---
title: "F273699 Mr. Heater Fuel Filter — $13K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/f273699-mr-heater-fuel-filter"
last_updated: "2026-08-10T16:58:20.207Z"
locale: en
meta:
description: "Niche score 29/100 · $13K/yr market · 8K searches/yr · $15.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 29/100 · $13K/yr market · 8K searches/yr · $15.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "F273699 Mr. Heater Fuel Filter — $13K/yr Amazon US Niche (2026) - Flapen"
---
# **f273699 mr. heater fuel filter**
**Skip it**
Soft demand (-90.5% this quarter) — this niche doesn't clear our bar today.
Market size 3Growth 0Conversion 91Competition 0Returns 65Price range 66Avg price 76Brand share 0Review moat 62Quality gap 23
**Conversion**
**Great****11.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.26**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$14.36–$16.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Good****2.4%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****1,038.67**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$13K**
$13K/yr · 8K searches
**Growth**
**Bad****-90.5%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, f273699 mr. heater fuel filter is a $13K/yr Amazon United States market (8K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 29/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **f273699 mr. heater fuel filter market data**
- **Units sold / yr**
- **1K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$19K–$23K**
- units × avg price
- **Conversion rate**
- **11.1%**
- **Avg BSR**
- **#126**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **3.9%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **188 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **—flat
**Sellers**
**16**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- CALPOSE45% - FJXBYWM31% - Mr. Heater24%
## **Demand**
Weekly Amazon search volume, last 16 weeks — -90.5% search growth over the last 90 days.
4535Spike '26Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/f273699-mr-heater-fuel-filter/trend)
## **Top f273699 mr. heater fuel filter products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$2K30%$4K45%$6K60%$8K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 3 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**CALPOSE F273699 Propane Fuel Filter for Mr.Heater Buddy Propane Filter for Big Buddy & Portable Buddy Galvanized Aluminum Buddy Heater Filter Accessories**CALPOSE**$14.36**4.5★345 rev](https://www.amazon.com/dp/B0DL2QC9RB) [2**FJXBYWM Propane Fuel Filter F273699 for Portable Propane Heaters & Grills Inline LP Gas Heater Filter Fits Propane Hoses F273704 F273701 F273702 etc for Camping RV Garage Outdoor Heater/Cooking.**FJXBYWM**$15.15**4.7★113 rev](https://www.amazon.com/dp/B0FBLMC6RQ) [3**Mr. Heater Fuel Filter for Big Buddy & Portable Buddy F276163**Mr. Heater**$16.26**4.7★2,658 rev](https://www.amazon.com/dp/B00PJYL9IO)
### **Newest**
by launch date
[**FJXBYWM Propane Fuel Filter F273699 for Portable Propane Heaters & Grills Inline LP Gas Heater Filter Fits Propane Hoses F273704 F273701 F273702 etc for Camping RV Garage Outdoor Heater/Cooking.**FJXBYWM**$15.15**113 rev1y ago](https://www.amazon.com/dp/B0FBLMC6RQ) [**CALPOSE F273699 Propane Fuel Filter for Mr.Heater Buddy Propane Filter for Big Buddy & Portable Buddy Galvanized Aluminum Buddy Heater Filter Accessories**CALPOSE**$14.36**345 rev1y ago](https://www.amazon.com/dp/B0DL2QC9RB) [**Mr. Heater Fuel Filter for Big Buddy & Portable Buddy F276163**Mr. Heater**$16.26**2,658 rev11y ago](https://www.amazon.com/dp/B00PJYL9IO)
### **Trending**
90-day click momentum
[**Mr. Heater Fuel Filter for Big Buddy & Portable Buddy F276163**Mr. Heater**$16.26**4.7★**▲ 33%**](https://www.amazon.com/dp/B00PJYL9IO) [**FJXBYWM Propane Fuel Filter F273699 for Portable Propane Heaters & Grills Inline LP Gas Heater Filter Fits Propane Hoses F273704 F273701 F273702 etc for Camping RV Garage Outdoor Heater/Cooking.**FJXBYWM**$15.15**4.7★**— 3%**](https://www.amazon.com/dp/B0FBLMC6RQ) [**CALPOSE F273699 Propane Fuel Filter for Mr.Heater Buddy Propane Filter for Big Buddy & Portable Buddy Galvanized Aluminum Buddy Heater Filter Accessories**CALPOSE**$14.36**4.5★**▼ 14%**](https://www.amazon.com/dp/B0DL2QC9RB)
## **What buyers say about f273699 mr. heater fuel filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**37%
*“Just What was advertised”*
**Filtration**16%
*“Filter”*
**Quality-Overall**12%
*“Good product and quality”*
**Size-Overall**9%
*“Fit perfectly”*
**Value For Money**7%
*“its well worth it”*
**Heating**4%
*“Keep the heat on”*
**Leak-Proof**4%
*“No noticeable leaks”*
**Ease Of Use**3%
*“Good use”*
**Efficiency**2%
*“Works great”*
**Strength**2%
*“built well”*
### **What buyers complain about **
**Size-Overall**21%
*“The filter I received for my Mr Heater Buddy did not fit”*
**Durability**18%
*“Part failed in just over 2 months”*
**Heating**18%
*“It didn't work in the heater I got”*
**Advertised Vs Actual Product**9%
*“Might be misleading advertising”*
**Filtration**9%
*“something is lose inside the filter”*
**Quality-Overall**9%
*“Garbage”*
**Compatibility-Overall**6%
*“can't couple with 5-foot hose”*
**Functionality-Overall**6%
*“Did not work”*
**Value For Money**3%
*“Wasted money”*
**Spray/Flow**3%
*“Did not flow enough gas”*
### **Top return reasons **
**Size-Overall**33%
**Compatibility-Overall**17%
**Filtration**11%
**Value For Money**8%
**Defective Material/Parts**5%
**Advertised Vs Actual Product**5%
**Functionality-Overall**4%
**Heating**3%
**Product Condition**2%
**Add-Ons/Attachments**2%
## **Common questions**
- **Is f273699 mr. heater fuel filter profitable to sell on Amazon United States?**
- The niche generates $13K/yr across 3 tracked products. 90-day search growth is -90.5%. Flapen's verdict: Skip it (29/100).
- **How competitive is the f273699 mr. heater fuel filter niche?**
- 3 brands and 16 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in f273699 mr. heater fuel filter?**
- Top complaints mined from reviews: Size-Overall, Durability, Heating. The return rate is 2.4%.
- **What does it cost to enter the f273699 mr. heater fuel filter niche?**
- Listings span $14.36–$16.26; the average listing price is $15.26 (sweet spot $15–$100). The average incumbent carries 1,039 reviews — the moat a new listing must climb.
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