The Airmax PondSeries PS20 rates 2.2 among lake compressors pond aerators; the Airmax EcoSeries Fountain, 1/2 HP rates 2.0 among floating aerators ones. The Airmax EcoSeries Fountain, 1/2 HP costs $600 less ($1,999.99 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.
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 $2,599.99A 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 $1,999.99These 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 | Airmax PondSeries PS20 | Airmax EcoSeries Fountain, 1/2 HP |
|---|---|---|
| Overall rating | 2.2/5 | 2.0/5 |
| Value 35% | 4 $1,299.99 per rated acre ($2,599.99) | 0 $3,999.98 per horsepower ($1,999.99) |
| Output 20% | 50 airflow not published (neutral score used) | 20 0.5 HP motor |
| Efficiency 20% | 50 airflow or watts not published (neutral score used) | 50 flow or watts not published (neutral score used) |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
| Airmax PondSeries PS20 | Airmax EcoSeries Fountain, 1/2 HP | |
|---|---|---|
| Aeration | ||
| Rated for | 2 acres | 0.2 acres |
| Maximum depth | 50 ft | 6 ft |
| Minimum depth | - | 24 in |
| Power | ||
| Motor | 0.5 HP | 0.5 HP |
| Voltage | 115 V | 115 V |
| In the box | ||
| Diffusers | 1 | - |
| Power cord | - | 100 ft |
| Timer | - | Yes |
