Aquarium Heater
MaybeThe 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 / 100Top 35% of 875 Pet Supplies niches · +3 vs the category median of 5053
- 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.
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.
Top sellers
by estimated 90-day click share
HITOP HP-608 Submersible Aquarium Heater 25W 50W With Thermometer and Extra Sucker Cup
- Price
- £9.95
- Rating
- 4.4/5
- Reviews
- 1,058
- Age
- 6y ago

Hepo HP-608 Quartz Aquarium Fish Tank Heater Submersible Thermostat 25w to 300w (25w)
- Price
- £9.11
- Rating
- 4.4/5
- Reviews
- 279
- Age
- 10y ago

QZQ Fish Tank Heater Submersible Aquarium Heater Features LED External Thermostat 50W/75W/100W/150W/200W Power Options Suitable for Freshwater Aquariums of Various Sizes (50W)
- Price
- £12.32
- Rating
- 4.0/5
- Reviews
- 28
- Age
- 6mo ago
![Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)](https://m.media-amazon.com/images/I/41N57XmmMXL.jpg)
Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)
- Price
- £8.28
- Rating
- 3.3/5
- Reviews
- 5
- Age
- 5mo ago

HITOP HP-608 Submersible Aquarium Heater 25W 50W With Thermometer and Extra Sucker Cup (50W)
- Price
- £10.82
- Rating
- 4.4/5
- Reviews
- 1,050
- Age
- 7y ago
Trending
estimated 90-day click momentum![Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)](https://m.media-amazon.com/images/I/41N57XmmMXL.jpg)
Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)
- Price
- £8.28
- Rating
- 3.3/5
- Reviews
- 5
- Age
- 5mo ago

QZQ Fish Tank Heater Submersible Aquarium Heater Features LED External Thermostat 50W/75W/100W/150W/200W Power Options Suitable for Freshwater Aquariums of Various Sizes (50W)
- Price
- £12.32
- Rating
- 4.0/5
- Reviews
- 28
- Age
- 6mo ago

Kuleyang Fish Tank Heater 10W Mini Aquarium Heater with Thermostat Submersible USB Heating Rod for Small Fish Tanks Turtle Tanks Tropical Aquariums Freshwater Saltwater
- Price
- £7.55
- Rating
- 3.6/5
- Reviews
- 21
- Age
- 1y ago

GlintBay 100W Fish Tank Heater for 50L Aquariums 100W Submersible Digital Aquarium Heater with Thermometer Small Betta Fish Tank Turtle Tank Heater with LED Temperature
- Price
- £13.38
- Rating
- 5.0/5
- Reviews
- 7
- Age
- 8mo ago

Hepo HP-608 Quartz Aquarium Fish Tank Heater Submersible Thermostat 25w to 300w (25w)
- Price
- £9.11
- Rating
- 4.4/5
- Reviews
- 279
- Age
- 10y ago
Newest
by launch date![Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)](https://m.media-amazon.com/images/I/41N57XmmMXL.jpg)
Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (25w)
- Price
- £8.28
- Rating
- 3.3/5
- Reviews
- 5
- Age
- 5mo ago
![Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (100w)](https://m.media-amazon.com/images/I/41N57XmmMXL.jpg)
Hepo Glass Aquarium Heater [25-300w options] HP-605 Submersible Fish Tank Heater Bundle Includes Protective Heater Guard & Digital Thermometer Fully Adjustable Tropical/Saltwater Safety Kit (100w)
- Price
- £9.09
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 5mo ago

QZQ Fish Tank Heater Submersible Aquarium Heater Features LED External Thermostat 50W/75W/100W/150W/200W Power Options Suitable for Freshwater Aquariums of Various Sizes (50W)
- Price
- £12.32
- Rating
- 4.0/5
- Reviews
- 28
- Age
- 6mo ago

GlintBay 100W Fish Tank Heater for 50L Aquariums 100W Submersible Digital Aquarium Heater with Thermometer Small Betta Fish Tank Turtle Tank Heater with LED Temperature
- Price
- £13.38
- Rating
- 5.0/5
- Reviews
- 7
- Age
- 8mo ago

Kuleyang Fish Tank Heater 10W Mini Aquarium Heater with Thermostat Submersible USB Heating Rod for Small Fish Tanks Turtle Tanks Tropical Aquariums Freshwater Saltwater
- Price
- £7.55
- Rating
- 3.6/5
- Reviews
- 21
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 55% of clicks. Leaders hold, but buyers still shop past them.
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.
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.
“no heat”
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
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
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









