Down in NZ so just hitting winter here. Yep, summer I plan on moving the rig to a cooler room we do not use. As long as it covers the power costs then running through summer is not an issue for me unless I have to run extra cooling. For mid summer it might need to be powered down when the ambient temp is too high which would effect ROI. If it can pay the parts in say 9 months then it is viable imho.