Greenhouse Ventilation Design

Greenhouse Ventilation Systems are an important part of the entire greenhouse. Without them, heat will build up quickly on sunny days. The greenhouse ventilation systems consist of an appropriately sized exhaust fan, 1 or 2 intake shutters and a thermostat. The sizes needed are determined by the square footage of your greenhouse.

Greenhouse Ventilation Systems

Greenhouse Ventilation Systems

Features of Greenhouse Ventilation Systems

We suggest you place the exhaust fan up high in one end of the greenhouse. Place the shutter(s) down low on the opposite wall. Wire them to a one stage thermostat or two stage thermostat.  This will enable your greenhouse ventilation system to give you the most efficient flow of air throughout the entire greenhouse. The motorized exhaust fans have an aluminum blade and pvc shutter. The heavy duty motors are totally enclosed and maintenance free. The motorized intake shutters are exterior grade PVC for a maintenance free unit. This will also resist rust and corrosion. The louvers are curved for a tight fit when closed. Corners are fused together for strength and durability. Greenhouse ventilation systems may be easily retrofitted in a polycarbonate greenhouse. But, we highly recommend purchasing them at the same time as a glass greenhouse.

Schaefer Motorized Exhaust Fan

  • FREE SHIPPING to Contiguous US
  • low profile aluminum blade, pvc shutter heavy duty motor
  • 12″, 760 CFM, up to 120 sq ft.  $225.00 Add to Cart
  • 16″, 1250 CFM, 121- 200 sq ft. $275.00 Add to Cart
  • 20″, 3122 CFM, 210 – 300 sq ft. $345.00 Add to Cart

Schaefer Motorized Intake Shutter

  • FREE SHIPPING to Contiguous US
  • white exterior grade PVC
  • curved louvers for a tight fit when closed
  • corners are fused for strength
  • 12″, recommend 2 for 1 -12″ fan $260.00 Add to Cart
  • 20″, recommend 2 for 1 -16″ fan $280.00 Add to Cart
  • 22″, recommend 2 for 1 -22″ fan $290.00 Add to Cart

Schaefer Thermostats

  • FREE SHIPPING to Contiguous US
  • 1 speed heating or cooling $87.00 Add to Cart
  • 2 stage heating, 2 stage cooling, or 2 speed cooling $169.00 Add to Cart