humidifier solenoid
Skip itSoft demand (-89.1% this quarter) — this niche doesn't clear our bar today.
Conversion
Incredible13.3%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$33.37avg listing price — sweet spot $15–$100
Price range
Incredible$20.82–$58.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good592.5avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$116K$116K/yr · 26K searches
Returns
Bad7.6%return rate — above 5% kills the launch gate
Growth
Bad-89.1%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, humidifier solenoid is a $116K/yr Amazon United States market (26K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Nov–Dec. Verdict: Skip it — 32/100.
Data updated Jul 6, 2026 · scored weekly · How we score niches
humidifier solenoid market data
- Units sold / yr
- 3K–4K
- avg 250–500/product
- Revenue / yr
- $100K–$133K
- units × avg price
- Conversion rate
- 13.3%
- Avg BSR
- #216
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 1.4%
- Avg brand age
- 71 months
- Avg seller age
- 197 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 flat
Sellers
15
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- AMI PARTS44%
- Aprilaire39%
- PETOX9%
- Cenipar8%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 74 weeks — -89.1% search growth over the last 90 days.Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 47.3×
Top humidifier solenoid search terms
- aprilaire 4040 solenoid valve8K/yr
- humidifier solenoid4K/yr
- aprilaire solenoid valve5K/yr
- humidifier solenoid valve4K/yr
- aprilaire humidifier solenoid valve2K/yr
- aprilaire 600 solenoid valve2K/yr
Top humidifier solenoid products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS
AMI PARTS$25.384.5★511 rev
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$58.554.6★1,540 rev
4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire
PETOX$28.744.6★153 rev
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$20.824.4★166 rev
Newest
by launch date4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire
PETOX$28.74153 rev
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$20.82166 rev
4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS
AMI PARTS$25.38511 rev
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$58.551,540 rev
Trending
90-day click momentum4040 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$20.824.4★
4040 Humidifier Solenoid Valve Replacement Part by AMI PARTS
AMI PARTS$25.384.5★
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$58.554.6★
4040 Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire
PETOX$28.744.6★
What buyers say about humidifier solenoid
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfectly”
“Well made part”
“Works great”
“My item was exactly what I ordered”
“Works good as water flows better”
“Great Product at a Decent Price”
“Just like new”
“High Quality Materials - Easy to install”
“Yes, the part is made in China, so after about 2 months or so it's working perfectly”
“and works just fine”
What buyers complain about
“this is the second one that broke in less than 3 months of use”
“Quality is very poor - Failed to function after 9 months”
“Part bad out of box”
“I sent the first one back thinking it was bad”
“seemed like it was previously used”
“one of the connecting ends had developed a leak”
Top return reasons
Common questions
- Is humidifier solenoid profitable to sell on Amazon United States?
- The niche generates $116K/yr across 4 tracked products. 90-day search growth is -89.1%. Flapen's verdict: Skip it (32/100).
- How competitive is the humidifier solenoid niche?
- 4 brands and 15 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in humidifier solenoid?
- Top complaints mined from reviews: Durability, Quality-Overall, Defective Material/Parts. The return rate is 7.6% — above our launch gate.
- When does demand for humidifier solenoid peak?
- Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 47.3× the quietest.
- What does it cost to enter the humidifier solenoid niche?
- Listings span $20.82–$58.55; the average listing price is $33.37 (sweet spot $15–$100). The average incumbent carries 593 reviews — the moat a new listing must climb.