S54-24V 2.3W 60 HZ Yellow](https://m.media-amazon.com/images/I/410eVIucSNL.jpg) [**4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire Whole House Model 400 550 558 600M 600 700 700M 768 760A Replaces B2035-S2 B2035-S5 B2035-S54-24V 2.3W 60 HZ Yellow**](https://www.amazon.com/dp/B0CJLGCFFJ)

PETOX$28.744.6★1498%▼falling

7
![PETOX 4040 Humidifier Water Solenoid Valve Compatible with Aprilaire Humidifiers Valve 400 500 600 700 220 224 - Replacement Part# B2015-S85-24 Volts AC 2.3 Watts 60 Hz 125 PSI- Blue](https://m.media-amazon.com/images/I/41zpYtRoXgL.jpg) [**PETOX 4040 Humidifier Water Solenoid Valve Compatible with Aprilaire Humidifiers Valve 400 500 600 700 220 224 - Replacement Part# B2015-S85-24 Volts AC 2.3 Watts 60 Hz 125 PSI- Blue**](https://www.amazon.com/dp/B09KGG9BMY)

PETOX$20.404.4★644%▼falling

## **Product shelf**

All 7 tracked products in this niche.

Top sellersNewestTrending

[![4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS 24V Brass Made Humidifier Solenoid Valve Replaces Models 400 500 600 700 600M 558 550A 550 568 560A 560 700 700M 768 760A 760](https://m.media-amazon.com/images/I/41B6RwToSeL.jpg)**4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS 24V Brass Made Humidifier Solenoid Valve Replaces Models 400 500 600 700 600M 558 550A 550 568 560A 560 700 700M 768 760A 760** AMI PARTS**$25.39**4.5★507 reviews](https://www.amazon.com/dp/B07XLLXQHN) [![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](https://m.media-amazon.com/images/I/31oY3p92HmL.jpg)**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** Aprilaire**$58.55**4.6★1,537 reviews](https://www.amazon.com/dp/B00NVPTWXM) [![Humidifier Water Solenoid Valve 4040 10006735 for Aprilaire Whole House Humidifier 400 400M 500 500M 600 600M 558 550A 550 568 560A 700M 768 760A 760 | 24 Volts | 2.3 Watts | 60 HZ-Yellow by TOMOON](https://m.media-amazon.com/images/I/41KpHnAWC5L.jpg)**Humidifier Water Solenoid Valve 4040 10006735 for Aprilaire Whole House Humidifier 400 400M 500 500M 600 600M 558 550A 550 568 560A 700M 768 760A 760 | 24 Volts | 2.3 Watts | 60 HZ-Yellow by TOMOON** TOMOON**$28.79**4.5★281 reviews](https://www.amazon.com/dp/B08MTN9MBP) [![4040 Humidifier Water Solenoid Valve 24 Volts Humidifier Solenoid Valve Fit for Aprilaire Humidifier 240 400 500 600 700 B2015-S85 B2017-S85 etc by Cenipar](https://m.media-amazon.com/images/I/41YGZNkl8iL.jpg)**4040 Humidifier Water Solenoid Valve 24 Volts Humidifier Solenoid Valve Fit for Aprilaire Humidifier 240 400 500 600 700 B2015-S85 B2017-S85 etc by Cenipar** Cenipar**$20.77**4.4★166 reviews](https://www.amazon.com/dp/B08MZNNYJQ) [![Humidifier Water Solenoid Valve 4040 Exact for Aprilaire Valve 400 500 600 700 220 224 Part#B2015-S85 B2017-S85 | 24 Volts | 2.3 Watts | 60 HZ-Blue by TOMOON](https://m.media-amazon.com/images/I/41WWd3T7nUL.jpg)**Humidifier Water Solenoid Valve 4040 Exact for Aprilaire Valve 400 500 600 700 220 224 Part#B2015-S85 B2017-S85 | 24 Volts | 2.3 Watts | 60 HZ-Blue by TOMOON** TOMOON**$21.53**4.4★372 reviews](https://www.amazon.com/dp/B08MTD9TBZ) [![4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire Whole House Model 400 550 558 600M 600 700 700M 768 760A Replaces B2035-S2 B2035-S5 B2035-S54-24V 2.3W 60 HZ Yellow](https://m.media-amazon.com/images/I/410eVIucSNL.jpg)**4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire Whole House Model 400 550 558 600M 600 700 700M 768 760A Replaces B2035-S2 B2035-S5 B2035-S54-24V 2.3W 60 HZ Yellow** PETOX**$28.74**4.6★149 reviews](https://www.amazon.com/dp/B0CJLGCFFJ) [![PETOX 4040 Humidifier Water Solenoid Valve Compatible with Aprilaire Humidifiers Valve 400 500 600 700 220 224 - Replacement Part# B2015-S85-24 Volts AC 2.3 Watts 60 Hz 125 PSI- Blue](https://m.media-amazon.com/images/I/41zpYtRoXgL.jpg)**PETOX 4040 Humidifier Water Solenoid Valve Compatible with Aprilaire Humidifiers Valve 400 500 600 700 220 224 - Replacement Part# B2015-S85-24 Volts AC 2.3 Watts 60 Hz 125 PSI- Blue** PETOX**$20.40**4.4★64 reviews](https://www.amazon.com/dp/B09KGG9BMY)

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**20%

*“Direct fit”*

**Advertised Vs Actual Product**16%

*“As advertised”*

**Quality-Overall**13%

*“Great Product”*

**Efficiency**10%

*“Works great”*

**Value For Money**8%

*“Great value”*

**Product Condition**6%

*“Just like new”*

**Spray/Flow**6%

*“Works good as water flows better”*

**Functionality-Overall**4%

*“and works just fine”*

**Durability**3%

*“Has been running for a week now with no issues”*

**Material Quality**3%

*“High Quality Materials - Easy to install”*

### **What buyers complain about **

**Durability**27%

*“Failed within a month”*

**Quality-Overall**13%

*“Quality is very poor - Failed to function after 9 months”*

**Functionality-Overall**13%

*“Did not work after installed”*

**Defective Material/Parts**13%

*“Part bad out of box”*

**Water Resistance**5%

*“Water valve stuck open”*

**Filtration**5%

*“You will need to buy the water filter/limiter seperate”*

**Product Condition**5%

*“seemed like it was previously used”*

**Leak-Proof**5%

*“one of the connecting ends had developed a leak”*

**Assembly/Installation**3%

*“Did not work after installed”*

**Advertised Vs Actual Product**3%

*“The photo of the item on the website looked different from one they sending out now even though it is the same company, model, and serial number”*

#### **Top return reasons**- Size-Overall19% - Functionality-Overall18% - Defective Material/Parts16% - Compatibility-Overall13% - Advertised Vs Actual Product9% - Product Condition5% - Value For Money3% - Durability3% - Leak-Proof3% - Maintenance And Repair3%