---
title: "Pdm28 Spa Filter — $37K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/pdm28-spa-filter"
last_updated: "2026-08-11T01:36:02.792Z"
locale: en
meta:
description: "Niche score 49/100 · $37K/yr market · 7K searches/yr · $27.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $37K/yr market · 7K searches/yr · $27.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Pdm28 Spa Filter — $37K/yr Amazon US Niche (2026) - Flapen"
---
# **pdm28 spa filter**
**Skip it**
A small market ($37K/yr) — this niche doesn't clear our bar today.
Market size 9Growth 46Conversion 100Competition 16Returns 93Price range 95Avg price 95Brand share 36Review moat 89Quality gap 14
**Conversion**
**Incredible****19.6%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$27.92**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.89–$45.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****223.5**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+16.6%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$37K**
$37K/yr · 7K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, pdm28 spa filter is a $37K/yr Amazon United States market (7K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Apr–May. Verdict: Skip it — 49/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pdm28 spa filter market data**
- **Units sold / yr**
- **1K–1K**
- avg 100–250/product
- **Revenue / yr**
- **$28K–$35K**
- units × avg price
- **Conversion rate**
- **19.6%**
- **Avg BSR**
- **#2,392**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **209 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▲rising
**Sellers**
**13**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**13%**
- Chryseos38% - Mamokin21% - Wowreed13% - POOLPURE6% - LBLVBNEWD6% - Cryspool4% - Open — no brand owns it (5 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +16.6% search growth over the last 90 days.
200150Spike '24Black Friday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/pdm28-spa-filter/trend)
## **Top pdm28 spa filter search terms**
- **aquarest spa filter**4K/yr+4.6%13.3% conv. - **pdm28 spa filter**3K/yr+26.8%18.2% conv. - **pleatco pdm28**427/yr+73.6%21.9% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/pdm28-spa-filter/search-terms)
## **Top pdm28 spa 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%10%$4K20%$7K30%$11K40%$15K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Chryseos Spa Filter Compatible with PDM28 461273 FC-9944 SD-01392 AquaRest Dream Maker hot tub Filter 28 sq. ft. 2 Pack**Chryseos**$28.35**4.8★168 rev](https://www.amazon.com/dp/B0CF4VL8YH) [2**Mamokin PDM28 Spa Filter Replacement Aquarest Dream Maker 461273 Hot Tub Filter FC9944 FC-9944 cartridges 2 Pack**Mamokin**$28.34**4.7★220 rev](https://www.amazon.com/dp/B0BKVK61TM) [3**Wowreed Spa Filter Compatible with PDM28 461273 2015 & Newer AquaRest DreamMaker Cottage Collection Models(not Oval end) 1 Pack**Wowreed**$17.62**4.8★203 rev](https://www.amazon.com/dp/B0BP1H3MVV) [4**PDM28 Hot Tub Spa Filter Replacement for Aquarest Dream Maker 461273 Hot Tub Filter FC-9944 FC-9944 Cartridges Spa Filter 28 Sq. Ft (2 Pack)**LBLVBNEWD**$25.85**4.8★13 rev](https://www.amazon.com/dp/B0GGM5G3Z5) [5**POOLPURE PDM28 Spa Filter Replaces 461273 FC-9944 SD-01392 AquaRest Dream Maker Hot Tub Filter 28 sq. ft. 1Pack**POOLPURE**$19.52**4.7★790 rev](https://www.amazon.com/dp/B08PZBX5XK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**PDM28 Hot Tub Spa Filter Replacement for Aquarest Dream Maker 461273 Hot Tub Filter FC-9944 FC-9944 Cartridges Spa Filter 28 Sq. Ft (2 Pack)**LBLVBNEWD**$25.85**13 rev6mo ago](https://www.amazon.com/dp/B0GGM5G3Z5) [**StreytoTek 4 Pcs PDM28 Spa Filter Compatible with Dream Maker Hot Tub**StreytoTek**$45.08**2 rev6mo ago](https://www.amazon.com/dp/B0GGR4RFVV) [**Niantime PDM28 Hot Tub Spa Filter Replacement for Aquarest Dream Maker 461273 FC-9944 Spa Filter 28 Sq. Ft 2 Pack PDM28 Spa Filter**Niantime**$25.78**17 rev1y ago](https://www.amazon.com/dp/B0FCLXPSN6) [**AQUALTRA Spa Filter Replacement for PDM28 Compatible with Dream Maker 461273 FC9944 FC-9944 Cartridges SD-01392 28 sq.ft. 5 1/2 x 7 1/4 Drop in Hot Tub Filter 2 Pack**AQUALTRA**$28.49**60 rev2y ago](https://www.amazon.com/dp/B0CRB3PM7Y) [**Chryseos Spa Filter Compatible with PDM28 461273 FC-9944 SD-01392 AquaRest Dream Maker hot tub Filter 28 sq. ft. 2 Pack**Chryseos**$28.35**168 rev2y ago](https://www.amazon.com/dp/B0CF4VL8YH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**PDM28 Hot Tub Spa Filter Replacement for Aquarest Dream Maker 461273 Hot Tub Filter FC-9944 FC-9944 Cartridges Spa Filter 28 Sq. Ft (2 Pack)**LBLVBNEWD**$25.85**4.8★**▲ 262%**](https://www.amazon.com/dp/B0GGM5G3Z5) [**StreytoTek 4 Pcs PDM28 Spa Filter Compatible with Dream Maker Hot Tub**StreytoTek**$45.08**5.0★**▲ 223%**](https://www.amazon.com/dp/B0GGR4RFVV) [**Yoozell PDM28 Spa Filter Replaces Aquarest Dream Maker 461273 Hot Tub Filter 1 Pack**Yoozell**$15.89**4.8★**▲ 92%**](https://www.amazon.com/dp/B0BL3YRXN8) [**Cryspool PDM28 Filter Compatible with Spa Filter Aqua Crest PDM28 461273 Dream Maker 28 Sq. Ft Spa Filter Cartridge 2 Pack**Cryspool**$36.39**4.8★**▲ 61%**](https://www.amazon.com/dp/B09DY1LM2X) [**AQUALTRA Spa Filter Replacement for PDM28 Compatible with Dream Maker 461273 FC9944 FC-9944 Cartridges SD-01392 28 sq.ft. 5 1/2 x 7 1/4 Drop in Hot Tub Filter 2 Pack**AQUALTRA**$28.49**4.6★**▲ 27%**](https://www.amazon.com/dp/B0CRB3PM7Y)
**~~View all trending →~~**
## **What buyers say about pdm28 spa filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**25%
*“Excellent fit”*
**Filtration**23%
*“Great filters”*
**Value For Money**16%
*“Great Value”*
**Quality-Overall**8%
*“No complaints”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Ease Of Cleaning**3%
*“great, pretty easy to clean and get more than a single use and much cheaper than manufacture branded”*
**Design-Overall**2%
*“Solid construction, and fit”*
**Water Resistance**2%
*“Easy to change to keep your water nice and clear”*
**Material Quality**2%
*“The filter material also seems well made”*
**Spray/Flow**1%
*“all the gunk sprays away nicely”*
### **What buyers complain about **
**Value For Money**19%
*“A little expensive”*
**Ease Of Cleaning**13%
*“These do not rinse well”*
**Filtration**10%
*“I dont recommend this filter”*
**Water Resistance**4%
*“They disintegrate when you pluck them from the water so it has to be some type of glue”*
**Ease Of Use**3%
*“Some of the filters I've purchased in the past have been difficult to insert”*
**Thickness**3%
*“although the opening is extremely thin so large particles are not going to make under the pleats”*
**Hard Feel**3%
*“these feel more like hard plastic”*
**Jamming/Clogging**3%
*“The only downside is that they clog a bit faster than I expected if the hot tub gets heavy use”*
### **Top return reasons **
**Size-Overall**72%
**Filtration**11%
**Advertised Vs Actual Product**10%
**Shape/Style**6%
**Functionality-Overall**1%
**Durability**1%
**Material Quality**1%
**Defective Material/Parts**0%
## **Common questions**
- **Is pdm28 spa filter profitable to sell on Amazon United States?**
- The niche generates $37K/yr across 12 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +16.6%. Flapen's verdict: Skip it (49/100).
- **How competitive is the pdm28 spa filter niche?**
- 11 brands and 13 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in pdm28 spa filter?**
- Top complaints mined from reviews: Value For Money, Ease Of Cleaning, Filtration. The return rate is 1.1%.
- **When does demand for pdm28 spa filter peak?**
- Demand peaks in Apr–May; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the pdm28 spa filter niche?**
- Listings span $15.89–$45.08; the average listing price is $27.92 (sweet spot $15–$100). The average incumbent carries 224 reviews — the moat a new listing must climb.
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