Airmax® Shallow Water Series™ SW40

  • The Most Effective
  • The Quietest
  • The Most Efficient
  • The Easiest to Install



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 Shallow Water Series SW40 Aeration System

Easy Installation With Options

Airmax Aeration Systems are the easiest and most versatile systems to install on the market. Shallow Water Series SW40 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 for this 115V system. Airmax EasySet airline delivers oxygen to the water without the added expense of hiring an electrician. This high-pressure system is ideal for increasing oxygen to shallow ponds up to 6′ deep.

Airmax Composite Cabinet

ETL electrical safety certified composite cabinet has a quiet design with a faux rock finish that blends 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 Linear Diaphragm Compressor

The heart and soul of each Shallow Water Series Aeration System is a powerful whisper-quiet LR50 Linear Diaphragm Compressor built for high efficiency, this 115V compressor comes with rubber mounts to reduce noise and vibrations to ensure a silent operation. The SW40 can push up to 4.9 CFMs of oxygen to your pond while costing as little as $7.20 a month. Comes with a 3-year warranty.

Airflow Manifold Assembly

Airmax simplifies airflow management to individual diffuser plates with a 4-port manifold with nickel-plated ball valves, braided hose sleeves that protect internal airlines from wear, and quick airline disconnects for fast and secure airline connections, and system removal for storage. The SW40 System is set up for 3/8″ or 5/8″ airlines.

ProAir 2 Weighted Diffusers

Designed for maximum oxygen uptake, 4 ProAir 2 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 2 Weighted Diffuser has an integrated check valve to prevent backpressure on the compressor. The innovative sled design keeps the ProAir 2 submerged while maintaining an upright position during installation. Comes with a 5-year warranty.

Included With the Shallow Water Series SW40 Aeration System

Linear Diaphragm Compressor

Highly efficient linear diaphragm compressor and manifold with ball valves simplifies 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 Diffuser Plates

4 ProAir 2 Weighted Diffusers have an innovative maintenance-free sled design that keeps them 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.

Quick Airline Disconnects

Quick disconnects create quick and secure connections to direct burial or self-weighted airlines for easy installations or storage removal.

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 Shallow Water Series SW40 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

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.

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 Weighted 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.


Video – System Installation

Video – Airmax Ecosystem

Benefits of Aeration

Pond & Lake Management

Manual – English

Manual – Spanish

Tech Specs

Max Pond Size Up to 1/2 Acre
Max Diffuser Depth 6 Feet
Aerates Pond Size Up to 6′ Depth Up to 1/2 Acre
SilentAir Compressor LR50 Diaphragm
Max/Running Amps 0.87
Voltage 115V
Wattage 100 Watts
Max CFM 4.9
Diffuser Type (4) ProAir 2 Weighted Diffusers
Enclosure Airmax Composite Cabinet
Cabinet Dimensions 23″L x 17″W x 15″H
Power Cord 6 Feet
Monthly Operating Cost (24/7)* $7.20
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. For more accurate operating cost use our energy calculator.

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

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