For 1,800 g from this site http://www.spadepot.com/shop/Heater-...lete-C692.aspx its outdoors. i did the math a need around 3,400 WATTs. but i want more WATTs as its outdoor. am aiming for around 80F. lows here are around night time 55F for the winter the summer much more higher. Anyway i would LIKE 80F but high/mid70's are fine to.