aquastat
Skip itSoft demand (-65.2% this quarter) — this niche doesn't clear our bar today.
Review moat
Incredible80.43avg incumbent reviews — the moat a new listing must climb
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Avg price
Good$156.68avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Returns
Okay3.9%return rate — above 5% kills the launch gate
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Market size
Okay$100K$100K/yr · 29K searches
Price range
Bad$19.44–$375.18cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad92%top-5 brand share — brand-locked demand
Growth
Bad-65.2%90-day search growth — must beat 0% to launch
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
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.Top aquastat search terms
- aquastat12K/yr
- aquastat for boiler12K/yr
- honeywell aquastat5K/yr
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.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$83.255.0★7 rev
Honeywell L6006C1018 Aquastat Controller
Honeywell$157.844.7★117 rev
L8148E1265 AQUASTAT RELAY-LOW VOLT BURNER CIRC
Honeywell$321.094.4★197 rev
Honeywell L4080B1352 High Limit AquStat 1 x 1 x 1
Honeywell$87.674.3★52 rev
Grundfos 595444-3/4 Clip-on Aquastat Kit for UP Series Circulators 85-105F
Grundfos$58.914.3★83 rev
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$19.44110 rev
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$83.257 rev
W1609-101 Refrigeration Thermostat Control with Remote Bulb 5 Ft Capillary
yeeluzan$35.019 rev
Plug in Thermostat Temperature Controller Heavy Duty Digital Thermostat Outlet Plug Heating Cooling Mode Countdown Timer
ecoartheating$23.17580 rev
H1ywell Home Aquastat Relay L8148a1017
Honeywell$258.7912 rev
Trending
90-day click momentumZILLSEA Digital Temperature Controller Heating & Cooling Thermostat Plug Outlet 40F~210F 15A 1800W LCD Display Temperature Controlled Outlet for Homebrew Greenhouse Incubator
ZILLSEA$19.444.4★
W1609-101 Refrigeration Thermostat Control with Remote Bulb 5 Ft Capillary
yeeluzan$35.013.9★
Automatic Changeover Aquastat
First Company$59.400.0★
Grundfos 595444-3/4 Clip-on Aquastat Kit for UP Series Circulators 85-105F
Grundfos$58.914.3★
Plug in Thermostat Temperature Controller Heavy Duty Digital Thermostat Outlet Plug Heating Cooling Mode Countdown Timer
ecoartheating$23.174.4★
What buyers say about aquastat
What buyers praise and complain about, mined from review topics.What buyers love
“Works as advertised”
“Easy install”
“Quality replacement controller”
“Its easy to use and program, and seems to be very accurate for temps”
“Worked well”
“Product saves you money”
“Fit perfectly”
“Works great, easy to read and adjust”
“Correct part thank you”
“controlling the proper heat level is easy”
What buyers complain about
“Broke on its own quickly”
“Manuel while another version. this one shown doesn't”
“Not sure why -- everything about it seems fine except that it doesn't let power through”
“requires manual waking every time”
“No instructions came with this product”
“Metal pipe only, burnished, alignment with pipe a challenge”
“No heat for 2 days, need heat”
“I had to resolder several joints on the board very poor quality control”
“It's not dead accurate”
Top return reasons
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.