An extra solar powered fan can be added as an upgrade to any Growing Dome® greenhouse kit. The kit includes the 12″ endless breeze fan (12 volt DC), thermostat, shutter, univent piston, solar panel, exterior hood, and hardware. The maximum airflow rating is 900 CFM (Cubic Feet per Minute). The fan has three speed settings and the amperage draw for each setting is:
1.18 Amps on low, 1.62 Amps on medium, and 2.58 Amps on high. 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. A single fan kit is $495.
Solar Powered Cooling Upgrade
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 four 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 five 12v solar powered fans to replace the 115V fans. The upgrade for the 33′ Growing Dome is $400 and the upgrade for the 42′ Growing Dome is $490.
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 provides about 1/3 of the air flow of a single 115v fan (900 CFM as apposed 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.
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 Heat 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.