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broan 678 replacement parts

Skip it

A concentrated shelf (top 5 take 88% of clicks) — this niche doesn't clear our bar today.

Market size 11Growth 49Conversion 80Competition 10Returns 23Price range 95Avg price 93Brand share 19Review moat 98Quality gap 50

Review moat

Incredible41.75

avg incumbent reviews — the moat a new listing must climb

Price range

Incredible$40.25–$83.01

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

Avg price

Great$50.54

avg listing price — sweet spot $15–$100

Conversion

Great8.2%

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

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+19.4%

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

Returns

Bad5.6%

return rate — above 5% kills the launch gate

Brand share

Bad92%

top-5 brand share — brand-locked demand

Market size

Bad$45K

$45K/yr · 11K searches

Competition

Bad88%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United States niche tracking, broan 678 replacement parts is a $45K/yr Amazon United States market (11K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 42/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

broan 678 replacement parts market data

Units sold / yr
750–1K
avg 100–250/product
Revenue / yr
$38K–$51K
units × avg price
Conversion rate
8.2%
Avg BSR
#1,280
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
3.9%
Avg brand age
34 months
Avg seller age
184 days

Competition & brand share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

11

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

3%

  • Bghdas54%
  • Cylrod17%
  • Generic10%
  • MLDWH6%
  • Merchandise Mecca5%
  • Acyoyava4%
  • Open — no brand owns it (1 brand, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +19.4% search growth over the last 90 days.
600400Spike '24Black Friday '24Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top broan 678 replacement parts 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%$7K30%$13K45%$20K60%$27K110100 Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 8 tracked products in this niche — three views at once, no toggling.

What buyers say about broan 678 replacement parts

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall29%

“Fit perfect”

Noise Level17%

“fan is quiet”

Assembly/Installation17%

“Installation was quick”

Advertised Vs Actual Product6%

“Just as advertised”

Ease Of Use6%

“Quick, easy and affordable”

Quality-Overall5%

“Great quality and easy swap out for oe fan motor”

Value For Money4%

“cheaper than a stand alone motor”

Functionality-Overall2%

“Snaps right in”

Efficiency1%

“Worked great”

Instructions/User Manual/Troubleshooting1%

“Watch Brian you tube for easy instructions”

What buyers complain about

Size-Overall18%

“Did not fit as stated”

Durability15%

“Broke within 1 month”

Noise Level8%

“hardly hear anything with working great”

Quality-Overall8%

“cheap”

Assembly/Installation5%

“On install i had to modify a little bit”

Advertised Vs Actual Product5%

“It was advertised to fit my existing box but would not”

Functionality-Overall5%

“The air movement is not powerful”

Material Quality3%

“Very cheap plastic”

Ease Of Cleaning2%

“My old one was too dirty to put back in”

Strength2%

“The fan blade is a little wobbly when turned slowly by hand”

Top return reasons

Size-Overall57%
Assembly/Installation10%
Compatibility-Overall9%
Defective Material/Parts5%
Advertised Vs Actual Product5%
Functionality-Overall4%
Noise Level4%
Mechanism Issues1%
Mounting1%
Add-Ons/Attachments1%

Common questions

Is broan 678 replacement parts profitable to sell on Amazon United States?
The niche generates $45K/yr across 8 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +19.4%. Flapen's verdict: Skip it (42/100).
How competitive is the broan 678 replacement parts niche?
7 brands and 11 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in broan 678 replacement parts?
Top complaints mined from reviews: Size-Overall, Durability, Noise Level. The return rate is 5.6% — above our launch gate.
When does demand for broan 678 replacement parts peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the broan 678 replacement parts niche?
Listings span $40.25–$83.01; the average listing price is $50.54 (sweet spot $15–$100). The average incumbent carries 42 reviews — the moat a new listing must climb.