Chiller Sizing

[Parker]

I'm not sure Central Air would solve my problem. The ambient air temp in the basement never climbs over 20c. Adding central air would help with any humidity issues I might have but I don't believe it would do much in the way of cooling the tank unless I dropped the temp in the basement a significant level, which would make it uncomfortable for me to be in the basement. Hard to work on the tank in my parka! *laugh*

I think I read somewhere that it takes four times more air to equal the cooling capacity of water. I think I might be stuck with the chiller. I have being eying up the Pacific Coast Imports 1/2HP. People seem to have good things to say about it.

[mark]

With central air, it not having to run the house as a freezer, just that it has the capacity to remove heat.

I don't have the lights you're planning (just 2x250W plus the T5s) but with central air at 18° in the summer my sump heater comes on.