16x18x1 air filter
Skip itA deep review moat (22,579 avg reviews) — this niche doesn't clear our bar today.
Avg price
Incredible$42.83avg listing price — sweet spot $15–$100
Returns
Great1.1%return rate — above 5% kills the launch gate
Price range
Great$12.26–$83.88cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great8.0%search→purchase rate — share of searches ending in a sale
Growth
Good+34.5%90-day search growth — must beat 0% to launch
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$62K$62K/yr · 18K searches
Competition
Bad81%top-5 click share — a locked-up shelf
Review moat
Bad22,578.58avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, 16x18x1 air filter is a $62K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jun–Jul. Verdict: Skip it — 46/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
16x18x1 air filter market data
- Units sold / yr
- 2K–2K
- avg 100–250/product
- Revenue / yr
- $64K–$86K
- units × avg price
- Conversion rate
- 8.0%
- Avg BSR
- #715
- Page quality
- 0%
- Prime
- 50%
- Sponsored
- 75%
- Out of stock
- 0.7%
- Avg brand age
- 73 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
11
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
81%
Top 20: 100%
Open market
7%
- Filtrete39%
- AIRx Filters21%
- Filterbuy16%
- Simply7%
- Filter King6%
- SpiroPure5%
- Open — no brand owns it (2 brands, 7%)
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +34.5% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 1.9×
Top 16x18x1 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.
All 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Filtrete 16x18x1 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 15.687 x 17.687 x 0.81 in)
Filtrete$42.164.7★6,265 rev
AIRX Filters 16x18x1 Air Furnace Filter MERV 11 Allergy Dust Pet Dander(6-Pack) Electrostatic Pleated Replacement Filter HVAC AC Filter Made in USA(Actual Size: 15.50 x 17.50 x 0.75 in)
AIRx Filters$49.554.7★267 rev
Filterbuy 16x18x1 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 17.50 x 0.75)
Filterbuy$28.444.6★68,921 rev
Filter King 16x18x1 Air Filter (MERV 8) (2-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 16 x 18 x .75)
Filter King$32.684.8★6 rev
Simply 16x20x1 Air Filter MERV 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 15.75x19.75x0.75) DUST Pet & Allergy Control
Simply$31.774.7★53,363 rev
Newest
by launch date
Disposable Air Conditioner Filter White Fiberglass Material 16X18X1 Inch HVAC Replacement
Generic$12.260 rev
Filtrete 16x18x1 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 15.687 x 17.687 x 0.81 in)
Filtrete$42.166,265 rev
AIRx Filters 16x18x1 Furnace Filter MERV 8 Pleated Replacement HVAC AC Air Filter Easy Installation for Superior Filtration and Maximum Efficiency 12-Pack
AIRx Filters$83.8846 rev
AIRX Filters 16x18x1 Air Furnace Filter MERV 11 Allergy Dust Pet Dander(6-Pack) Electrostatic Pleated Replacement Filter HVAC AC Filter Made in USA(Actual Size: 15.50 x 17.50 x 0.75 in)
AIRx Filters$49.55267 rev
Simply 16x18x1 Air Filter Merv 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 15.75x17.75x0.75) DUST Pet & Allergy Control
Simply$55.6753,363 rev
Trending
90-day click momentumSimply 16x18x1 Air Filter Merv 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 15.75x17.75x0.75) DUST Pet & Allergy Control
Simply$55.674.7★
Filter King 16x18x1 Air Filter (MERV 8) (2-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 16 x 18 x .75)
Filter King$32.684.8★
AIRX Filters 16x18x1 Air Furnace Filter MERV 11 Allergy Dust Pet Dander(6-Pack) Electrostatic Pleated Replacement Filter HVAC AC Filter Made in USA(Actual Size: 15.50 x 17.50 x 0.75 in)
AIRx Filters$49.554.7★
AIRx Filters 16x18x1 Furnace Filter MERV 8 Pleated Replacement HVAC AC Air Filter Easy Installation for Superior Filtration and Maximum Efficiency 12-Pack
AIRx Filters$83.884.6★
Amazon Basics 16x20x1 Air Filter 6-Pack MERV 8 AC Furnace Filters Allergy Control Removes Dust Lint and Pollen Electrostatic (Actual Size: 15.75 x 19.75 x 0.75)
Amazon Basics$29.024.6★
What buyers say about 16x18x1 air filter
What buyers praise and complain about, mined from review topics.What buyers love
“Best value”
“Fits well”
“This air filter works great”
“Good quality”
“As advertised”
“Basic does the job”
“Easy to install good air flow”
“It is easy to use”
“Easy installing”
“Well built and fits great”
What buyers complain about
“Too big”
“Terrible air filter”
“Very flimsy”
“Poor Quality Control”
“Too expensive”
“know that the filters that are the thickest are not the best for your furnace”
“Within a couple weeks theyre broken”
“It doesnt make the job”
“No glue around edges”
“Didnt like the filters easily bends”
Top return reasons
Common questions
- Is 16x18x1 air filter profitable to sell on Amazon United States?
- The niche generates $62K/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +34.5%. Flapen's verdict: Skip it (46/100).
- How competitive is the 16x18x1 air filter niche?
- 8 brands and 11 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in 16x18x1 air filter?
- Top complaints mined from reviews: Size-Overall, Filtration, Strength. The return rate is 1.1%.
- When does demand for 16x18x1 air filter peak?
- Demand peaks in Jun–Jul; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 16x18x1 air filter niche?
- Listings span $12.26–$83.88; the average listing price is $42.83 (sweet spot $15–$100). The average incumbent carries 22,579 reviews — the moat a new listing must climb.