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AIR 40 is the premier micro-wind turbine for land-based applications. It operates efficiently low to moderate wind speeds, providing energy for telecom, water pumping, lighting, SCADA, off-grid homes, or other low energy demand battery charging applications. The AIR 40 is ideal for pairing with solar to offset seasonal variation, delivering more consistent energy.
The all-new AIR 40 wind turbine. Quieter, more efficient, and precision-engineered to deliver more energy at lower wind speeds than any other wind generator in its class. AIR 40 is the next
generation of AIR turbines with more than 180,000 units sold globally, the world’s most popular small wind turbine.
The AIR 40 uses a new microprocessor-based technology that results in an increase in performance, battery charging capability, and reliability. Additionally, the “flutter” noise from the machine has been reduced.
The controller allows for peak-power tracking of the wind by optimizing the alternator’s output on all points of the cubic curve and efficiently delivers the energy to the battery. The turbine’s smart controller allows it to actually control blade rotation speed thus eliminating the buzzing noise commonly found with most small wind turbines.
AIR 40 wind turbine: Quieter, more efficient, and precision-engineered to deliver more energy at lower wind speeds than any other wind generator in its class.
AIR 40 is the next generation of AIR turbines! The AIR 40 uses a new microprocessor-based technology that results in an increase in performance in low to moderate winds, battery charging capability, and reliability- making it the world’s most popular small wind turbine .
The controller allows for peak-power tracking of the wind by optimizing the alternator’s output on all points of the cubic curve and efficiently delivers the energy to the battery. The turbine’s smart controller allows it to control blade rotation speed thus eliminating the buzzing noise commonly found with most small wind turbines.
AIR 40 is part of the latest generation of AIR products—the world’s best-selling wind turbines—with more than 180,000 units sold globally.
| Value | Specification |
|---|---|
| Energy | Approx. 40 kWh/mo at 5.5 m/s (12 mph) |
| Swept Area | 1.07 m2 (11.5 ft2) |
| Rotor Diameter | 1.17 m (46 in) |
| Weight | 5.9 kg (13 lb) |
| Shipping Dimensions | 686 x 318 x 229 mm (27 x 12.5 x 9 in) 7.7 kg (17 lb) |
| Startup Wind Speed | 3.1 m/s (7 mph) |
| Voltage | 12, 24, and 48 VDC |
| Turbine Controller | Microprocessor-based smart controller |
| Body | basic finish-grey |
| Blades | (3) Injection-molded composite-black |
| Alternator | Permanent magnet brushless |
| Overspeed Protection | Electronic torque control |
| Survival Wind Speed | 40.2 m/s (90 mph) |
| Mount | 1.5 in schedule 40 pipe 48 mm (1.9 in) outer diameter |


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Oversized or heavy products may not qualify for standard courier shipping. Please contact our team before placing your order for a custom shipping quote and to discuss specialized delivery options.
If you have any questions or concerns regarding your shipment, delivery timeline, or the handling of your order, please contact our customer support team—we're here to help.
