---
title: "Aquastat — $100K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/aquastat"
last_updated: "2026-08-08T15:54:59.326Z"
locale: en
meta:
description: "Niche score 35/100 · $100K/yr market · 29K searches/yr · $156.68 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · $100K/yr market · 29K searches/yr · $156.68 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Aquastat — $100K/yr Amazon US Niche (2026) - Flapen"
---
# **aquastat**
**Skip it**
Soft demand (-65.2% this quarter) — this niche doesn't clear our bar today.
Market size 25Growth 0Conversion 27Competition 59Returns 38Price range 23Avg price 56Brand share 20Review moat 96Quality gap 55
**Review moat**
**Incredible****80.43**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Good****$156.68**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Okay****3.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Okay****2.2%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$100K**
$100K/yr · 29K searches
**Price range**
**Bad****$19.44–$375.18**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Bad****92%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-65.2%**
90-day search growth — must beat 0% to launch
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, aquastat is a $100K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 35/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **aquastat market data**
- **Units sold / yr**
- **250–500**
- avg 0–100/product
- **Revenue / yr**
- **$39K–$78K**
- units × avg price
- **Conversion rate**
- **2.2%**
- **Avg BSR**
- **#4,148**
- **Page quality**
- **0%**
- **Prime**
- **71%**
- **Sponsored**
- **52%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **64 months**
- **Avg seller age**
- **155 days**
## **Competition & brand share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**9 **▲rising
**Sellers**
**103**
**Top-5 brand share**
**92%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 100%
**Open market**
**6%**
- Honeywell56% - G&W17% - Grundfos13% - ZILLSEA3% - ecoartheating3% - RESIDEO2% - Open — no brand owns it (3 brands, 6%)
## **Demand**
Weekly Amazon search volume, last 34 weeks — -65.2% search growth over the last 90 days.
1K800Spike '26Prime Day '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jul '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/aquastat/trend)
## **Top aquastat search terms**
- **aquastat**12K/yr-48.8%1.6% conv. - **aquastat for boiler**12K/yr-78.6%0.4% conv. - **honeywell aquastat**5K/yr-68.7%2.0% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/aquastat/search-terms)
## **Top aquastat 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.
0%5%$5K10%$10K15%$15K20%$20K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rainbow Aquastat Temperature Controller 32-194F SPDT Contact for Water Heater/Boiler/Fan/Pump Control with Thermowell Included Used for Heating or Cooling**G&W**$83.25**5.0★7 rev](https://www.amazon.com/dp/B0FCW4BGJL) [2**Honeywell L6006C1018 Aquastat Controller**Honeywell**$157.84**4.7★117 rev](https://www.amazon.com/dp/B0006UPLAS) [3**L8148E1265 AQUASTAT RELAY-LOW VOLT BURNER CIRC**Honeywell**$321.09**4.4★197 rev](https://www.amazon.com/dp/B0009726K6) [4**Honeywell L4080B1352 High Limit AquStat 1 x 1 x 1**Honeywell**$87.67**4.3★52 rev](https://www.amazon.com/dp/B008LE5MM8) [5**Grundfos 595444-3/4 Clip-on Aquastat Kit for UP Series Circulators 85-105F**Grundfos**$58.91**4.3★83 rev](https://www.amazon.com/dp/B0029P2WY6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ZILLSEA Digital Temperature Controller Heating & Cooling Thermostat Plug Outlet 40F~210F 15A 1800W LCD Display Temperature Controlled Outlet for Homebrew Greenhouse Incubator**ZILLSEA**$19.44**110 rev10mo ago](https://www.amazon.com/dp/B0FFGNQYZW) [**Rainbow Aquastat Temperature Controller 32-194F SPDT Contact for Water Heater/Boiler/Fan/Pump Control with Thermowell Included Used for Heating or Cooling**G&W**$83.25**7 rev1y ago](https://www.amazon.com/dp/B0FCW4BGJL) [**W1609-101 Refrigeration Thermostat Control with Remote Bulb 5 Ft Capillary**yeeluzan**$35.01**9 rev1y ago](https://www.amazon.com/dp/B0F7XRPGS8) [**Plug in Thermostat Temperature Controller Heavy Duty Digital Thermostat Outlet Plug Heating Cooling Mode Countdown Timer**ecoartheating**$23.17**580 rev6y ago](https://www.amazon.com/dp/B083FJ7GKR) [**H1ywell Home Aquastat Relay L8148a1017**Honeywell**$258.79**12 rev6y ago](https://www.amazon.com/dp/B082MQBMPS)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ZILLSEA Digital Temperature Controller Heating & Cooling Thermostat Plug Outlet 40F~210F 15A 1800W LCD Display Temperature Controlled Outlet for Homebrew Greenhouse Incubator**ZILLSEA**$19.44**4.4★**▲ 390%**](https://www.amazon.com/dp/B0FFGNQYZW) [**W1609-101 Refrigeration Thermostat Control with Remote Bulb 5 Ft Capillary**yeeluzan**$35.01**3.9★**▲ 339%**](https://www.amazon.com/dp/B0F7XRPGS8) [**Automatic Changeover Aquastat**First Company**$59.40**0.0★**▲ 168%**](https://www.amazon.com/dp/B07MDHFFD3) [**Grundfos 595444-3/4 Clip-on Aquastat Kit for UP Series Circulators 85-105F**Grundfos**$58.91**4.3★**▲ 144%**](https://www.amazon.com/dp/B0029P2WY6) [**Plug in Thermostat Temperature Controller Heavy Duty Digital Thermostat Outlet Plug Heating Cooling Mode Countdown Timer**ecoartheating**$23.17**4.4★**▲ 113%**](https://www.amazon.com/dp/B083FJ7GKR)
**~~View all trending →~~**
## **What buyers say about aquastat**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**19%
*“Works as advertised”*
**Assembly/Installation**18%
*“Easy install”*
**Quality-Overall**15%
*“Quality replacement controller”*
**Ease Of Use**11%
*“Its easy to use and program, and seems to be very accurate for temps”*
**Efficiency**9%
*“Worked well”*
**Value For Money**8%
*“Product saves you money”*
**Size-Overall**5%
*“Fit perfectly”*
**Adjustability/Rotatability/Reclining**3%
*“Works great, easy to read and adjust”*
**Correct Contents**3%
*“Correct part thank you”*
**Heating**3%
*“controlling the proper heat level is easy”*
### **What buyers complain about **
**Durability**19%
*“Broke on its own quickly”*
**Advertised Vs Actual Product**15%
*“Manuel while another version. this one shown doesn't”*
**Functionality-Overall**12%
*“Not sure why -- everything about it seems fine except that it doesn't let power through”*
**Auto Sleep/Wake Feature**8%
*“requires manual waking every time”*
**Instructions/User Manual/Troubleshooting**8%
*“No instructions came with this product”*
**Metal Quality**8%
*“Metal pipe only, burnished, alignment with pipe a challenge”*
**Heating**8%
*“No heat for 2 days, need heat”*
**Quality-Overall**8%
*“I had to resolder several joints on the board very poor quality control”*
**Measurement/Reading Accuracy**4%
*“It's not dead accurate”*
### **Top return reasons **
**Functionality-Overall**29%
**Compatibility-Overall**14%
**Advertised Vs Actual Product**13%
**Defective Material/Parts**9%
**Size-Overall**6%
**Measurement/Reading Accuracy**3%
**Display-Overall**3%
**Assembly/Installation**3%
**Instructions/User Manual/Troubleshooting**3%
**Product Condition**2%
## **Common questions**
- **Is aquastat profitable to sell on Amazon United States?**
- The niche generates $100K/yr across 21 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -65.2%. Flapen's verdict: Skip it (35/100).
- **How competitive is the aquastat niche?**
- 9 brands and 103 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 92% of demand.
- **What do buyers complain about in aquastat?**
- Top complaints mined from reviews: Durability, Advertised Vs Actual Product, Functionality-Overall. The return rate is 3.9%.
- **What does it cost to enter the aquastat niche?**
- Listings span $19.44–$375.18; the average listing price is $156.68 (sweet spot $15–$100). The average incumbent carries 80 reviews — the moat a new listing must climb.
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