18x30x1 air filter
Launch itA $963K/yr market growing +34.3% this quarter with returns at 0.6% — clears our launch bar.
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Price range
Incredible$26.55–$80.11cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$49.50avg listing price — sweet spot $15–$100
Conversion
Great9.7%search→purchase rate — share of searches ending in a sale
Market size
Great$963K$963K/yr · 202K searches
Growth
Good+34.3%90-day search growth — must beat 0% to launch
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad12,549.33avg incumbent reviews — the moat a new listing must climb
Brand share
Bad93%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, 18x30x1 air filter is a $963K/yr Amazon United States market (202K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jun–Jul. Verdict: Launch it — 60/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
18x30x1 air filter market data
- Units sold / yr
- 20K–25K
- avg 1,000–1,250/product
- Revenue / yr
- $990K–$1.2M
- units × avg price
- Conversion rate
- 9.7%
- Avg BSR
- #136
- Page quality
- 0%
- Prime
- 62%
- Sponsored
- 76%
- Out of stock
- 2.5%
- Avg brand age
- 59 months
- Avg seller age
- 199 days
Competition & brand share
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
19
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
57%
Top 20: 99%
Open market
5%
- Filterbuy36%
- Filtrete28%
- Filter King16%
- Simply8%
- Aerostar6%
- protectplusair2%
- Open — no brand owns it (4 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +34.3% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 1.8×
Top 18x30x1 air filter search terms
- 18x30x1 air filter99K/yr
- air filter 18x30x125K/yr
- 18x30x1 air filter 6 pack14K/yr
- 18 x 30 x 1 air filters for home14K/yr
- ac filter 18x30x19K/yr
- 18x30x16K/yr
- furnace filters 18x30x16K/yr
- 18x30x1 furnace filter6K/yr
- 18x30 air filter6K/yr
- air filters 18x30x15K/yr
Top 18x30x1 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 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Filter King 18x30x1 Air Filter (MERV 8) (6-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 29.5 x .75)
Filter King$49.934.7★2,030 rev
Filterbuy 18x30x1 Air Filter MERV 8 Essential Dust & Allergy Defense (4-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 17.75 x 29.75 x 0.75)
Filterbuy$44.854.7★2,721 rev
Filterbuy 18x30x1 Air Filter MERV 8 Essential Dust & Allergy Defense (6-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 17.75 x 29.75 x 0.75)
Filterbuy$54.304.7★51,098 rev
Filtrete 18x30x1 AC Furnace Air Filter MPR 700 MERV 8 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 17.81 x 29.81 x 0.81 in)
Filtrete$43.144.7★6,265 rev
Simply 18x30x1 Air Filter Merv 8 6 Pack For Home AC Furnace & HVAC (Actual Size: 17.75x29.75x0.75) DUST Pet & Allergy Control
Simply$49.774.7★53,363 rev
Newest
by launch date
Reair 18x30x1 Air filter Washable and Reusable Air Filter 18x30x1 for AC HVAC Furnace MERV 8 Air Filters Machine Washable & Dryer Friendly AC Furnace Air Filter
REAIR$37.101,886 rev
Filtrete 18x30x1 AC Furnace Air Filter MPR 700 MERV 8 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 2-Pack (Actual Size 17.81 x 29.81 x 0.81 in)
Filtrete$26.55740 rev
Nexiview 18x30x1 Furnace Filter-MERV8 Washable & Reusable Electrostatic Air Filter AC/HVAC Furnace Filter Permanent Air Filter Breathe Fresher Easy Install
Nexiview$28.47635 rev
Torjim 18x30x1 MERV8 Air Filter Washable & Reusable Electrostatic Filter AC/HVAC Furnace Filter Permanent Filter Breathe Fresher Easy Install
Torjim$34.561,019 rev
Simply 18x30x1 Air Filter MERV 8 12 Pack For Home AC Furnace & HVAC (Actual Size: 17.75x29.75x0.75) DUST Pet & Allergy Control
Simply$80.11491 rev
Trending
90-day click momentumSimply 18x30x1 Air Filter MERV 8 12 Pack For Home AC Furnace & HVAC (Actual Size: 17.75x29.75x0.75) DUST Pet & Allergy Control
Simply$80.114.7★
Filter King 18x30x1 Air Filter (MERV 8) (2-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 29.5 x .75)
Filter King$37.874.8★
Filter King 18x30x1 Air Filter (MERV 8) (6-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 17.5 x 29.5 x .75)
Filter King$49.934.7★
Aerostar 18x30x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 4 Pack (Actual Size: 17 1/2 x 19 1/2 x 3/4)
Aerostar$38.814.7★
Nexiview 18x30x1 Furnace Filter-MERV8 Washable & Reusable Electrostatic Air Filter AC/HVAC Furnace Filter Permanent Air Filter Breathe Fresher Easy Install
Nexiview$28.474.4★
What buyers say about 18x30x1 air filter
What buyers praise and complain about, mined from review topics.What buyers love
“This filter works great”
“Good quality, easy install, excellent finish and controls”
“Save money”
“Fit nicely”
“the air smells clean in my house”
“It is so convenient”
“Cleaner air”
“Easy to install”
“Works as advertised and no problems”
“Works well”
What buyers complain about
“too big to fit”
“These are terrible filters”
“These have got to be the lowest quality filters on the market”
“It did not work”
“They are not sturdy or durable”
“Not great quality - very cheap materials”
“a little difficult to install”
“They were damaged in the box and glued together”
Top return reasons
Common questions
- Is 18x30x1 air filter profitable to sell on Amazon United States?
- The niche generates $963K/yr across 21 tracked products. 90-day search growth is +34.3%. Flapen's verdict: Launch it (60/100).
- How competitive is the 18x30x1 air filter niche?
- 10 brands and 19 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in 18x30x1 air filter?
- Top complaints mined from reviews: Size-Overall, Filtration, Quality-Overall. The return rate is 0.6%.
- When does demand for 18x30x1 air filter peak?
- Demand peaks in Jun–Jul; the busiest month runs 1.8× the quietest.
- What does it cost to enter the 18x30x1 air filter niche?
- Listings span $26.55–$80.11; the average listing price is $49.50 (sweet spot $15–$100). The average incumbent carries 12,549 reviews — the moat a new listing must climb.