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Airmax PS40 pond aeration system with compressor cabinet, three weighted diffuser assemblies and coiled black airline tubing

Triple or Quad Skid Pond Aeration System - PS40

SKU:
ps40grp
$3,399.99 - $4,019.99
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Model: Airmax PondSeries PS40
Kit options: 3 or 4 weighted diffusers
Maximum pond coverage: 3 or 4 acres, depending on depth and kit
Included airline: 300' or 400' of 3/8" weighted tubing
Compressor: 3/4 HP, 115V, 5.6 CFM
Maximum diffuser depth: 50'
Manufacturer warranty: 3 years compressor/electrical; 5 years diffusers/airline; 10 years cabinet
Origin: Made in USA
View Airmax owner's manual and warranty terms
Current Stock:
Description

Airmax PondSeries Aeration Systems

PS40 Pond Aeration System | 3 or 4 Diffusers

Give your pond the benefits of continuous bottom-up circulation with the Airmax PondSeries PS40. Built for larger ponds and lakes, this complete aeration package combines a 3/4 HP SilentAir rocking piston compressor, ProAir 4 weighted diffusers, a protective outdoor cabinet, and included weighted airline. Choose three diffusers for ponds up to 3 acres or four diffusers for ponds up to 4 acres, depending on depth and layout.

3–4 Acres Maximum rated coverage by kit
50 Feet Maximum diffuser depth
3/4 HP SilentAir compressor
300–400' Included weighted airline

Choose the Right PS40 Kit

Both options use the same PS40 compressor and cabinet. The difference is the number of diffuser plates, the amount of included airline, and the area each configuration is designed to aerate. Select your kit using the product options above.

Three-Diffuser Package

PS40 – 3 Diffuser Plates

  • Item: A600842
  • Coverage: Up to 3 acres
  • Diffusers: 3 ProAir 4 weighted plates
  • Airline: 300' total, in three 100' rolls
Four-Diffuser Package

PS40 – 4 Diffuser Plates

  • Item: A600867
  • Coverage: Up to 4 acres
  • Diffusers: 4 ProAir 4 weighted plates
  • Airline: 400' total, in four 100' rolls

Aeration Coverage by Pond Depth

Pond Depth PS40 – 3 Diffusers PS40 – 4 Diffusers
6–9 feet Up to 1.5 acres Up to 2 acres
9–12 feet Up to 2 acres Up to 3 acres
12–50 feet Up to 3 acres Up to 4 acres

6–9 Feet Deep

3 diffusers: Up to 1.5 acres
4 diffusers: Up to 2 acres

9–12 Feet Deep

3 diffusers: Up to 2 acres
4 diffusers: Up to 3 acres

12–50 Feet Deep

3 diffusers: Up to 3 acres
4 diffusers: Up to 4 acres

Need help sizing your pond?

These are maximum manufacturer coverage ratings. Irregular shorelines, varying depths, and isolated coves may require a different diffuser layout or additional aeration capacity. We recommend reviewing your pond's size, depth, and shape before choosing a system.

For smaller ponds, see our PS20 aeration system. For larger applications, explore our PS60 aeration systems.

What's Included in Your PS40 System?

SilentAir Compressor & Cabinet

  • 3/4 HP SilentAir rocking piston compressor
  • Airmax composite outdoor cabinet
  • Integrated cooling fan and air filtration
  • Airflow manifold for diffuser adjustment
  • Pressure gauge and pressure relief valve
  • Pre-wired electrical components

ProAir 4 Diffuser Assemblies

  • Three or four weighted diffuser plates, depending on kit selected
  • PTFE non-stick 6" membrane diffuser sticks
  • Weighted sled design for stable positioning
  • Integrated diffuser check valves

Included Weighted Airline

  • 3-diffuser kit: Three 100' rolls
  • 4-diffuser kit: Four 100' rolls
  • 3/8" self-weighted airline for underwater use
  • Designed to stay submerged without added weights

View 3/8" self-weighted tubing

Plan for Your Installation

Depending on your layout, you may need additional tubing, airline connector kits, or direct burial airline for a remote cabinet location. These are not included as additional accessories.

View direct burial airline

Our Airline Recommendation

The included packages use 3/8" weighted airline. For improved airflow and reduced compressor back pressure, our catalog recommends upgrading to 5/8" tubing where appropriate. We can help you evaluate line length, water depth, and tubing requirements before ordering.

Explore 5/8" EasySet weighted airline (sold separately).

PS40 Technical Specifications

Model: Airmax PondSeries PS40
Listing SKU: ps40grp
3-diffuser item: A600842
4-diffuser item: A600867
Compressor: 3/4 HP rocking piston, SilentAir T75 (RP75)
Voltage: 115V
Running amps: 4.3
Maximum airflow: 5.6 CFM
Maximum depth: 50 feet
Pond coverage: Up to 3 or 4 acres, depending on configuration and depth
Cabinet: 23"L × 17"W × 15"H
Power cord: 6 feet
Diffuser type: ProAir 4 weighted membrane diffuser
Diffuser size: 19"L × 19"W × 5"H per plate
Airline: 3/8" weighted, 300' or 400' total
Certification: ETL Listed
Country of origin: Made in USA
Operating cost: Approx. $35.40/month at $0.10/kWh, 24/7

Actual electricity expense varies with local utility rates. The published cost is a manufacturer reference estimate, not a guaranteed monthly bill.

Installation & Startup

The PS40 uses a shore-mounted compressor to deliver air through weighted tubing to diffuser plates on the pond bottom. Rising bubbles help circulate deeper water upward, supporting oxygen distribution through the pond.

1

Plan the Layout

Measure your pond and identify its deeper areas. Distribute the selected diffusers to provide effective circulation across the water body.

2

Prepare the Cabinet Site

Place the cabinet on a stable, level, well-drained base above the high-water mark, with unrestricted airflow. Use a properly grounded, GFCI-protected power connection.

3

Connect the Airline

Run the weighted airline to each diffuser. A cabinet farther from shore may require additional direct burial airline. Runs longer than one 100' section require compatible connector kits.

4

Position & Balance

Carefully lower each diffuser into the planned position. Start and adjust airflow as directed in the manual, checking for even operation and appropriate system pressure.

Important: Follow the Gradual Startup Procedure

Starting a bottom-diffused aeration system at full operation in a previously unaerated pond can rapidly circulate oxygen-depleted deep water and potentially harm fish. Airmax specifies a gradual seven-day startup whenever the system is new or has been off for an extended period.

Day 130 minutes
Day 21 hour
Day 32 hours
Day 44 hours
Day 58 hours
Day 616 hours
Day 724-hour operation

Operate only for the listed time on Days 1–6, then leave the system off for the remainder of each day. Follow the complete manufacturer manual. Never connect the system through an extension cord.

Maintenance & Seasonal Operation

The PS40 is designed for regular, continuous operation, particularly during warmer months. Keep the cabinet ventilation openings clear and follow Airmax's maintenance schedule to support compressor performance.

Regular Maintenance

  • Every 3–6 months: Clean or replace the air filter, check cabinet cooling and monitor the pressure gauge.
  • Every 12–18 months: Service the compressor using the appropriate maintenance kit.
  • Every 24–36 months: Inspect and clean diffuser membrane sticks as needed.

Winter Operation

Winter operation requires additional care. Active aeration can create open-water areas and dangerously thin ice. Airmax recommends warning signs around affected ponds.

If shutting down for the season, follow the manufacturer's winterization and storage instructions, including compressor protection where applicable.

Airmax Warranty Coverage

Airmax provides component-specific limited warranty coverage for the PondSeries system:

3-Year Warranty

Compressor and electrical components.

5-Year Warranty

Diffusers and airline.

10-Year Warranty

Airmax composite cabinet.

Warranty Terms

Coverage is subject to manufacturer conditions and exclusions, including normal wear components. See the owner's manual for full terms and registration requirements.

Installation Manuals & Resources

Use the current-model PondSeries documentation for complete installation, maintenance, troubleshooting, safety, and warranty instructions.

PondSeries Owner's Manual (PDF) Official Airmax How-To Videos Shop Pond & Lake Aeration

Airmax Aeration System Installation Video

Watch this official Airmax installation overview for an introduction to setting up a bottom-diffused pond aeration system. This video covers the product family; always follow the current PS40 owner's manual for exact-model installation and startup instructions.

Airmax Aeration System Installation

Official Airmax installation overview. Product-family demonstration; accessories and installation steps may differ from the current PS40 package.

Need Help Choosing Your Aeration System?

Our Sales/Tech Team can help you review pond size, depth, diffuser placement, airline requirements, and the right PS40 configuration for your property.

Call 888-619-3474 Email Our Sales/Tech Team

Frequently Asked Questions

Will the PS40 help reduce pond muck and odors?

Bottom-up aeration promotes circulation and improves oxygen availability, helping support beneficial aerobic bacteria that break down organic material. Actual muck and odor reduction depends on pond conditions, nutrient loading, and ongoing pond management.

Can I install the compressor away from the pond?

Yes. The cabinet can be located away from the shoreline with an appropriately sized direct burial airline connection. Additional tubing, compatible fittings, and possibly a remote manifold may be required. We recommend reviewing longer runs with our Sales/Tech Team.

Is the PS40 suitable for a pond less than six feet deep?

The published PS40 coverage chart begins at six feet of depth. For a shallower pond, we recommend reviewing Airmax's shallow-water aeration options rather than assuming standard PS40 coverage ratings apply.

Do I need additional airline connectors?

Potentially. The bundled airline comes in 100-foot rolls. If an individual diffuser line needs to extend beyond 100 feet or your installation uses additional tubing, compatible connector fittings are required. Select fittings for the tubing diameter you are using.

Does the PS40 operate continuously?

The system is designed for continuous operation after the manufacturer's gradual startup procedure. Airmax recommends continuous summer operation. Winter operation or shutdown requires following the manufacturer's seasonal instructions.

Will the PS40 create a decorative water fountain?

No. The PS40 is a bottom-diffused aeration system. It creates rising bubbles and water circulation from submerged diffuser plates rather than a decorative spray pattern above the pond surface.