Yeah but that's another thing that you only heard/understood half of.
I said that if you pump your air from your grow room through a mini
freezer not fridge and then out through the loft then the air will have been cooled before it gets there.
You can fit a fair amount of air into mini freezer before it uses the release valve to expel it.
Try taking a look at mini freezers actual heat sigs and energy usage and then get back to me.
I was trying to offer people who couldn't afford an aircon or wanted a quieter option a different option.
Not to mention the fact that i know people who do it