Portable Air Conditioner / Heater

Hi all!

Just wondering if anyone is using a portable air conditioner/heater for their grow rooms? I need to purchase one ASAP to combat the high temps in my grow room and I want one that doubles as a heater for helping with the low temps in the winter. There are so many to choose one and I want to make sure I choose a good product before I drop nearly $600! If anyone has any advice or suggestions I would greatly appreciate your input.

Thank you in advance!!
PM

use about 4000 b.t.u s per 1000 watts of light more if you have other appliances that create heat such as co2 generator

Unlike some other folks on here that are looking for ways to keep their rooms cooler, I actually have to keep my room warmer, due to the fact that my grow room is in the basement.
I use a small electric heater hooked up to a timer to be on during the light hours only. Temps are perfect 78-80.
I recently hooked a Co2 setup and it brought temps up a little bit, so I just turned my heater down a little.
I'm in the first weeks of flowering and my ladies are looking sexy.