Skip to content

Aquarium Heater

Maybe

The products selling today average only 4.3★. But demand is soft, at -33.7% this quarter, so Aquarium Heater is a Maybe.

Flapen Score
53
53 / 100
Top 35% of 875 Pet Supplies niches · +3 vs the category median of 50
Market size
£280K/yr375K searches / yr
90-day growth
-33.7%search demand this quarter
Competition
55%top-5 click share · 18 brands · 37 sellers

Flapen Score

Aquarium Heater against its category

The dotted line is the Pet Supplies average. Past it, Aquarium Heater is stronger. Inside it, weaker.

53Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Aquarium Heater market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Aquarium Heater 375K times last year and spent an estimated £280K. The top 5 brands take 69% of clicks. Demand peaks in Jan–Feb. Flapen scores it 53 out of 100, a Maybe.

01 · Demand

An estimated 5.6% of those searches ended in a purchase.

Shoppers searched for this 375K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 5.6% of those searches ended in a purchase. Searches in the last 90 days moved -33.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £280K a year.

Searches, last 12 months
375K
Growth, 90 days vs prior 90
-33.7%
Conversion, latest week
5.6%
Market size, estimated
£280Ka year
Peak month
January2.1× the quietest month
Top search term
fish tank heater121K searches a year

02 · Price

A sale here is worth £13.36.

Listings sell for £13.36 on average, from £7.13 to £26.27. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 250 to 500 of them. At £13.36 that is £3K to £7K a year per listing.

Average price
£13.36under the $15 to $100 sweet spot
Price range
£7.13–£26.27
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
15K–20K
Units per listing a year
250–500
Revenue per listing a year
£3K–£7K
Returns
2.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

85% of listings pay for placement with sponsored ads. 88% ship with Prime. On an average day, 8.9% of listings are out of stock. The average listing ranks #19 within Fish & Aquatic Pets. It carries 486 reviews at 4.28 stars, so a new listing needs social proof before a better product.

Sponsored listings
85%
Prime listings
88%
Out of stock, average day
8.9%
Average rank
#19in Fish & Aquatic Pets
Average rating
4.28 starsAmazon United Kingdom average 4.36 stars
Average reviews
486per listing
Listings tracked
26

04 · Newcomers

0 of last year's 5 launches cleared the first-year sales bar.

5 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 54 months on average, so the names here are settling in.

Launched, last 12 months
5
Successful launches
0Amazon's first-year sales bar
Average brand age
54 months

Products

Top Aquarium Heater products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 55% of clicks. Leaders hold, but buyers still shop past them.

£0£14K£28K£42K£56K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

18 falling

Sellers

37

Est. top-5 brand share

69%

Top 20: 100%

Est. top-5 click share

55%

Top 20: 95%

Open market

24%

  • HITOP29%
  • Hepo11%
  • Finest-Filters10%
  • QZQ10%
  • PYPABL9%
  • Fluval7%

Demand

Aquarium Heater search demand

Weekly searches over the year, seasonality beneath. Pick a range.

10K6KSpike '24Black Friday '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 2.1×

Search terms

Top Aquarium Heater search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • fish tank heater121K/yr
  • aquarium heater129K/yr
  • fish tank heaters for tropical26K/yr
  • heater for fish tank10K/yr
  • aquarium heater 100w11K/yr
  • aquarium heaters11K/yr
  • aquarium heater 50w8K/yr
  • 50w aquarium heater8K/yr
  • tank heater7K/yr
  • tropical fish tank heater6K/yr

Reviews and returns

What reviews say buyers love and hate about Aquarium Heater

We read the reviews and the return reasons for every product selling here.

46%of positive reviews mention “Heating”
26%of negative reviews mention “Heating”
2.1%of orders come back
“no heat”
A buyer, on “Heating”26% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

17 topics

NegativePositive

FAQ

Common Aquarium Heater questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data