Skip to content
FlapenGet started
43

17.5x17.5x1 air filter

Skip it

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

Market size 15Growth 59Conversion 95Competition 2Returns 96Price range 95Avg price 95Brand share 0Review moat 21Quality gap 21

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Conversion

Incredible12.8%

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

Avg price

Incredible$45.05

avg listing price — sweet spot $15–$100

Price range

Incredible$36.43–$57.82

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

Growth

Good+34.6%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad11,171.83

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$60K

$60K/yr · 10K searches

Competition

Bad98%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, 17.5x17.5x1 air filter is a $60K/yr Amazon United States market (10K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jul. Verdict: Skip it — 43/100.

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

17.5x17.5x1 air filter market data

Units sold / yr
2K–2K
avg 100–250/product
Revenue / yr
$68K–$90K
units × avg price
Conversion rate
12.8%
Avg BSR
#62
Page quality
0%
Prime
33%
Sponsored
83%
Out of stock
9.6%
Avg brand age
81 months
Avg seller age
207 days

Competition & brand share

The top 5 products capture 98% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 falling

Sellers

7

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

98%

Top 20: 100%

Open market

0%

  • Filter King55%
  • Filtrete43%
  • Simply2%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 60 weeks — +34.6% search growth over the last 90 days.
400300Spike '25Spike '26Prime Day '26JunJulAugSepOctNovDecJanFebMarAprMayJunJul

Peak months: Jul · busiest ÷ quietest = 2.1×

Open Trend

Top 17.5x17.5x1 air 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.

0%15%$9K30%$18K45%$27K60%$36K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share
1
Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete$43.804.7★6,265 rev

2
Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$47.754.7★961 rev

3
Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$38.514.7★1,771 rev

4
Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$45.984.7★4,436 rev

5
Filter King 17.5x17.5x1 Air Filter (MERV 13) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 13) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$57.824.5★235 rev

Newest

by launch date
Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete$43.806,265 rev

2y ago
Filter King 17.5x17.5x1 Air Filter (MERV 13) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 13) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$57.82235 rev

2y ago
Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$47.75961 rev

3y ago
Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$38.511,771 rev

3y ago
Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$45.984,436 rev

3y ago

Trending

90-day click momentum
Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (5-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$47.754.7★

▲ 44%
Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete 17.5x17.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.19 x 17.19 x 0.81 in)

Filtrete$43.804.7★

— 6%
Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$45.984.7★

— 1%
Simply 18x18x1 Air Filter Merv 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 17.75x17.75x0.75) DUST Pet & Allergy Control

Simply 18x18x1 Air Filter Merv 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 17.75x17.75x0.75) DUST Pet & Allergy Control

Simply$36.434.7★

▼ 19%
Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King 17.5x17.5x1 Air Filter (MERV 8) (3-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 17.5 x .75)

Filter King$38.514.7★

▼ 37%

What buyers say about 17.5x17.5x1 air filter

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

What buyers love

Size-Overall35%

“Sized accurately”

Filtration18%

“Great filters”

Advertised Vs Actual Product10%

“Works as it should”

Quality-Overall7%

“Better quality and stronger design”

Pet Friendly5%

“dog fur well”

Water Flow5%

“Good airflow through the filter”

What buyers complain about

Size-Overall33%

“NOT a true size”

Value For Money11%

“good overall, could be a bit cheaper”

Ease Of Cleaning11%

“if the filtter is real dirty then I toss it”

Thickness11%

“A little too thin”

Top return reasons

Size-Overall85%
Compatibility-Overall8%
Maintenance And Repair3%
Value For Money3%
Filtration3%
Advertised Vs Actual Product3%

Common questions

Is 17.5x17.5x1 air filter profitable to sell on Amazon United States?
The niche generates $60K/yr across 6 tracked products. 90-day search growth is +34.6%. Flapen's verdict: Skip it (43/100).
How competitive is the 17.5x17.5x1 air filter niche?
3 brands and 7 sellers compete. The top 5 products take 98% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in 17.5x17.5x1 air filter?
Top complaints mined from reviews: Size-Overall, Value For Money, Ease Of Cleaning. The return rate is 0.9%.
When does demand for 17.5x17.5x1 air filter peak?
Demand peaks in Jul; the busiest month runs 2.1× the quietest.
What does it cost to enter the 17.5x17.5x1 air filter niche?
Listings span $36.43–$57.82; the average listing price is $45.05 (sweet spot $15–$100). The average incumbent carries 11,172 reviews — the moat a new listing must climb.