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Airmax PS20 | Water Aeration | Aeration System | Pond Aerator

Aerates Ponds up to 2 Acres and up to 21′ Deep.
Aeration systems utilize a shore-mounted air pump that delivers air to specialized diffuser plates on the pond bottom. This results in a column of rising bubbles that circulates water throughout the pond, eliminating a change in temperature or thermocline. With increased oxygen and added natural bacteria, any excess nutrients in the pond or lake are metabolized, resulting in cleaner, clearer water and less muck. Results you can see in just 90 days!



Key Features:

  • Aeration for Ponds up to 2 Acres, up to 50′ Deep
  • 2 ProAir® Diffusers
  • Whisper Quiet Design
  • Made in the USA
  • ETL Listed
  • 3-Year Warranty


Water Aeration System Overview:

Easy Installation with Options – Airmax Aeration Systems are the easiest and most versatile systems to install on the market. PondSeries PS20 System can be installed at the water’s edge or up to 1/4 mile away from the pond or lake. No power is needed at the shore and select from 115V or 230V systems. Airmax EasySet airline delivers oxygen to the water without the added expense of hiring an electrician.

Airmax Composite Cabinet – ETL electrical safety certified composite cabinet has a quiet design with a faux rock finish to blend into any landscape. The removable top and side high-density air intake filter protect the compressor and pre-wired electrical box from outside contaminants while providing easy access. Other cabinet features include an elevated base protecting against damaging flood water and a ventilation fan with a rain shroud that cools and protects against moisture and heat damage. Cabinet dimensions: 23″L x 17″W x 15″H. Comes with a 10-year warranty.

SilentAir (IST) Compressor with SmartStart Technology – The heart and soul of each PondSeries Aeration System is a powerful whisper-quiet SilentAir 1/2 HP Rocking Piston Compressors built with SmartStart Technology (IST) to protect compressor during pressurized restarts following power supply interruptions. Each highly efficient 115V or 230V compressor comes with rubber mounts to reduce noise and vibrations to ensure a silent operation. Each compressor can push up to 4.7 CFMs of oxygen to your pond while costing as little as $33.00 a month. Comes with a 3-year warranty.

Airflow Manifold Assembly – Airmax simplifies airflow management to individual diffusers with a 2-port manifold with nickel-plated ball valves. Optional airline quick disconnects can be added for simplified removal during maintenance or for winter storage of systems that do not run year round. PondSeries PS20 Systems is set up for 3/8″ or 5/8″ airline.

ProAir®4 Weighted Diffusers – Designed for maximum oxygen uptake, 2 ProAir 4 Weighted Diffusers incorporates high-efficiency low-maintenance membrane sticks to release tiny oxygen bubbles into the water column. Membrane diffusers have the synergy of air stones without the headaches of cracking and acid-washing. The ProAir 4 Weighted Diffuser has an integrated check valve to prevent backpressure on the compressor. The innovative sled design keeps the ProAir 4 submerged while maintaining an upright position during installation. Comes with a 5-year warranty.

Included with the PondSeries PS20 Aeration System

SilentAir Rocking Piston Compressor

Highly efficient rocking piston compressors and manifolds with ball valves simplify airflow management and continuous performance to individual diffusers.

Composite Cabinet

ETL electrical safety certified composite cabinet features a quiet design with a faux rock finish that blends into any landscape while protecting electrical components.

Weighted Diffusers

2 ProAir 4 Weighted Diffuser has an innovative maintenance-free sled design that keeps it submerged in water while maintaining an upright position during installation.

Enhanced Cooling System

The cabinet features a protective rain shroud and pre-wired high flow cooling fan that tunnels air flow evenly through the cabinet protecting compressors against moisture and heat damage.

Dual Air Filters

High-density cabinet intake pre-filter and compressor air filter maximize the performance and longevity of the system, by protecting the compressors from outside contaminants.

Pressure Gauge & Relief Valve

The compressor includes a pressure gauge to help monitor system performance and a pressure relief valve to protect against backpressure.

3/8″ Weighted Airline

Airmax PondSeries PS20 Aeration Systems comes with or without (2) 100′ rolls of 3/8″ Self-Weighted Airline. This airline is kink-free & fish hook resistant.

Optional Water Aeration Accessories:

Cabinet Post Mount Kit

Use the powdered coated aluminum Cabinet Post Mount Kit for installations that require the aeration cabinet to be elevated. Includes bracket and hardware to secure cabinet to both round or square wooden posts, 4″ diameter or larger.

Cabinet Security Kit

Simple, sleek design to protect all Airmax Aeration Systems. The Cabinet Security Kit can be used to anchor an aeration system to the ground and protect against unwanted guests.

EasySet Airline

Extend your aeration system’s reach with EasySet Airline. 5/8″ direct burial airline is perfect for underground applications. 3/8″ and 5/8″ self-weighted airline sinks to the bottom of the pond and is puncture-resistant for years of continuous use.

Airline Connector Kits

EasySet Airline Connector Kits include 3/8″ and/or 5/8″ barbed fittings and 2 stainless-steel hose clamps to connect two different lengths of self-weighted or direct burial airline securely in place.

Camlock Connector Kits

Provides fast and easy connection between compressor hoses and underground airlines. Ideal for systems that are removed and stored during the winter.

Remote Manifold Kit

The Remote Manifold Kit allows for a single run of direct burial airline from the aeration cabinet to the pond. Allowing for airflow adjustments while viewing the diffusers. Great for installations when the power source is away from the pond’s edge.

Junction Valve Box

The Junction Valve Box fits directly under your aeration cabinet. It is designed to allow for easy access to airline connections on your compressor manifold for maintenance or winter removal.

Product Videos:

Water Aeration Overview


System Installation


Airmax EcoSystem


Product Manual


Technical Specs

Max Pond Size Up to 2 Acres
Max Diffuser Depth** 50′
Aerates Ponds up to 6′-9′ Deep Up to 1/2 Acre
Aerates Ponds up to 9′-12′ Deep Up to 1 Acre
Aerates Ponds Over 12′ Deep Up to 2 Acre
SilentAir Compressor 1/2 HP Rocking Piston Compressor
Running Amps 4.1 or 2.05
Voltage 115V or 230V
Wattage 472 Watts
Max CFM 4.7
ProAir4 Diffusers 2 Diffusers
Airmax Composite Cabinet Standard Cabinet
Cabinet Dimensions 23″L x 17″W x 15″H
Power Cord 6′ Cabinet Cord
2’6″ Compressor Cord
Monthly Operating Cost (24/7)* $33.00
ProAir Diffuser Warranty 5-Years
Compressor & Electrical Component Warranty 3-Years
Composite Cabinet Warranty 10-Years
EasySet Airline Warranty 5-Years

*Monthly Operating Cost is calculated at $0.10 per kilowatt hour. Please note that costs vary by location.

Additional information

(2) 100' rolls of 3/8" Self-Weighted Airline

No, Yes


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Airmax PS20 | Water Aeration | Aeration System | Pond Aerator

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