Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
Photo of Airmax SilentAir Piston Compressors
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Airmax SilentAir Piston Compressors

$1,138.38
$1,422.98
Size: 1/4 HP
Voltage: 115V
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Ships in 2–14 business days, depending on availability.

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Return within 30 days of purchase.

Photo of Airmax SilentAir Piston Compressors
Airmax SilentAir Piston Compressors
$1,138.38
$1,422.98

Upgrade your pond aeration with compressors engineered for efficiency and longevity. The Airmax SilentAir Rocking Piston series delivers consistent airflow while keeping energy costs low. Each unit features SmartStart technology to protect the motor during pressurized restarts.

Available in three power levels, these compressors replace older Airmax motors and fit a variety of SW and PS systems. Choose the model that matches your pond size and voltage requirements for seamless integration and quiet operation.

Why Choose Airmax SilentAir Rocking Piston Compressors?

  • Mag-drive rocking piston design for energy-efficient aeration
  • SmartStart technology protects during pressurized restarts
  • Low monthly operating cost under $36
  • Multi-voltage compatibility (115/230 V) for flexible installation
  • Direct replacements for SW and PS series aeration systems
  • Quiet operation enhances outdoor enjoyment

PRO TIP

Mount compressors in a sheltered, ventilated area above water level and replace airline tubing annually to maintain peak performance.

1/4 HP Single Piston1/2 HP Dual Piston3/4 HP Dual Piston
ModelG25 (RP25 87R)87RT75 (RP75)
Running Amps1.6 or 0.84.1 or 2.054.3 or 2.15
Voltage115V or 230V
Wattage184 Watts472 Watts495 Watts
Max Diffuser Depth50 Feet
Max CFM2.34.75.6
Monthly Operating Cost (24/7)$13.25$33.95$35.60
Replacement Unit ForSW20HP, PS10 (Post 2016)SW40HP, PS20, PS30, LS40 (Pre-2022 PS40)
Compatible Airmax Aeration SystemsPS40 w/3 Diffusers, PS40 w/4 Diffusers & LS80
Warranty2 Years

Shipping Information

We aim to get your pond and water garden supplies to you as quickly as possible.

  • Orders over $199 CAD ship free across Canada (excluding oversized items).
  • A flat rate of $14.99 applies to all smaller orders.
  • Standard delivery takes 1 to 4 business days.
  • Most in-stock items are dispatched within 24 hours.
  • Special order items may require 2 to 14 business days before shipping, depending on availability.
Returns & Exchanges

If something isn’t quite right, we’ve got you covered.

  • Returns are accepted within 30 days of delivery.
  • Items must be unused, in original packaging, and include all parts and proof of purchase.
  • Items marked as Clearance are final sale and cannot be returned or exchanged.

For full details, please review our Shipping Policy and Refund Policy.

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