oh, right i understand now.

your worried about a mirage ( shimmering air ) caused by rising heat.

if thats a problem you can just run some small ducting outside the house from the vent exit, so the air has chance to cool down outside before it reaches the final exit point.

or if your venting into the atticc just have a nice long vent duct curled up in the corner.

using an open window for vent is fine, but on the scale of 3 1kw lamps you are going to need some kind of custom/improvised ventilation system.

unless you live in alaska or norway, i cant see it even being an issue to be honest....where do you live and what set up have you got?
babystarbud Reviewed by babystarbud on . What are the methods to cool HEAT? I know air conditioning is amongst the most popular method of cooling a grow room's heat. But in my setup an A/C is almost impractical, hard to setup, basically I don't want to use an AC, at all. Especially in the winter, wouldn't the water just freeze or something, causing malfunction? I don't know, I'm just guessing here. I guess I'm looking for alternative solutions to cool the heat before I dispense it outside the window, because in the winter time all that heat will surely create a Rating: 5