---
title: "Reviews — whirlpool refrigerator water filter 4 - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/whirlpool-refrigerator-water-filter-4/reviews"
last_updated: "2026-08-09T12:04:50.872Z"
locale: en
meta:
  description: "Niche score 49/100 · $1.2M/yr market · 174K searches/yr · $32.96 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 49/100 · $1.2M/yr market · 174K searches/yr · $32.96 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — whirlpool refrigerator water filter 4 - Flapen"
---

# **whirlpool refrigerator water filter 4**

**Skip it**

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 81Growth 33Conversion 100Competition 3Returns 91Price range 95Avg price 95Brand share 0Review moat 20Quality gap 17

**Conversion**

**Incredible****20.7%**

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

**Avg price**

**Incredible****$32.96**

avg listing price — sweet spot $15–$100

**Price range**

**Incredible****$22.37–$50.05**

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

**Returns**

**Great****1.2%**

return rate — above 5% kills the launch gate

**Market size**

**Great****$1.2M**

$1.2M/yr · 174K searches

**Growth**

**Okay****+6.8%**

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

**Review moat**

**Bad****13,043.83**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Competition**

**Bad****96%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****100%**

top-5 brand share — brand-locked demand

## Reviews