Scott Aerator DA-20 Display Aerator
A 0.5 HP floating aerator from a maker with US support, for owners who want a unit built to stay in the water year round and are willing to pay for the warranty.
Amazon $1,919$1,919
The Scott Aerator DA-20 Display Aerator rates 2.9 among floating aerators pond aerators; the Airmax PondSeries PS20 rates 2.2 among lake compressors ones. The Scott Aerator DA-20 Display Aerator costs $680.99 less ($1,919 vs $2,599.99).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Airmax PondSeries PS20
#16 in Lake compressorsFull review
A shore-mounted diffused-aeration compressor rated for 2 acres for owners who want a US-supported brand and a weatherproof cabinet, at several times the price of generic kits.
Amazon $2,599.99$2,599.99
Scores side by side
These two sit in different type classes (floating aerators and lake compressors), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Scott Aerator DA-20 Display Aerator | Airmax PondSeries PS20 |
|---|---|---|
| Overall rating | 2.9/5 | 2.2/5 |
| Value 35% | 0 $3,838 per horsepower ($1,919) | 4 $1,299.99 per rated acre ($2,599.99) |
| Output 20% | 20 0.5 HP motor | 50 airflow not published (neutral score used) |
| Efficiency 20% | 50 flow or watts not published (neutral score used) | 50 airflow or watts not published (neutral score used) |
| Warranty 25% | 100 5-year warranty | 0 warranty not published, scored as none |
Specifications
| Scott Aerator DA-20 Display Aerator | Airmax PondSeries PS20 | |
|---|---|---|
| Aeration | ||
| Rated for | - | 2 acres |
| Maximum depth | - | 50 ft |
| Water flow | 18,000 gal/h | - |
| Power | ||
| Motor | 0.5 HP | 0.5 HP |
| Running amps | 8 A | - |
| Voltage | 115 V | 115 V |
| In the box | ||
| Diffusers | - | 1 |
| Power cord | 70 ft | - |
| Build | ||
| Warranty | 5 years | - |