Is pool thermometer sinking profitable to sell on Amazon United States?

The niche generates $9K/yr across 10 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +568.5%. Flapen's verdict: Worth a look (53/100).

How competitive is the pool thermometer sinking niche?

8 brands and 41 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in pool thermometer sinking?

Top complaints mined from reviews: Measurement/Reading Accuracy, Size-Overall, Quality-Overall. The return rate is 0.1%.

When does demand for pool thermometer sinking peak?

Demand peaks in May–Jun–Jul; the busiest month runs 37.0× the quietest.

What does it cost to enter the pool thermometer sinking niche?

Listings span $8.01–$17.31; the average listing price is $11.67 (sweet spot $15–$100). The average incumbent carries 1,473 reviews — the moat a new listing must climb.

pool thermometer sinking

Worth a look

Shows demand growing +568.5% this quarter, but a small market ($9K/yr) keeps it on the watch list.

Growth

Incredible+568.5%

90-day search growth — must beat 0% to launch

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Conversion

Great8.4%

search→purchase rate — share of searches ending in a sale

Review moat

Good1,472.7

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay$11.67

avg listing price — sweet spot $15–$100

Price range

Okay$8.01–$17.31

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Bad92%

top-5 brand share — brand-locked demand

Competition

Bad84%

top-5 click share — a locked-up shelf

Market size

Bad$9K

$9K/yr · 9K searches

Signals Trending Quality Gap

According to Flapen's Amazon United States niche tracking, pool thermometer sinking is a $9K/yr Amazon United States market (9K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 53/100.

Data updated Jul 15, 2026 · scored weekly · How we score niches

pool thermometer sinking market data

Units sold / yr: 750–1K; avg 0–100/product
Revenue / yr: $9K–$12K; units × avg price
Conversion rate: 8.4%
Avg BSR: #100
Page quality: 0%
Prime: 60%
Sponsored: 80%
Out of stock: 7.2%
Avg brand age: 53 months
Avg seller age: 186 days

Competition & brand share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

XY-WQ32%
U.S. Pool Supply20%
Pentair17%
SplashTech15%
Poolmaster7%
HDBHSBE5%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +568.5% search growth over the last 90 days.

Peak months: May, Jun, Jul · busiest ÷ quietest = 37.0×

Open Trend

Top pool thermometer sinking 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

XY-WQ 10 Large Shark Pool Thermometer Jumbo Easy-Read Pool Water Thermometer with Fully Sinking Design for Accurate Readings Tether Included for Swimming Pool Spa Hot Tub & Pond

XY-WQ$9.793.9★611 rev

U.S. Pool Supply Scoop Pool Thermometer with Jumbo Easy to Read Temperature Display

U.S. Pool Supply$8.944.1★2,340 rev

SplashTech Pocket Reservoir Pool Thermometer - Shatter Proof Dual Fahrenheit & Celsius Display 9.5 Cord - Swimming Pool Spa Hot Tub Pond Jacuzzi Maintenance Equipment

SplashTech$11.244.2★2,622 rev

Pentair R141036 127 Tube Thermometer with ABS Case and 3-Feet Cord

Pentair$14.724.3★2,545 rev

Poolmaster 25285 Residential Thermometer - Classic Collection Medium

Poolmaster$12.243.4★82 rev

Newest

by launch date

Pool Thermometer Sinking Type 0-50 Easy Read Accurate Pool Thermometer with String for Outdoor Indoor Spas Aquarium Ponds Sinking with String

HDBHSBE$8.012 rev

3mo ago

Pool Thermometer Floating Water Temperature Thermometer with String Large Size Easy Read & Shatter Resistant Pool Accessories for Outdoor & Indoor Swimming Pools Spas Hot Tubs & Aquariums.(White)

Inpool$9.23747 rev

8mo ago

XY-WQ 10 Large Shark Pool Thermometer Jumbo Easy-Read Pool Water Thermometer with Fully Sinking Design for Accurate Readings Tether Included for Swimming Pool Spa Hot Tub & Pond

XY-WQ$9.79611 rev

11mo ago

U.S. Pool Supply Scoop Pool Thermometer with Jumbo Easy to Read Temperature Display

U.S. Pool Supply$8.942,340 rev

9y ago

[Large Floating Pool Thermometer] eLander Pro Water Thermometers for Outdoor & Indoor Swimming Pools Spas Hot Tubs Fish Ponds

eLander$9.165,427 rev

10y ago

What buyers say about pool thermometer sinking

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

What buyers love

Ease Of Use21%

“very convenient to use”

Advertised Vs Actual Product19%

“Just what we needed”

Value For Money11%

“Good price”

Measurement/Reading Accuracy10%

“Very accurate”

Quality-Overall9%

“Very well-made product”

Size-Overall5%

“Perfect size”

Design-Overall3%

“sleek design”

Durability3%

“Great quality and durable”

Strength2%

“It feels sturdy and well made, and it adds a fun touch to the pool area while still being very functional”

Weight Light1%

“Its light and floats nicely”

What buyers complain about

Measurement/Reading Accuracy16%

“Inaccurate Readings”

Size-Overall15%

“The string is short”

Quality-Overall14%

“Cheap junk”

Functionality-Overall9%

“Never worked correctly unfortunately”

Ease Of Use9%

“Hard to read”

Durability7%

“Broke almost immediately after using it”

Water Resistance5%

“Was not waterproof”

Material Quality2%

“Arrived broken - made of cheap materials”

Advertised Vs Actual Product2%

“Pictures and advertising are deceiving”

Defective Material/Parts1%

“This item is defective”

Top return reasons

Measurement/Reading Accuracy39%

Functionality-Overall16%

Heating10%

Defective Material/Parts7%

Advertised Vs Actual Product7%

Size-Overall6%

Value For Money3%

Leak-Proof2%

Ease Of Use2%

Quality-Overall1%

Common questions

Is pool thermometer sinking profitable to sell on Amazon United States?: The niche generates $9K/yr across 10 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +568.5%. Flapen's verdict: Worth a look (53/100).
How competitive is the pool thermometer sinking niche?: 8 brands and 41 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in pool thermometer sinking?: Top complaints mined from reviews: Measurement/Reading Accuracy, Size-Overall, Quality-Overall. The return rate is 0.1%.
When does demand for pool thermometer sinking peak?: Demand peaks in May–Jun–Jul; the busiest month runs 37.0× the quietest.
What does it cost to enter the pool thermometer sinking niche?: Listings span $8.01–$17.31; the average listing price is $11.67 (sweet spot $15–$100). The average incumbent carries 1,473 reviews — the moat a new listing must climb.