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 is the better pond aerator overall, rated 2.9 to 2.3. The Scott Aerator DA-20 Display Aerator leads on warranty. The Kasco 3/4 HP Surface Aerator wins on output. The Kasco 3/4 HP Surface Aerator costs $298 less ($1,621 vs $1,919).
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.
Kasco 3/4 HP Surface Aerator
A 0.75 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 $1,621$1,621
Which should you buy?
- Choose the Scott Aerator DA-20 Display Aerator for warranty (5-year warranty vs 2-year warranty).
- Choose the Kasco 3/4 HP Surface Aerator for output (0.8 HP motor vs 0.5 HP motor).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every floating aerators pond aerator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Scott Aerator DA-20 Display Aerator | Kasco 3/4 HP Surface Aerator |
|---|---|---|
| Overall rating | 2.9/5 | 2.3/5 |
| Value 35% | 0 $3,838 per horsepower ($1,919) | 0 $2,161.33 per horsepower ($1,621) |
| Output 20% | 20 0.5 HP motor | 40 0.8 HP motor |
| Efficiency 20% | 50 flow or watts not published (neutral score used) | 50 flow or watts not published (neutral score used) |
| Warranty 25% | 100 5-year warranty | 25 2-year warranty |
Specifications
| Scott Aerator DA-20 Display Aerator | Kasco 3/4 HP Surface Aerator | |
|---|---|---|
| Aeration | ||
| Rated for | - | 0.8 acres |
| Water flow | 18,000 gal/h | - |
| Power | ||
| Motor | 0.5 HP | 0.8 HP |
| Running amps | 8 A | - |
| Voltage | 115 V | 120 V |
| In the box | ||
| Power cord | 70 ft | 100 ft |
| Build | ||
| Warranty | 5 years | 2 years |