Skip to content

Radiator Key

Fail

Demand is soft, at -76.8% this quarter, so Radiator Key is a Fail.

Flapen Score
45
45 / 100
Ranks 1,445 of 2,225 DIY & Tools niches · −4 vs the category median of 49
Market size
£557K/yr725K searches / yr
90-day growth
-76.8%search demand this quarter
Competition
78%top-5 click share · 14 brands · 22 sellers

Flapen Score

Radiator Key against its category

The dotted line is the DIY & Tools average. Past it, Radiator Key is stronger. Inside it, weaker.

45Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Radiator Key market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Radiator Key 725K times last year and spent an estimated £557K. The top 5 brands take 78% of clicks. Demand peaks in Jan–Feb–Oct–Nov–Dec. Flapen scores it 45 out of 100, a Fail.

01 · Demand

An estimated 21.1% of those searches ended in a purchase.

Shoppers searched for this 725K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 21.1% of those searches ended in a purchase. Searches in the last 90 days moved -76.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £557K a year.

Searches, last 12 months
725K
Growth, 90 days vs prior 90
-76.8%
Conversion, latest week
21.1%
Market size, estimated
£557Ka year
Peak month
November21.4× the quietest month
Top search term
radiator key504K searches a year

02 · Price

A sale here is worth £3.64.

Listings sell for £3.64 on average, from £2.32 to £6.06. Amazon reports units sold in ranges. This niche sold 150K to 200K a year. The average listing sells 8,000 to 10,000 of them. At £3.64 that is £29K to £36K a year per listing.

Average price
£3.64under the $15 to $100 sweet spot
Price range
£2.32–£6.06
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
150K–200K
Units per listing a year
8,000–10,000
Revenue per listing a year
£29K–£36K
Returns
0.2%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

71% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 8.6% of listings are out of stock. The average listing ranks #208 within Building Supplies. It carries 1,559 reviews at 4.42 stars, so a new listing needs social proof before a better product.

Sponsored listings
71%
Prime listings
100%
Out of stock, average day
8.6%
Average rank
#208in Building Supplies
Average rating
4.42 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,559per listing
Listings tracked
14

04 · Newcomers

1 of last year's 4 launches cleared the first-year sales bar.

4 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 41 months on average, so the names here are settling in.

Launched, last 12 months
4
Successful launches
1Amazon's first-year sales bar
Average brand age
41 months

Products

Top Radiator Key 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.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 78% of clicks. A locked shelf that new listings rarely crack.

£0£56K£111K£167K£223K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

14 rising

Sellers

22

Est. top-5 brand share

78%

Top 20: 100%

Est. top-5 click share

78%

Top 20: 100%

Open market

15%

  • WZ25%
  • G4GADGET14%
  • Heatlab14%
  • Mellbree12%
  • EQUIP247UK12%
  • Nartel7%
  • Open — no brand owns it (8 brands, 15%)

Demand

Radiator Key search demand

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

60K40KSpike '24Black Friday '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Oct, Nov, Dec · busiest ÷ quietest = 21.4×

Search terms

Top Radiator Key search terms shoppers use

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

  • radiator key504K/yr
  • radiator bleed key91K/yr
  • radiator key bleed key uk37K/yr
  • radiator valve key11K/yr
  • bleed key14K/yr
  • radiator keys9K/yr
  • radiator bleeding key13K/yr
  • radiator keys to bleed uk7K/yr
  • radiator bleed key uk6K/yr
  • rad key3K/yr

Reviews and returns

What reviews say buyers love and hate about Radiator Key

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

22%of positive reviews mention “Ease Of Use”
30%of negative reviews mention “Size-Overall”
0.2%of orders come back
“Didnt fit”
A buyer, on “Size-Overall”30% 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.

19 topics

NegativePositive

FAQ

Common Radiator Key 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