FREE SHIPPING ON ALL ORDERS OVER $99! HAVE QUESTIONS? GIVE US A CALL! 888-825-6214
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Airmax PS20 Aerator For Ponds Up To 2 Acres

$2,399.99
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Airmax Pond Aerators

Airmax PS20 Pond Aeration System

A 1/2 HP bottom-diffused aeration system that brings oxygen to ponds up to 2 acres and 50 feet deep — cleaner, clearer water in as little as 90 days.

✓ Free Shipping ✓ 10-Year Cabinet Warranty ✓ Aerates Up to 2 Acres ✓ 888-825-6214

What's Included

2 ProAir4 weighted diffusers
(2) 100 ft rolls of 3/8" weighted airline
1/2 HP SilentAir rocking piston compressor
Pressure gauge & relief valve
6 ft power cord
Weatherproof composite cabinet with cooling system

Why Aerate Your Pond?

The Airmax PS20 works from the bottom up, adding oxygen right where muck and organic debris settle. A shore-mounted compressor pushes air through two weighted diffusers on the pond floor, creating rising bubble columns that circulate the entire water column and prevent thermal stratification. With more dissolved oxygen and active natural bacteria, excess nutrients get metabolized instead of building up — leaving you with cleaner, clearer water and noticeably less muck, often within 90 days.

Key Features

🌊

Aerates Up to 2 Acres

Coverage scales with pond depth — see the sizing table below to find your range.

🤫

SilentAir Compressor

Whisper-quiet 1/2 HP rocking piston compressor with SmartStart Technology for safe pressurized restarts.

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Weatherproof Cabinet

Faux-rock composite cabinet blends into the landscape while protecting internal components — 10-year warranty.

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Flexible Installation

Install at the water's edge or up to 1/4 mile away — no electrician required with Airmax EasySet airline.

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Low Operating Cost

Runs 24/7 for as little as $33.00 per month in electricity.

📅

Results in 90 Days

Most ponds show visibly cleaner, clearer water within the first three months of continuous operation.

Aeration Coverage by Pond Depth

The deeper your pond, the more surface area the PS20 can effectively aerate:

Pond Depth Aeration Coverage
6' – 9' deep Up to 1/2 acre
9' – 12' deep Up to 1 acre
Over 12' deep Up to 2 acres

Technical Specifications

Max Pond Size Up to 2 Acres
Max Diffuser Depth 50 ft
Compressor 1/2 HP SilentAir Rocking Piston
Running Amps 4.1A (115V) or 2.05A (230V)
Voltage 115V or 230V
Wattage 472 Watts
Max CFM 4.7
Diffusers 2 ProAir4 Weighted Diffusers
Cabinet Airmax Composite Cabinet, 23"L x 17"W x 15"H
Power Cord 6 ft Cabinet Cord / 2'6" Compressor Cord
Monthly Operating Cost (24/7) $33.00*
ProAir Diffuser Warranty 5 Years
Compressor & Electrical Warranty 3 Years
Composite Cabinet Warranty 10 Years
EasySet Airline Warranty 5 Years

*Estimated cost based on average electricity rates; actual cost varies by location.

Built to Last

SilentAir Compressor with SmartStart Technology

The heart of the system is a whisper-quiet 1/2 HP rocking piston compressor with rubber mounts for reduced noise and vibration. SmartStart Technology protects the compressor during pressurized restarts after a power interruption. Backed by a 3-year warranty.

Airmax Composite Cabinet

An ETL-certified composite cabinet with a faux-rock finish blends into any landscape while protecting the compressor and electrical components. An elevated base guards against flood water, and a ventilation fan with rain shroud keeps things cool and dry. Backed by a 10-year warranty.

Airflow Manifold Assembly

A 2-port manifold with nickel-plated ball valves simplifies airflow management to each diffuser individually. Optional quick disconnects make maintenance and winter storage easier. Set up for either 3/8" or 5/8" airline.

ProAir4 Weighted Diffusers

High-efficiency membrane diffusers release fine oxygen bubbles into the water column without the maintenance headaches of traditional air stones. An integrated check valve prevents backpressure on the compressor, and the weighted sled keeps each diffuser upright and submerged during installation. Backed by a 5-year warranty.

Need a Replacement Part?

🔧 Replacement Compressor

If your PS20's compressor has failed, the genuine Airmax RP50 (87R) 1/2 HP replacement motor is a direct fit.

Shop PS20 Replacement Motor →

Frequently Asked Questions

How do I know which coverage I'll get from the PS20?

Coverage depends on your pond's depth: 6'-9' deep aerates up to 1/2 acre, 9'-12' deep up to 1 acre, and over 12' deep up to 2 acres.

Can the cabinet be installed far from the pond?

Yes — the compressor cabinet can sit at the water's edge or up to 1/4 mile away, connected by airline, so you're not limited to running power right to the shoreline.

Do I need an electrician to install this?

No special wiring is required at the pond itself — Airmax EasySet airline delivers oxygen to the water while the compressor plugs into a standard outlet at the cabinet location.

How long until I see results?

Most pond owners notice visibly cleaner, clearer water within about 90 days of continuous operation.

What's the difference between the 115V and 230V options?

Both deliver the same aeration performance — the choice depends on what power is available at your installation site. The 230V model draws lower amperage (2.05A vs 4.1A).

What's covered under warranty?

The ProAir diffusers and EasySet airline are covered for 5 years, the compressor and electrical components for 3 years, and the composite cabinet for 10 years.

My compressor stopped working — can I buy just that part?

Yes — the RP50 (87R) 1/2 HP replacement compressor is sold separately and is a direct fit for the PS20.

Questions? Our pond experts are ready to help.

Call or email us — we'll help you size the right aeration system for your pond.

📞 888-825-6214