Is x6673 lennox 20x25x5 merv 11 filter profitable to sell on Amazon United States?

The niche generates $417K/yr across 10 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +29.6%. Flapen's verdict: Skip it (48/100).

How competitive is the x6673 lennox 20x25x5 merv 11 filter niche?

5 brands and 24 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in x6673 lennox 20x25x5 merv 11 filter?

Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Quality-Overall. The return rate is 1.0%.

When does demand for x6673 lennox 20x25x5 merv 11 filter peak?

Demand peaks in Sep–Dec; the busiest month runs 6.3× the quietest.

What does it cost to enter the x6673 lennox 20x25x5 merv 11 filter niche?

Listings span $39.42–$210.17; the average listing price is $93.46 (sweet spot $15–$100). The average incumbent carries 1,116 reviews — the moat a new listing must climb.

x6673 lennox 20x25x5 merv 11 filter

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible1.0%

return rate — above 5% kills the launch gate

Conversion

Great11.8%

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

Avg price

Great$93.46

avg listing price — sweet spot $15–$100

Review moat

Good1,116.4

avg incumbent reviews — the moat a new listing must climb

Market size

Good$417K

$417K/yr · 38K searches

Growth

Good+29.6%

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

Price range

Okay$39.42–$210.17

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad85%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, x6673 lennox 20x25x5 merv 11 filter is a $417K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Sep–Dec. Verdict: Skip it — 48/100.

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

x6673 lennox 20x25x5 merv 11 filter market data

Units sold / yr: 5K–6K; avg 250–500/product
Revenue / yr: $467K–$561K; units × avg price
Conversion rate: 11.8%
Avg BSR: #196
Page quality: 0%
Prime: 20%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 44 months
Avg seller age: 181 days

Competition & brand share

The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

85%

Top 20: 100%

Open market

HEALTHY CLIMATE63%
Lennox25%
Filtrete7%
Pitymody3%
AirPurete3%

Demand & seasonality

Weekly Amazon search volume, last 67 weeks — +29.6% search growth over the last 90 days.

Peak months: Sep, Dec · busiest ÷ quietest = 6.3×

Open Trend

Top x6673 lennox 20x25x5 merv 11 filter search terms

lennox 20x25x5 air filter12K/yr +50.7%4.7% conv.
x6673 lennox 20x25x5 merv 11 filter9K/yr +24.5%14.9% conv.
x66736K/yr +25.4%10.6% conv.
healthy climate solutions filter 20x25x56K/yr +15.1%11.9% conv.
lennox x66734K/yr +8.0%10.7% conv.

All search terms

Top x6673 lennox 20x25x5 merv 11 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 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Lennox X6673 20x25x5 Air Filter MERV 11 HVAC AC Furnace Filters Lennox Healthy Climate Filter for Home with Cleaning Cloth 2-Pack (Actual Size: 19.75 x 24.75 x 4.38 Inches)

HEALTHY CLIMATE$65.234.6★105 rev

Lennox X6673 Healthy Climate HCF20-11 MERV 11 Filter Media (2 Pack)

Lennox$66.224.8★5,072 rev

Filtrete 20x25x5 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 19.63 x 24.75 x 4.31 in)

Filtrete$46.524.6★2,304 rev

Lennox X6675 20x25x5 Air Filter Lennox Healthy Climate Carbon Clean Merv 16 Home Furnace Filter for HVAC system 2 Pack with Cleaning Cloth

HEALTHY CLIMATE$210.174.8★411 rev

Lennox X6675 20x25x5 Healthy Climate Carbon-Clean MERV 16 Filter Bundle with Same Day Supply Filter Change Reminder Magnet (1-Pack)

Lennox$113.904.8★855 rev

Newest

by launch date

Lennox Healthy Climate X6673-20 x 25 x 5 Healthy Climate HCF20-11 Air Filter MERV 11 Filter Bundle with Same Day Supply Filter Change Reminder Magnet (2-Pack)

HEALTHY CLIMATE$65.5742 rev

8mo ago

Lennox Healthy Climate X6673-20 x 25 x 5 Healthy Climate HCF20-11 Air Filter MERV 11 Filter Bundle with Same Day Supply Filter Change Reminder Magnet (4)

HEALTHY CLIMATE$118.3942 rev

8mo ago

Lennox X6673 20x25x5 Air Filter MERV 11 HVAC AC Furnace Filters Lennox Healthy Climate Filter for Home with Cleaning Cloth 2-Pack (Actual Size: 19.75 x 24.75 x 4.38 Inches)

HEALTHY CLIMATE$65.23105 rev

11mo ago

Pitymody X6675 Merv 16 Air Filter 20x25x5 Efficient Air Filter Compatible with Lennox X6675 and Lennox HCC20-28 Furnace HVAC System Part Number HCF20-16 2 Pack

Pitymody$112.44313 rev

2y ago

Filtrete 20x25x5 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 19.63 x 24.75 x 4.31 in)

Filtrete$46.522,304 rev

3y ago

What buyers say about x6673 lennox 20x25x5 merv 11 filter

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

What buyers love

Filtration27%

“Excellent Filters”

Size-Overall21%

“Fits great”

Value For Money19%

“Best price”

Quality-Overall14%

“Excellent Quality”

Advertised Vs Actual Product5%

“just as advertised”

Efficiency4%

“Works beautifully”

Assembly/Installation3%

“Easy to install”

Ease Of Use2%

“Quick and easy”

Strength1%

“Seems effective”

Allergies1%

“have had no issues with allergens”

What buyers complain about

Size-Overall54%

“Didn't fit”

Compatibility-Overall6%

“Does not fit Lennox EL296UHV”

Quality-Overall6%

“I would expect better quality assurance”

Filtration6%

“Not all filters are the same”

Value For Money5%

“just more expensive”

Thickness3%

“a bit too thin”

Measurement/Reading Accuracy2%

“O. Don't buy this its not a true 20x25x5 clearly they don't haven't measured this”

Ease Of Use2%

“I have trouble getting the door to close”

Drainage2%

“Money down the drain”

Strength2%

“They still are flimsy”

Top return reasons

Size-Overall69%

Filtration16%

Compatibility-Overall8%

Value For Money2%

Advertised Vs Actual Product2%

Defective Material/Parts1%

Functionality-Overall1%

Product Condition1%

Ease Of Use0%

Maintenance And Repair0%

Common questions

Is x6673 lennox 20x25x5 merv 11 filter profitable to sell on Amazon United States?: The niche generates $417K/yr across 10 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +29.6%. Flapen's verdict: Skip it (48/100).
How competitive is the x6673 lennox 20x25x5 merv 11 filter niche?: 5 brands and 24 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in x6673 lennox 20x25x5 merv 11 filter?: Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Quality-Overall. The return rate is 1.0%.
When does demand for x6673 lennox 20x25x5 merv 11 filter peak?: Demand peaks in Sep–Dec; the busiest month runs 6.3× the quietest.
What does it cost to enter the x6673 lennox 20x25x5 merv 11 filter niche?: Listings span $39.42–$210.17; the average listing price is $93.46 (sweet spot $15–$100). The average incumbent carries 1,116 reviews — the moat a new listing must climb.