4 inch duct
Skip it44/100a small market ($261K/yr) — 4 inch duct doesn't clear our bar today.
Market/yr
$261K
Growth (1y)
+113.5%
Products
28
Brands
20
was 16 a year ago
Sellers
51
Price range
$6.21–$96.77
Returns
3.3%
Rating
4.6★
Skip it
Scored 44/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 104 weeks — +113.5% year over year.Seasonality
Monthly demand index across the year — 1.00 is average.No pronounced peak months · busiest ÷ quietest = 1.2×
Competition
- AC Infinity22%
- VIVOSUN19%
- TEAIERXY17%
- Hon&Guan14%
- iPower4%
- YIJUHOU4%
- Other (14 brands)20%
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them. 20 brands and 51 sellers compete here.
Brands
20 rising
was 16 a year ago
Sellers
51
Top 5 brand share
77%
Product shelf
All 28 tracked products in this niche.
Hon&Guan Dryer Vent Hose 4 Flexible Duct 16FT with 2 Duct Clamps Heavy-Duty Three Layer Protection Black PVC for HVAC Ventilation Duct Fan Systems
Hon&Guan
$16.684.3★8,840 reviews
TEAIERXY 4 Inch 8 Feet Dryer Vent Hose Flexible Insulated Air Ducting Vent Hose PVC Aluminum Foil with 2 Clamps for HVAC Ventilation(Black)
TEAIERXY
$8.934.6★980 reviews
AC Infinity Flexible 4-Inch Aluminum Ducting Heavy-Duty Four-Layer Protection 8-Feet Long for Heating Cooling Ventilation and Exhaust
AC Infinity
$12.934.6★19,450 reviews
VIVOSUN 4 Flexible Aluminum Duct 25 FT Long Heavy-Duty Multi-Layer Air Hose for HVAC Ventilation Dryer Vent Hose for Grow Tents and Duct Fan Systems 2 Clamps Included
VIVOSUN
$20.144.6★7,108 reviews
AC Infinity Flexible 4-Inch Aluminum Ducting Heavy-Duty Four-Layer Protection 25-Feet Long for Heating Cooling Ventilation and Exhaust
AC Infinity
$21.734.7★16,584 reviews
VIVOSUN 4 Inch Flexible Aluminum Ducting 25 Feet Long Flex Air Duct with 2 Clamps Heavy-Duty Multi-Layer Dryer Hose Vent Kit for Heating Cooling Ventilation and Exhaust
VIVOSUN
$19.884.6★7,108 reviews
TEAIERXY 4 Inch 8FT Dryer Vent Hose Flexible Insulated Air Ducting Vent Hose PVC Aluminum Foil with 2 Clamps for HVAC Ventilation(Grey)
TEAIERXY
$9.074.7★4,387 reviews
iPower Flexible 4 Inch 8 Feet Aluminum Ducting 4 Layer Protection Dryer Vent Hose for HVAC Heating Cooling Ventilation and Exhaust 2 Clamps Included Black
iPower
$6.974.6★5,010 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent high-quality kit”
“As described”
“Fit perfect”
“Good buy”
“Durable and affordable”
“Easy Peasy”
“Easy to install and sturdy”
“I installed it in minutes”
“Material is sturdy”
“Seems to do the job well”
What buyers complain about
“the other size was too big”
“NOT original ac infinity quality”
“Not as thick and easily punctured”
“this is very cheap material”
“Not as described”
“It ripped two days after installing it”
“It's also not very sturdy feeling”
“it woeked”
“Both screws came out and dont work”
“.cant even install it”
Top return reasons
- Size-Overall62%
- Compatibility-Overall6%
- Advertised Vs Actual Product5%
- Value For Money5%
- Functionality-Overall4%
- Material Quality3%
- Quality-Overall2%
- Defective Material/Parts2%
- Assembly/Installation1%
- Strength1%