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Country Discussion Topics
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Temperature in the Greenhouse
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Kristys Red Barn    Posted 02-19-2004 at 12:19:33       [Reply]  [Send Email]
Those of you who have greenhouses, how do you control the temperature? We are building our own greenhouse and needing some advice on this. We are worried that it will get much too warm in there on a sunny Kansas day. We are considering putting in an electric thermostat that will turn on a fan at a certain temperature, but need other ideas and suggestions. Thanks for the help.


basod    Posted 02-20-2004 at 00:14:47       [Reply]  [Send Email]
I worked in a nursery for 10 years and built atleast 6 new greenhouses and modified many others. Depending upon the material you are using I might sugest a roll-up side its the best way to regulate temp on warm sunny days. Fans are needed to ciculate air depending on size of the greenhouse, Try an industrial fan with louvers on one end of the greenhouse and a door or garage door on the other end with suspended fans in each direction to circulate air when doors are shut. Are you planning on covering it with poly? I have other tricks to help keep it tight.


deadcarp    Posted 02-19-2004 at 17:21:06       [Reply]  [No Email]
might check into the fan setups they use in poultry barns - except for body heat from 20,000 birds they have much the same situation. then plus they use rollup walls on opposite sides of the bldgs.


Dieselrider    Posted 02-19-2004 at 15:10:19       [Reply]  [No Email]
You can also set up a cool mist system that comes on to water and help cool things down.


big fred    Posted 02-19-2004 at 14:22:19       [Reply]  [No Email]
I'm going to be putting a thermostatically controlled fan in my (small) greenhouse this spring. There were a few times last year when it reached 120F in there, even up here in western Washington.


Kristys Red Barn    Posted 02-19-2004 at 18:04:58       [Reply]  [Send Email]
That's really what we are looking for. Where did you find yours or did you make one and how? Thanks.


big fred    Posted 02-19-2004 at 18:25:21       [Reply]  [No Email]
I'm using a cheap 12 dollar window fan from Walmart. It's not really rated for use in the humid greenhouse environment, but for the price, I figgered I could replace it every couple years. It fits between the studs in the north wall, which is 2 by 4 and plywood. Little rain hood over the outlet on the outside and a bit of screen to keep the bugs and birds out. The door to the greenhouse is an aluminum screen door with a window that opens. I leave the window open all the time and just use the fan to move air.


Ya might...    Posted 02-19-2004 at 13:26:29       [Reply]  [No Email]
wanna look at what these folks have to offer....

Clipper :^)


Greg VT    Posted 02-19-2004 at 13:18:39       [Reply]  [No Email]
Check these out.

I have seen them in action and they work well.



Paula    Posted 02-19-2004 at 12:30:34       [Reply]  [Send Email]
I don't have a greenhouse, but since I'd considered
getting one at one time I did an obsessive amount of
research on them.

Temperature control is a problem both during cool and
warm times of year. In warm times a heater and
insulating covers at night take care of things. During
the warm months its a combination of a blower,
ventilation (louvered sides that open) and shade cloth
to control heat in the greenhouse. Also dirt floors stay
cooler than concrete floors.

Hope that helps.
Paula


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