Well, few years ago I stumbled across one good tek how to made a good and cheap air heater who is in same time eco friendly! Many of you guys probably have seen these things or have ones, but I`ll post it anyway, cause probably many new members don`t know for those things and if you live in cold area as I, additional heating could be a blessing!

I`m not such a good tek writer neither invention is mine (and I didnt pictured steps of making one) so I`ll just post link to one good tutorial!

As I mentioned it is meant for additional heating. It don`t provide heat during the night as you`ll see why in tutorial. But it can maintain constant heating free of charge during the day when even during the day temp`s are running much much below zero! It is good for your plants, or for saving some money on heating your house!

http://www.youtube.com/watch?v=bRZvAAqzXIw