Solar Powered Greenhouse Fan

Solar powered greenhouse fan
The 14″ solar powered fan installed with shutter and piston.

An extra solar powered fan can be added as an upgrade to any Growing Dome® greenhouse kit. The kit includes a 12″ (12 volt DC) fan on the 15′ – 26′ domes or a 14″ 12v DC fan on the 33′ – 42′ domes, a thermostat, shutter, univent piston, solar panel, exterior hood, and hardware. The maximum airflow rating is 1600 CFM (Cubic Feet per Minute) for the 12″ fan and 1925 CFM for the 14″ fan. The 26′ Growing Dome is the only kit that comes with one Solar Cooling Fan standard. Add one or, a few, to your Growing Dome to provide additional cooling, airflow, and ventilation. These reliable fans come with a one year limited warranty.


Solar Powered Cooling Upgrade

The 12″ Amtrak solar greenhouse fan.

The Solar Powered Cooling Upgrade replaces the 115v electric AC cooling fans on the 33′ and 42′ domes with solar powered 12v DC fans. This upgrade will reduce your carbon footprint by reducing electricity usage and will make you more self-sufficient. This is also a great option for people who do not have access to grid-tied electricity at the site of their Growing Dome. The 33′ Growing Dome kit comes with one 115V electric fan standard. When you choose the solar powered cooling upgrade, you receive two 12v solar powered fans to replace the 115V fan. The 42′ Growing Dome kit comes with two 115v fans standard. When you choose the solar powered cooling upgrade for the 42′ Growing Dome, you receive three 12v solar powered fans to replace the 115V fans.

Solar Fan Upgrade Considerations

The 115v cooling fans only use about 173 watts of energy each, and they are controlled by a thermostat. The solar powered fans may also be regulated by a thermostat, but they only run when the sun is out. A single 12v DC fan on the 15′ – 26′ Growing Domes provides about 1/2 of the air flow of a single 115v fan (1600 CFM as apposed to 2800 CFM). A single 12v DC fan on the 33′ and 42′ Growing Domes provides about 2/3 of the air flow of a single 115v fan (1925 CFM compared to 2800 CFM). The solar fan upgrade contains additional fans to compensate for the loss of air flow that the standard 115v fan(s) would provide.

Exterior hood for the solar greenhouse fan.
Exterior hood for the solar greenhouse fan.

If you live in an extremely hot environment, you may need more than the solar fans that we have to offer to sufficiently cool your Growing Dome. The Desert Cooling Package comes with a misting system and a 12v fan, for those in hot, dry climates. Solar swamp coolers manufactured by Southwest Solar are also a great option for hot, dry climates. If you live in a humid climate, you may need to contact a local HVAC heating and air conditioning supplier and/or electrician to assist you with purchasing an air conditioner and/or dehumidifier.