Water Heater
MaybeThe products selling today average only 4.0★. But demand is soft, at -22.2% this quarter, so Water Heater is a Maybe.
- Flapen Score
- 53 / 100Top 29% of 2,225 DIY & Tools niches · +4 vs the category median of 4953
- Market size
- £240K/yr303K searches / yr
- 90-day growth
- -22.2%search demand this quarter
- Competition
- 46%top-5 click share · 32 brands · 59 sellers
Flapen Score
Water Heater against its category
The dotted line is the DIY & Tools average. Past it, Water Heater is stronger. Inside it, weaker.
Market
The Water Heater market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Water Heater 303K times last year and spent an estimated £240K. The top 5 brands take 49% of clicks. Demand peaks in Jan. Flapen scores it 53 out of 100, a Maybe.
01 · Demand
An estimated 1.5% of those searches ended in a purchase.
Shoppers searched for this 303K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 1.5% of those searches ended in a purchase. Searches in the last 90 days moved -22.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £240K a year.
- Searches, last 12 months
- 303K
- Growth, 90 days vs prior 90
- -22.2%
- Conversion, latest week
- 1.5%
- Market size, estimated
- £240Ka year
- Peak month
- January1.7× the quietest month
- Top search term
- water heater81K searches a year
02 · Price
A sale here is worth £52.03.
Listings sell for £52.03 on average, from £6.27 to £209.77. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 100 to 250 of them. At £52.03 that is £5K to £13K a year per listing.
- Average price
- £52.03inside the $15 to $100 sweet spot
- Price range
- £6.27–£209.77
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £5K–£13K
- Returns
- 3.2%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. 68% ship with Prime. On an average day, 19.5% of listings are out of stock. The average listing ranks #696 within Plumbing. It carries 567 reviews at 4.03 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 85%
- Prime listings
- 68%
- Out of stock, average day
- 19.5%
- Average rank
- #696in Plumbing
- Average rating
- 4.03 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 567per listing
- Listings tracked
- 41
04 · Newcomers
3 of last year's 11 launches cleared the first-year sales bar.
11 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 46 months on average, so the names here are settling in.
- Launched, last 12 months
- 11
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 46 months
Products
Top Water 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 22, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Portable Water Heater Immersion Heater 2000W Fast Heating Portable Water Heater with 304 Stainless Steel Bucket Heater with Digital LCD Thermometer for Home Camping Bath Pool Outdoor (1 pcs)
- Price
- £19.59
- Rating
- 3.7/5
- Reviews
- 55
- Age
- 1y ago

Triton Showers SPT303I T30I handwash Water Heater White
- Price
- £43.88
- Rating
- 4.4/5
- Reviews
- 836
- Age
- 6y ago

Portable Water Heater 2000W Fast Heating Swimming Pool Heater with 304 Stainless Steel and Digital LCD Thermometer Heats 5 Gallons in Minutes for Home Camping Bath Pool Outdoor
- Price
- £21.31
- Rating
- 3.2/5
- Reviews
- 26
- Age
- 11mo ago

Ariston ANDRIS R 10 L Undersink Electric Water Heater 2kW Control Unit B class ErP rating Economy E Setting Manufactured to be installed in UK - 3100863.
- Price
- £80.63
- Rating
- 4.3/5
- Reviews
- 50
- Age
- 5y ago

Boiling Water Heating Tube Portable Water Heater Immersion Water Heater Camping Water Heater for Hot Water Coffee Tea Cocoa Milk Hot Chocolate Resists Rust and High Temperature (220V 600W)
- Price
- £6.27
- Rating
- 3.8/5
- Reviews
- 10
- Age
- 10mo ago
Trending
estimated 90-day click momentum
2000w Immersion Heater Portable Water Heater Digital Display Thermostat Auto Overheating Cut-Out Fast Heating In Mins 304 Stainless Steel for Bucket Bathtub Small Pool Camping
- Price
- £19.25
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 4mo ago

Portable Water Heater 2000W Immersion Heater Fast Heating Swimming Pool Heater with 304 Stainless Steel and Digital LCD Thermometer Heats 5 Gallons in Minutes for Home Camping Bath Pool Outdoor
- Price
- £16.89
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 6mo ago
![WADEO Portable Shower [Hot Water] [10 Days Runtime] Rechargeable Outdoor Shower Kit for Camping Travel Dog Car Emergency](https://m.media-amazon.com/images/I/51tYKTD44gL.jpg)
WADEO Portable Shower [Hot Water] [10 Days Runtime] Rechargeable Outdoor Shower Kit for Camping Travel Dog Car Emergency
- Price
- £56.36
- Rating
- 4.8/5
- Reviews
- 9
- Age
- 6mo ago

Tesla 23 Copper Immersion Heater with 2.1/4 Boss
- Price
- £20.71
- Rating
- 4.4/5
- Reviews
- 19
- Age
- 7y ago

HITOP HP-608 Submersible Aquarium Heater 25W 50W With Thermometer and Extra Sucker Cup
- Price
- £9.95
- Rating
- 4.4/5
- Reviews
- 1,056
- Age
- 6y ago
Newest
by launch date
2000w Immersion Heater Portable Water Heater Digital Display Thermostat Auto Overheating Cut-Out Fast Heating In Mins 304 Stainless Steel for Bucket Bathtub Small Pool Camping
- Price
- £19.25
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 4mo ago

Portable Water Heater 2000W Immersion Heater Fast Heating Swimming Pool Heater with 304 Stainless Steel and Digital LCD Thermometer Heats 5 Gallons in Minutes for Home Camping Bath Pool Outdoor
- Price
- £16.89
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 6mo ago

Portable Water Heater 2000W Immersion Heater with 304 Stainless Steel Cover and Temperature Controller Automatic Power Off Fast Heating for Home Camping Bath Pool Outdoor
- Price
- £20.76
- Rating
- 4.3/5
- Reviews
- 5
- Age
- 6mo ago
![WADEO Portable Shower [Hot Water] [10 Days Runtime] Rechargeable Outdoor Shower Kit for Camping Travel Dog Car Emergency](https://m.media-amazon.com/images/I/51tYKTD44gL.jpg)
WADEO Portable Shower [Hot Water] [10 Days Runtime] Rechargeable Outdoor Shower Kit for Camping Travel Dog Car Emergency
- Price
- £56.36
- Rating
- 4.8/5
- Reviews
- 9
- Age
- 6mo ago

2500 W Water Heater Portable Electric Water Heater with 304 Stainless Steel Lid and Thermostat Automatic Shut-Off
- Price
- £36.89
- Rating
- 3.7/5
- Reviews
- 12
- Age
- 9mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 46% of clicks. Leaders hold, but buyers still shop past them.
Brands
32 rising
Sellers
59
Est. top-5 brand share
49%
Top 20: 89%
Est. top-5 click share
46%
Top 20: 81%
Open market
46%
- Triton Showers13%
- JOPWUE13%
- GINGER TECH10%
- Ariston8%
- Grosion5%
- HITOP5%
Demand
Water Heater search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan · busiest ÷ quietest = 1.7×
Search terms
Top Water Heater search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- water heater81K/yr
- portable water heater39K/yr
- immersion heater25K/yr
- electric water heater26K/yr
- immersion water heater14K/yr
- under sink water heater14K/yr
- instant water heater16K/yr
- water heater for sink13K/yr
- water heater for bath15K/yr
- camping water heater7K/yr
Reviews and returns
What reviews say buyers love and hate about Water Heater
We read the reviews and the return reasons for every product selling here.
“Heater did not work”
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 Water 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








