---
title: "Reviews — furnace filters - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/furnace-filters/reviews"
last_updated: "2026-07-21T06:16:31.304Z"
locale: en
meta:
  description: "furnace filters clears our launch bar: a $11.1M/yr market growing +2.4% this quarter with returns at 1.1%. Data updated Jul 2026."
  "og:description": "furnace filters clears our launch bar: a $11.1M/yr market growing +2.4% this quarter with returns at 1.1%. Data updated Jul 2026."
  "og:title": "Reviews — furnace filters - Flapen"
---

# **furnace filters**

**Launch it**

A $11.1M/yr market growing +2.4% this quarter with returns at 1.1% — clears our launch bar.

Market size 100Growth 28Conversion 80Competition 55Returns 92Price range 95Avg price 95Brand share 56Review moat 10Quality gap 21

**Market size**

**Incredible****$11.1M**

$11.1M/yr · 3.6M searches

**Avg price**

**Incredible****$38.27**

avg listing price — sweet spot $15–$100

**Price range**

**Incredible****$21.92–$56.28**

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

**Returns**

**Great****1.1%**

return rate — above 6% kills the launch gate

**Conversion**

**Great****8.1%**

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

**Brand share**

**Good****71%**

top-5 brand share — brands hold most of the demand

**Competition**

**Good****52%**

top-5 click share — leaders hold, buyers still browse

**Growth**

**Okay****+2.4%**

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

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Bad****31,043.16**

avg incumbent reviews — the moat a new listing must climb