A shore-mounted diffused-aeration compressor rated for 3 acres for buyers who will buy their own tubing and diffusers and want the motor at the lowest price.
Amazon $359.99The AZZUNOX 3/4 HP Pond Aerator, 8.2 CFM rates 3.8 among lake compressors pond aerators; the Kasco 3/4 HP Surface Aerator rates 2.3 among floating aerators ones. The AZZUNOX 3/4 HP Pond Aerator, 8.2 CFM costs $1,261.01 less ($359.99 vs $1,621).
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.

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 $1,621Scores side by side
These two sit in different type classes (lake compressors and floating aerators), 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 | AZZUNOX 3/4 HP Pond Aerator, 8.2 CFM | Kasco 3/4 HP Surface Aerator |
|---|---|---|
| Overall rating | 3.8/5 | 2.3/5 |
| Value 35% | 70 $120 per rated acre ($359.99) | 0 $2,161.33 per horsepower ($1,621) |
| Output 20% | 100 8.2 CFM of air | 40 0.8 HP motor |
| Efficiency 20% | 100 1.5 CFM per 100 W | 50 flow or watts not published (neutral score used) |
| Warranty 25% | 0 warranty not published, scored as none | 25 2-year warranty |
Specifications
| AZZUNOX 3/4 HP Pond Aerator, 8.2 CFM | Kasco 3/4 HP Surface Aerator | |
|---|---|---|
| Aeration | ||
| Rated for | 3 acres | 0.8 acres |
| Maximum depth | 50 ft | - |
| Airflow | 8.2 CFM | - |
| Power | ||
| Motor | 0.8 HP, 550 W | 0.8 HP |
| Voltage | - | 120 V |
| Noise | 60 dB | - |
| In the box | ||
| Diffusers | None | - |
| Power cord | - | 100 ft |
| Timer | Yes | - |
| Build | ||
| Warranty | - | 2 years |