How to keep a grow room warm??

I need to know how I can keep a grow room warm when no lights are on for 12 hrs? My grow box is out in a garage where there is no heat/ac. It gets pretty damn cold in the winter? Any thoughts info out there? Anyone else try it before?

It's awfully difficult to accomplish this efficiently. Your gonna end up spending bookoo bucks in energy costs.

Hmm try insulating it with house insulation, foamboard, blankets, etc. Maybe you could buy a space heater and put it in a corner away from your plants to keep the garage warm.

How big is your garage? How big is your grow box?

If I were you I would hang a thermometer in the grow box. Try to insulate the grow box itself instead of the garage. Then get a small portable heater WITH A BUILT IN FAN to blow into the box. Experiment by putting the heater nearer and farther to the box for 20 minutes or something and then take the temp inside the box till you get it just right. I think this setup would work pretty well, you might be able to find those types of heaters at garage sales for 5$ or so.

Good luck!

Put a electric heater in there. Thats all ya can do or move the plants.

i used a space heater.
you can have ya light cycle in the night if you haven't already started flower its a lil easier like that.
blankets etc are great too.

Garage is 1 car, box is 36" tall, 20" deep, 30" wide. I wanted to avoid using any dangerous kinds of heaters for 12 hrs. Good replies though, keep em comin!

I use one of the oil filled space heaters in the winter. Don't put it on the timer. Just leave it on and set the temp where you want it to be.

I'm currently changing the time the light is on, as i want the light on to be at night when coldest..
By next friday they'll be 5pm - 11am..
I have a temp gauge the records min max temps..

Anybody got any figures out there that it should be at..??

Thanks..

I have a electric heater I use for my bedroom in the winter which is very small and has a thermo,it turns off when at a certin user set temp and turns back on at a xxx temp It cost me like $30 at target

Electric space heater are fine, but what do you do in flowering. That is the question I have been wrestling with for my next grow which I will be at the beginning of the year. I came up with the solution that is best for my grow. I decided to invest in a oil filled radiator. There a little more expensive than conventional space heater,but are a lot safer and no red glow to interrupt flowering. I expect to pay around 80 bucks. If I am wrong in my thinking hope someone has tried it and give me the pro's and con's. Jusy my 0.02cents.

WWgrower said:

Electric space heater are fine, but what do you do in flowering. That is the question I have been wrestling with for my next grow which I will be at the beginning of the year. I came up with the solution that is best for my grow. I decided to invest in a oil filled radiator. There a little more expensive than conventional space heater,but are a lot safer and no red glow to interrupt flowering. I expect to pay around 80 bucks. If I am wrong in my thinking hope someone has tried it and give me the pro's and con's. Jusy my 0.02cents.

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I had a oil filled and it exploded and almost started a fire while I was a sleep 2 years ago,Imop I don't think there safe but it would work.But either or both are not safe imop but if it were me I'd go with a temp control electric heater,btw mine emits no red glow! lighting times can help alot also.. have the lights on when it get the coldest at night and off during the day

guudbud said:

I had a oil filled and it exploded and almost started a fire while I was a sleep 2 years ago,Imop I don't think there safe but it would work.But either or both are not safe imop but if it were me I'd go with a temp control electric heater,btw mine emits no red glow! lighting times can help alot also.. have the lights on when it get the coldest at night and off during the day

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You would almost think one could sue the company for this if you were operating it correctly, but I've used them and they seem to work just fine - If you got a new model I'm sure it's a very very low chance of exploding or anything, but hey, if it does, just hope that it's either small enough for no one to care, or if people do notice something and call the fire department that it was big enough to destroy the plants!


On a more serious note, I think if you could heat the whole garage efficiently then that would work pretty nicely. It may be a little more expensive then insulating the grow itself but it also may be well worth it.

Also trying to figure this out. I have a homemade steath closet on a 3 season porch and am wrestling with this issue, however I'm pretty sure heating just the cab by blowing warm air in is the way to go. Idk tho, damn space heaters freak me out. We should all keep posting updates as it gets colder.

One more thing you can do is to get a large piece of styrofoam about 4 inches thick and a bit larger then your box is. Then set your box on it, this would stop cold coming in considerably since its a garage floor (colddddd) I am doing this with my grow as it will be winter and its on a cold bathroom floor. I was however lucky enough to find some big sheets of this stuff outside a home being built in my neighborhood but I imagine a small board of it would cost next to nothing.

Not sure where you live but where I live 4" styrofoam wouldn't do squat! After about the 3rd night below 0 and your plant will be singing "knockin on heaven door! As far as oiled filled over elecrtic heaters. All I have read is the oil filled are way safer than ANY electric heaters. Until someone shows me something better or the research showing how bad the oiled filled heaters are as opposed to alternatives I am staying with original plans.

i have no idea if this would work but what about eletric blanket or heating pad. just an idea as i grow inside

peace

Just have your lights on during night time, it will help some, depending on the temperature during the day

In the winter up here in the northeast can be below 0 on many days especially during stormy weeks. Snow on the roof and up the sides of the house hard to keep closets warm. You know what Iam talkin about!

There are heated mats designed for garages and utility buildings. I had a 14x14 shed back when things were good....I was going to lay the heated pad down under the carpet to help with insulation. They're real expensive tho and things are shit now and everybodys broke. But anyway it's an idea... Also just wanted to say I've found that my grow closet raises about 10 degrees with lights on. I have about 250 watt cfl's and the inside is insulated with that mylar insulation.