Greenhouses have to be designed to not Greenhouse Auto Vent merely capture solar energy but also adequately ventilate extra heat if temperature ranges get too hot.

You should always be sure you have sufficient vents in the roof of your greenhouse as heat rises and you want that heat to flee.

Greenhouse roof vents work really well because they are located where heat gathers naturally at the peak of the roof.

If vents in the roof are not possible, make sure to at least have a home window to two you can open.

Ideally you would like to have cross ventilation therefore two windows on two sides of the greenhouse work greatest.

However you should not leave the vents or windows open at nighttime as you’ll lose any kind of heat gain and cool your greenhouse too much.

So you close the vents or windows at night and what happens another morning: you forget! Right now your greenhouse overheats and if you’re unlucky, you lose some plants.

Or you forget to close the vents at nighttime and your plant life suffer if the night time is too cool.