The chiller seems to be fairing well on the porch with 88 degree weather. The thermostat says the reservoir is 50 degrees (I have it set with a target of 39 degrees so it's working hard), my thermometer says the tub is still 46-47 degrees next to the output into the tub from the return hose. I am so happy! The tub stayed near 41 degrees late in the morning, so I should be able to CT all summer without messing with ics if I do early morning CT like I have been, and hopefully will only need to add ice from the icemaker if I do it later. I will have to see what the 90+ degree days are like. I have a tower fan blowing the heat output from the chiller out, and a little usb fan sends air from the opposite side to keep the ventillation going. I cover the pvc cold tub with some pipe insulation and made a top for it out of more pipe insulation LOL!