Pulling cold air through my hood?

I am planning on pulling air from the outside to cool my hood. I have an air sealed hps hood hooked up to ducting and a vortex fan. It pulls from the outside into another room. My question is weather you can pull freezing cold air through them or will that fuck up the bulb?

Freda Felcher said:

I am planning on pulling air from the outside to cool my hood. I have an air sealed hps hood hooked up to ducting and a vortex fan. It pulls from the outside into another room. My question is weather you can pull freezing cold air through them or will that fuck up the bulb?

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i am pretty sure you will bust that bulb because when you buy a lighting system in winter in colorado they say to let the bulb warm up to room temperature before you turn them on. is there any way not to pull from outside because if so i would do that instead

im no expert but it seems to me the only way you could fuck up the bulb is if you had the bulb on and started blowing cold air on it while the bulb is still hot but im sure it would be fine if you got it cold first then turned on the light that way you wouldnt risk any sort of shock. but i see no reason why the light wouldnt work propperly in the cold since almost every most parking lots, farmers, etc. use hps and mh lights to light there property

Thanks for the replies! Is there anyone reading this who has done this?

ok i have 3 bussines lots across the way with some sort of hid lighting lighting up there lots 24/7 and its 0 degrees ferenhight here so i hope that answers your question

i pull cold air across mine. we don't have snow on the ground but it does freeze so the air is freezing cold. i have blown no bulbs yet.

the only difference it will make is the lamp will take longer to start up the colder it gets... and thats it. in actuality, it is best to have your lamp operating in colder temps to begin with, it prolongs the lamp life, less heat stress ovder the lifetime of the lamp, and its heat that kills the llamp, 9-10.

Cool, sounds good! I think i'll set the separate timer on the fan to start before the light comes on so the bulb doesn't experience huge temperature shifts.

you might get some condensation in the bulb area and that will be a problem.

Freda Felcher said:

Cool, sounds good! I think i'll set the separate timer on the fan to start before the light comes on so the bulb doesn't experience huge temperature shifts.

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my inline fan and lights are all on the same timer. when the lights come on the fan kicks on as well.

i leave my fans on 24-7 lights on or off. but heat is a killer of light. do you have a fan to take the heat away from the light as well. i do both bring it in and take it out.buy sucking the heat work well for me.

hey fdd hows your garden this year. im sure it was a monster.

i have a separate exhaust fan.


i did alright this year, except i can't seem to get rid of any.

fdd2blk said:

i have a separate exhaust fan.


i did alright this year, except i can't seem to get rid of any.

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maybe the price is wrong,, these are tuff times.

thats because your smoke makes the hole town not want to work, just sit around like couch potatos and watch tv. so the mayor told every one to stop buying from you. so that the city would go back to work!!! lol

I've seen a setup where the outside air coming in is cold enough to cause frost buildup on the outside of the blower. No issues with the bulbs, and everything stays nice and cool.