Primus AIR Silent X


Primus 1-ARSM-15, AIR Silent X wind turbine for marine environments, 440 Watt, silent carbon-fibre blades, internal regulator, marine grade

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A wind turbine can help keep your batteries charged in winter, when there is little sun. In fact, solar PV and wind complement each other: The days with little sun tend to be windy, and vice versa. The Primus AIR-series of small wind turbines has been around since 1995, with over 150,000 installed since! Theirs is a proven product, for a reasonable price.

The AIR Silent X is made with hand-laminated carbon-fibre blue blades, designed to be quiet, even at high wind speeds. This makes the AIR Silent X particularly suitable for use on a boat etc.

The AIR Silent-X produces best at medium to high wind speeds and can work in a marine (salt spray) environment. For a low-wind environment the AIR Breeze could be a better choice. Peak-power output is 440 Watt, and there are versions for 12/24/48 Volt battery-charging applications in coastal, desert or Arctic environments. It delivers the energy you need for communications, offshore structures, sailing or remote monitoring, to name a few. A small wind turbine can also be a great addition to an off-grid system, to provide energy during those dark (but windy) winter days. With a build-in charge controller, the AIR Silent-X provides energy quietly and efficiently. The AIR Silent X is corrosion resistant, covered in aircraft quality paint with a marine grade O-ring seal and stainless steel fasteners, ensuring durability in challenging conditions. These are the official type codes:

Primus 1-ARSM-15-12: 12 Volt AIR Silent X
Primus 1-ARSM-15-24: 24 Volt AIR Silent X
Primus 1-ARSM-15-48: 48 Volt AIR Silent X

The AIR Silent X includes a stop-switch.

It is recommended to have at least a 200 Ah @ 12V, 100 Ah @ 24V, or 50Ah @ 48V battery bank size, to avoid frequent starting/stopping of the turbine. Also recommended is Primus’ Digital Wind Control Panel to make it easier to start/stop the turbine, provide overcurrent protection, and show power production.

Be sure to check out the Primus Webinars to learn more about installation, wind resources, turbine placement etc. See our Site Selection page for the best place to install your wind turbine.

Please note that the Primus turbines start to protect themselves from overheating above wind speeds of around 35 mph (16 m/s). This means it shuts down for 2-1/2 minutes, then runs again for a some of time, and shuts down again, this repeats. The effect is much lower energy production for these very high (and unusual) wind speeds. This is normal, and necessary for the turbine’s survival.


  • Stop-switch included!
  • 1.17 meter (46″) rotor diameter
  • 3.1 m/s (7 mph) startup wind speed
  • Marine-grade paint, stainless fasteners
  • Can produce 35 kWh/month at 5.8 m/s
  • Quiet hand-laminated carbon-fibre blades
  • Can withstand winds up to 49.2 m/s (110 mph)
  • Mounts on 1.5″ schedule 40 pipe, 48 mm (1.9″) outer diameter
  • Advanced microprocessor technology for superior performance
  • High wind protection without mechanical braking
  • Lightweight design is simple and easy-to-install
  • Permanent mold cast aluminum body
  • High-quality, field tested components
  • Warranty 5 years

Turbine Selection Matrix

Turbine Location Application Wind Sound
AIR 30 Land Industrial, Oil & Gas, Telecom High High
AIR 40 Land Residential, Education Moderate Low
AIR Silent X Land & Marine Any All Very low
AIR X Marine Marine Industrial off-shore High High
AIR Breeze Marine Sailing, Residential Moderate Low

AIR Turbine Power Curves
AIR Turbines Energy Curve
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