Is 16x25x4 furnace filter profitable to sell on Amazon United States?

The niche generates $6.6M/yr across 16 tracked products. 90-day search growth is +8.5%. Flapen's verdict: Launch it (57/100).

How competitive is the 16x25x4 furnace filter niche?

6 brands and 40 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 99% of demand.

What do buyers complain about in 16x25x4 furnace filter?

Top complaints mined from reviews: Size-Overall, Filtration, Advertised Vs Actual Product. The return rate is 0.9%.

When does demand for 16x25x4 furnace filter peak?

Demand peaks in Oct; the busiest month runs 1.7× the quietest.

What does it cost to enter the 16x25x4 furnace filter niche?

Listings span $36.04–$90.60; the average listing price is $59.14 (sweet spot $15–$100). The average incumbent carries 12,639 reviews — the moat a new listing must climb.

16x25x4 furnace filter

Launch it

A $6.6M/yr market growing +8.5% this quarter with returns at 0.9% — clears our launch bar.

Market size

Incredible$6.6M

$6.6M/yr · 892K searches

Conversion

Incredible12.5%

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

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Price range

Incredible$36.04–$90.60

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

Avg price

Great$59.14

avg listing price — sweet spot $15–$100

Growth

Okay+8.5%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay70%

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

Review moat

Bad12,638.56

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad99%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, 16x25x4 furnace filter is a $6.6M/yr Amazon United States market (892K searches/yr). The top 5 brands hold 99% of demand. Demand peaks in Oct. Verdict: Launch it — 57/100.

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

16x25x4 furnace filter market data

Units sold / yr: 100K–125K; avg 4,000–5,000/product
Revenue / yr: $5.9M–$7.4M; units × avg price
Conversion rate: 12.5%
Avg BSR: #49
Page quality: 0%
Prime: 56%
Sponsored: 69%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 164 days

Competition & brand share

The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.

Brands

6 falling

Sellers

Top-5 brand share

99%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

Filtrete50%
Filterbuy38%
Simply7%
Nordic Pure3%
Honeywell1%
MANN+HUMMEL1%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +8.5% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 1.7×

Open Trend

Top 16x25x4 furnace filter search terms

16x25x4 furnace filter257K/yr +7.9%12.3% conv.
16x25x4 air filter195K/yr -2.6%10.3% conv.
furnace filters 16x25x4156K/yr -6.4%9.9% conv.
air filter 16x25x449K/yr +28.8%13.0% conv.
16x25x436K/yr +28.4%10.0% conv.
filtrete 16x25x430K/yr +18.3%15.4% conv.
16 x 25 x 4 air filter21K/yr +34.8%13.0% conv.
furnace filter 16x25x426K/yr +7.9%8.4% conv.
16x25x4 filter16K/yr +22.6%9.9% conv.
filter 16x25x416K/yr +19.8%12.9% conv.

All search terms

Top 16x25x4 furnace 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Filtrete 16x25x4 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox & Honeywell AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 15.88x24.56x4.31 in)

Filtrete$43.584.6★1,839 rev

Filtrete 16x25x4 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 4-Pack Fits Lennox & Honeywell AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 15.88 x 24.56 x 4.31 in)

Filtrete$71.564.6★4,889 rev

Filterbuy 16x25x4 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 15.50 x 24.50 x 3.63)

Filterbuy$43.234.6★68,921 rev

Filtrete 16x25x4 Air Filter MERV 12 MPR 1550 Certified Asthma & Allergy Friendly 2-Pack Fits Lennox & Honeywell AC Furnace HVAC Filters Pleated Electrostatic (Actual Size 15.88x24.56x4.31 in)

Filtrete$51.554.6★5,199 rev

Filterbuy 16x25x4 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 15.50 x 24.50 x 3.63)

Filterbuy$69.164.6★23,863 rev

Newest

by launch date

Simply 16x25x4 Air Filter MERV 8 2 Pack For Home AC Furnace & HVAC (Actual Size: 15.5x24.5x3.63) DUST Pet&Allergy Control

Simply$36.044,727 rev

1y ago

Simply 16x25x4 Air Filter MERV 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 15.5x24.5x3.63) DUST Pet & Allergy Control

Simply$74.8153,363 rev

1y ago

Honeywell FC100A1029 (2 Pack) - 16 x 25 x 4 Pleated Air Filter MERV 11 Bundle with Same Day Supply Filter Change Reminder

Honeywell$65.96385 rev

2y ago

MANN+HUMMEL 16x25x4 MERV 8 Pleated 4 AC Furnace Air Filter. Case of 6

MANN+HUMMEL$79.2039 rev

2y ago

Filtrete 16x25x4 AC Furnace Air Filter MPR 700 MERV 8 Fits Lennox & Honeywell Device Capture Dust Pollen & Pet Dander Electrostatic Air Cleaning Filter 2-Pack (Actual Size 15.88x24.56x4.31 in)

Filtrete$49.37428 rev

4y ago

What buyers say about 16x25x4 furnace filter

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

What buyers love

Size-Overall21%

“Fits just as it should”

Filtration21%

“The filter does a great job”

Value For Money18%

“Good Price”

Quality-Overall14%

“great quality construction”

Advertised Vs Actual Product10%

“As advertised”

Assembly/Installation2%

“Easy install”

Durability1%

“They are durable”

Ease Of Use1%

“Very convenient”

Compatibility-Overall1%

“works well for my HVAC”

Spray/Flow1%

“Better flow. Merv 8 change more frequently”

What buyers complain about

Size-Overall54%

“DOES NOT FIT”

Filtration13%

“Poor quality filter”

Advertised Vs Actual Product7%

“False Advertising”

Quality-Overall5%

“I guess thier quality control is off”

Value For Money3%

“while its cheap”

Measurement/Reading Accuracy3%

“Measurements are Wrong”

Thickness2%

“Not 4 thick”

Compatibility-Overall2%

“Do not fit Honeywell”

Ease Of Use1%

“then getting it out took quite a bit of effort”

Thin1%

“Noticeably thinner than 4inch”

Top return reasons

Size-Overall68%

Filtration15%

Compatibility-Overall7%

Value For Money3%

Advertised Vs Actual Product3%

Thickness1%

Defective Material/Parts1%

Functionality-Overall1%

Certifications0%

Maintenance And Repair0%

Common questions

Is 16x25x4 furnace filter profitable to sell on Amazon United States?: The niche generates $6.6M/yr across 16 tracked products. 90-day search growth is +8.5%. Flapen's verdict: Launch it (57/100).
How competitive is the 16x25x4 furnace filter niche?: 6 brands and 40 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 99% of demand.
What do buyers complain about in 16x25x4 furnace filter?: Top complaints mined from reviews: Size-Overall, Filtration, Advertised Vs Actual Product. The return rate is 0.9%.
When does demand for 16x25x4 furnace filter peak?: Demand peaks in Oct; the busiest month runs 1.7× the quietest.
What does it cost to enter the 16x25x4 furnace filter niche?: Listings span $36.04–$90.60; the average listing price is $59.14 (sweet spot $15–$100). The average incumbent carries 12,639 reviews — the moat a new listing must climb.