Is 16x25x5 furnace filter profitable to sell on Amazon United States?

The niche generates $2.2M/yr across 12 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.1%. Flapen's verdict: Worth a look (53/100).

How competitive is the 16x25x5 furnace filter niche?

6 brands and 35 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 98% of demand.

What do buyers complain about in 16x25x5 furnace filter?

Top complaints mined from reviews: Size-Overall, Filtration, Thickness. The return rate is 1.2%.

When does demand for 16x25x5 furnace filter peak?

Demand peaks in Oct; the busiest month runs 2.1× the quietest.

What does it cost to enter the 16x25x5 furnace filter niche?

Listings span $29.09–$84.51; the average listing price is $56.41 (sweet spot $15–$100). The average incumbent carries 3,921 reviews — the moat a new listing must climb.

16x25x5 furnace filter

Worth a look

Shows a $2.2M/yr market, but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.

Market size

Incredible$2.2M

$2.2M/yr · 347K searches

Price range

Incredible$29.09–$84.51

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

Conversion

Great11.4%

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

Avg price

Great$56.41

avg listing price — sweet spot $15–$100

Returns

Great1.2%

return rate — above 5% kills the launch gate

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,920.67

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+0.1%

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

Competition

Bad78%

top-5 click share — a locked-up shelf

Brand share

Bad98%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, 16x25x5 furnace filter is a $2.2M/yr Amazon United States market (347K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Oct. Verdict: Worth a look — 53/100.

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

16x25x5 furnace filter market data

Units sold / yr: 30K–40K; avg 4,000–5,000/product
Revenue / yr: $1.7M–$2.3M; units × avg price
Conversion rate: 11.4%
Avg BSR: #265
Page quality: 0%
Prime: 50%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 61 months
Avg seller age: 171 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 rising

Sellers

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

Filtrete41%
Filterbuy34%
AIRx Filters12%
Nordic Pure8%
Lennox3%
HEALTHY CLIMATE2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +0.1% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 2.1×

Open Trend

Top 16x25x5 furnace filter search terms

16x25x5 furnace filter130K/yr -16.8%11.2% conv.
16x25x5 air filter85K/yr -3.2%11.0% conv.
16x25x519K/yr +29.3%9.9% conv.
air filter 16x25x517K/yr +18.4%13.6% conv.
furnace filters 16x25x520K/yr -0.1%9.0% conv.
furnace filter 16x25x513K/yr -9.0%11.9% conv.
16 x 25 x 5 furnace filter11K/yr -5.4%11.0% conv.
16x25x5 filter7K/yr +38.2%10.3% conv.
merv 11 16x25x58K/yr +41.9%11.7% conv.
16x25x5 merv 115K/yr +47.1%10.2% conv.

All search terms

Top 16x25x5 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 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Filtrete 16x25x5 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 15.63x24.74x4.31 in)

Filtrete$47.854.6★1,680 rev

Filterbuy 16x25x5 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1029 Lennox X6670 and More (Actual Size: 15.75 x 24.75 x 4.38)

Filterbuy$48.644.6★19,747 rev

Filtrete 16x25x5 AC Furnace Air Filter MPR 1550 MERV 12 Fits Honeywell & Trion AirBear CERTIFIED Asthma & Allergy Friendly Electrostatic Air Filter 1-Pack (actual size 15.75 x 24.13 x 4.88)

Filtrete$29.094.3★5,197 rev

Filterbuy 16x25x5 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1029 Lennox X6670 and More (Actual Size: 15.75 x 24.75 x 4.38)

Filterbuy$59.914.6★13,433 rev

Nordic Pure 16x25x5 (15_3/4 x 24_3/4 x 4_3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack

Nordic Pure$53.284.7★3,523 rev

Newest

by launch date

Lennox X6670 16x25x5 Air Filter MERV 11 HVAC AC Furnace Filters Lennox Healthy Climate Filter for Home with Cleaning Cloth 2-Pack (Actual Size: 15.75 x 24.75 x 4.38 Inches)

HEALTHY CLIMATE$59.2057 rev

9mo ago

Filtrete 16x25x5 AC Furnace Air Filter MERV 13 MPR 1900 Premium Allergen Bacteria & Virus Filter Electrostatic Air Cleaning Filter 2-Pack (Actual Size 15.75 x 24.13 x 4.88 in)

Filtrete$73.09379 rev

1y ago

AIRX FILTERS WICKED CLEAN AIR. 16x25x5 Air Filter MERV 11 Compatible with Lennox X6670 Air Filter 2 Pack

AIRx Filters$48.7793 rev

2y ago

Filtrete 16x25x5 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 15.63x24.74x4.31 in)

Filtrete$47.851,680 rev

3y ago

AIRX FILTERS WICKED CLEAN AIR. Compatible/Replacement for 16x25x5 MERV 11 HVAC AC Furnace Air Filter Honeywell FC100A1029 CF200A1008 CF200D1625 Allergy 4-Pack Made in the USA

AIRx Filters$84.51213 rev

7y ago

What buyers say about 16x25x5 furnace filter

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

What buyers love

Filtration24%

“Good Filtration performance”

Size-Overall24%

“Fit well”

Quality-Overall14%

“Great product and works as intended”

Value For Money13%

“Fair price”

Advertised Vs Actual Product9%

“As advertised”

Assembly/Installation3%

“easy to install”

Ease Of Use2%

“Easy to use and very efficient”

Strength2%

“Always reliable”

Allergies1%

“Furnace filters - hopefully the clean filters will help with my allergies”

Maintenance And Repair1%

“Likenthe fact that they do not have to be changed frequently”

What buyers complain about

Size-Overall45%

“Slightly too big”

Filtration13%

“The air filter is of poor quality”

Thickness12%

“the Lennox X6670 filter was too thin to fit snugly into the MAC 1400 system”

Quality-Overall7%

“Poor Quality”

Compatibility-Overall5%

“It is not compatible”

Value For Money4%

“they are also MUCH more expensive”

Adhesion/Stickiness2%

“no glue to hold it”

Strength1%

“A little flimsy”

Measurement/Reading Accuracy1%

“Measurements not accurate”

Ease Of Use1%

“when removing they are difficult to remove”

Top return reasons

Size-Overall68%

Filtration16%

Compatibility-Overall9%

Advertised Vs Actual Product2%

Value For Money1%

Defective Material/Parts1%

Thickness1%

Certifications0%

Quality-Overall0%

Functionality-Overall0%

Common questions

Is 16x25x5 furnace filter profitable to sell on Amazon United States?: The niche generates $2.2M/yr across 12 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.1%. Flapen's verdict: Worth a look (53/100).
How competitive is the 16x25x5 furnace filter niche?: 6 brands and 35 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 98% of demand.
What do buyers complain about in 16x25x5 furnace filter?: Top complaints mined from reviews: Size-Overall, Filtration, Thickness. The return rate is 1.2%.
When does demand for 16x25x5 furnace filter peak?: Demand peaks in Oct; the busiest month runs 2.1× the quietest.
What does it cost to enter the 16x25x5 furnace filter niche?: Listings span $29.09–$84.51; the average listing price is $56.41 (sweet spot $15–$100). The average incumbent carries 3,921 reviews — the moat a new listing must climb.