aprilaire 501 replacement filter
Worth a lookShows searches that convert (14.3% search→purchase), but a concentrated shelf (top 5 take 88% of clicks) keeps it on the watch list.
Conversion
Incredible14.3%search→purchase rate — share of searches ending in a sale
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great$62.94avg listing price — sweet spot $15–$100
Review moat
Great370.75avg incumbent reviews — the moat a new listing must climb
Price range
Great$45.92–$116.91cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+34.1%90-day search growth — must beat 0% to launch
Market size
Okay$148K$148K/yr · 16K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Brand share
Bad93%top-5 brand share — brand-locked demand
Competition
Bad88%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, aprilaire 501 replacement filter is a $148K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 50/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
aprilaire 501 replacement filter market data
- Units sold / yr
- 3K–3K
- avg 250–500/product
- Revenue / yr
- $157K–$189K
- units × avg price
- Conversion rate
- 14.3%
- Avg BSR
- #1,185
- Page quality
- 0%
- Prime
- 88%
- Sponsored
- 88%
- Out of stock
- 1.0%
- Avg brand age
- 40 months
- Avg seller age
- 194 days
Competition & brand share
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 rising
Sellers
25
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
88%
Top 20: 100%
Open market
4%
- Aprilaire61%
- Foglapius10%
- Senowi9%
- Curebilee9%
- DENGESON4%
- FURCIELOS4%
- Open — no brand owns it (1 brand, 4%)
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +34.1% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 1.9×
Top aprilaire 501 replacement filter search terms
- aprilaire 501 replacement filter9K/yr
- aprilaire 5013K/yr
- aprilaire 5000 replacement filter4K/yr
Top aprilaire 501 replacement 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 8 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent 16x25x6 Air Filter (Pack of 1)
Aprilaire$47.804.6★1,456 rev
AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent 16x25x6 Air Filter (Pack of 2)
Aprilaire$81.524.6★1,174 rev
2 Pack 501 Replacement Filter Compatible with Aprilaire 5000 Whole-House Air Purifier 16x25x6 Air FilterMERV15
Foglapius$45.924.1★37 rev
Senowi 2 Pack 501 Replacement Filter Compatible with Aprilaire 5000 Whole-House Air Purifier MERV-15 Equivalent Furnace Filter 16x25x6 Air Filter
Senowi$54.754.7★60 rev
501 Replacement Furnace Filter Compatible with AprilAire 5000 Whole-House Air Purifier - 16x25x6 MERV 15 Clean Air & Dust 2 Pack
Curebilee$55.044.5★168 rev
Newest
by launch date
2 Pack501 Replacement Furnace Filter Compatible with AprilAire 5000 Whole-House Air Purifier - 16x25x6 MERV 15 Clean Air & Dustincloud 2 Pleat Spacers
DENGESON$50.1647 rev
Replacement for APRILAIRE 501 REPLACEMENT MEDIA FILTER FOR MODEL 5000
ZVLHZYUL$116.911 rev
Senowi 2 Pack 501 Replacement Filter Compatible with Aprilaire 5000 Whole-House Air Purifier MERV-15 Equivalent Furnace Filter 16x25x6 Air Filter
Senowi$54.7560 rev
FURCIELOS 501 Replacement Filter Compatible with AprilAire 5000 Whole-House Air Purifier 5000 Replacement Filter 16x25x6 MERV-15 Equivalent Filter 2-Pack
FURCIELOS$51.3923 rev
2 Pack 501 Replacement Filter Compatible with Aprilaire 5000 Whole-House Air Purifier 16x25x6 Air FilterMERV15
Foglapius$45.9237 rev
Trending
90-day click momentum2 Pack501 Replacement Furnace Filter Compatible with AprilAire 5000 Whole-House Air Purifier - 16x25x6 MERV 15 Clean Air & Dustincloud 2 Pleat Spacers
DENGESON$50.164.8★
2 Pack 501 Replacement Filter Compatible with Aprilaire 5000 Whole-House Air Purifier 16x25x6 Air FilterMERV15
Foglapius$45.924.1★
AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent 16x25x6 Air Filter (Pack of 2)
Aprilaire$81.524.6★
Replacement for APRILAIRE 501 REPLACEMENT MEDIA FILTER FOR MODEL 5000
ZVLHZYUL$116.915.0★
AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent 16x25x6 Air Filter (Pack of 1)
Aprilaire$47.804.6★
What buyers say about aprilaire 501 replacement filter
What buyers praise and complain about, mined from review topics.What buyers love
“The fit is pretty close to original”
“Quality filters delivered quickly”
“Easy to install”
“The build quality seems good”
“these are a solid alternative to the more expensive name-brand ones”
“they work”
“we realized it was pretty easy”
“Works well”
“A good fitting lighter weight replacement filter that will take more time”
“the material seems equivalent to the original”
What buyers complain about
“But last time I got a defective filter”
“effort to install”
“Seems the quality control has gone downhill”
“Filter material: is nowhere near as thick as a genuine filter”
“Getting them in can be a little awkward if youre doing it solo”
Top return reasons
Common questions
- Is aprilaire 501 replacement filter profitable to sell on Amazon United States?
- The niche generates $148K/yr across 8 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +34.1%. Flapen's verdict: Worth a look (50/100).
- How competitive is the aprilaire 501 replacement filter niche?
- 7 brands and 25 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in aprilaire 501 replacement filter?
- Top complaints mined from reviews: Filtration, Assembly/Installation, Quality-Overall. The return rate is 1.3%.
- When does demand for aprilaire 501 replacement filter peak?
- Demand peaks in Oct–Nov; the busiest month runs 1.9× the quietest.
- What does it cost to enter the aprilaire 501 replacement filter niche?
- Listings span $45.92–$116.91; the average listing price is $62.94 (sweet spot $15–$100). The average incumbent carries 371 reviews — the moat a new listing must climb.