Airmax PondSerie PS40 With 4 Diffusers

Aeration for Ponds up to 4 Acres, up to 50' Deep
World's Best Aerator

Most Effective
Most Efficient
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4 ProAir Diffusers
Whisper Quiet Design
Made in the USA
ETL Listed
3-Year Warranty


Aeration systems utilize a shore-mounted air pump that delivers air to specialized diffusers that are located on the pond bottom--resulting 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 water and less muck. Results you can see in just 90 days!

Aeration circulates the water and increases oxygen, providing long-term benefits and reducing overall maintenance. Aeration is a key step in the Airmax Ecosystem, a simple 3 step approach to pond and lake management. The Airmax Ecosystem is the industry-leading method to achieve a clean, clear, thriving aquatic ecosystem. Learn more about the Airmax Ecosystem.

Airmax PondSeries PS40 With 4 Diffusers Aeration System

Easy Installation with Options - Airmax Aeration Systems are the easiest and most versatile systems to install on the market. PondSeries PS40 With 4 Diffusers Aeration 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 Compressor with SmartStart Technology (IST) - The heart and soul of each PondSeries Aeration System is a powerful whisper-quiet SilentAir 3/4 HP Rocking Piston Compressors built with SmartStart Technology (IST) to protect the compressor during pressurized restarts following power supply interruptions. Each highly efficient 115V or 230V compressor has rubber mounts to reduce noise and vibrations and ensure a silent operation. Each compressor can push up to 5.6 CFMs of oxygen to your pond while costing as little as $35.40 a month. Comes with a 3-year warranty.

Airflow Manifold Assembly - Airmax simplifies airflow management to individual diffusers with a 4-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 PS40 With 4 Diffusers is set up for 3/8" or 5/8" airlines.

ProAir 4 Weighted Diffusers - Designed for maximum oxygen uptake, 4 ProAir 4 Weighted Diffusers incorporate 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 back-pressure 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 PS40 With 4 Diffusers Aeration System
SilentAir Rocking
Piston Compressor

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


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


4 ProAir 4 Weighted Diffusers have an innovative maintenance-free sled design that keeps them submerged in water while maintaining an upright position during installation.

Cooling System

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

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 back pressure.

3/8" Weighted Airline

Airmax PondSeries PS40 With 4 Diffusers Aeration Systems comes with or without (4) 100' rolls of 3/8" Self-Weighted Airline. This airline is kink-free & fish-hook resistant.

Optional Aeration System 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.

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.

Burial Airline

5/8" Direct Burial Airline is designed for underground applications. Ideal during aeration installations when the power source is away from the pond's edge. The rigid wall makes it resistant to deformation and crushing.

Weighted Airline

Additional 3/8" or 5/8" self-weighted airline can lengthen the distance underwater to diffusers. 5/8" airline is recommended for a single line longer than 300' or when total airline is greater than 600'.

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.

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.

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.

Connector Kits

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



Video - Aeration Overview
Video - System Installation
Video - Airmax EcoSystem
Benefits of Aeration
Airmax Ecosystem
Pre-2022 Manual - English
Pre-2022 Manual - Spanish
Manual - English
Manual - Spanish

Tech Specs

Airmax PondSeries Aeration Systems PS40
PS40 With 4 Diffusers
Max Pond Size Up to 4 Acres
Max Diffuser Depth 50'
Aerates Ponds up to 6'-9' Deep Up to 2 Acres
Aerates Ponds up to 9'-12' Deep Up to 3 Acres
Aerates Ponds Over 12' Deep Up to 4 Acres
SilentAir Compressor 3/4 HP Rocking Piston Compressor
Running Amps 4.3 or 2.15
Voltage 115V or 230V
Wattage 495 Watts
Max CFM 5.6
ProAir4 Diffusers 4 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)* $35.40
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.

CAD Details

Click below to access CAD drawings, specifications, and related design files for Airmax products.

CAD details


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