Yeah it's 1/10hp and it's rated for a 50-400 liter reservoir. I'm using a 30 gallon reservoir filled to capacity right now but I'm thinking I can drop it down to 20-25 and get the water even colder. It needs a pump with a minimum 250gph rating and I'm using a 350gph for faster push thru the Ice Box heat exchanger in the duct work.
It is blowing a draft of hot air out of the back. I have a ceiling fan in the room to disipate the warm air but I'm also considering putting a fan on it or use a cheap inline duct blower with an hvac box on the back of the chiller to pull the warm air away and exaust it out of the room completely. Between the cool air it's making, the room exaust, and the ceiling fan the warm air is not a problem right now.
Other nice features are a titanium heat exchanger. Does'nt get any better than titanium for that and it only uses 150 watts!
Being made by Hydrofarm it was really designed with the grower in mind rather than the aquarium enthusiast. Given the right water capacity, it can pull the temps down to 39 degrees! Alot of the aquarium chillers stop at 55. It also has a temperature memory so it can be put on a timer!
So far this thing is rockin'! It's doing the job of an AC with a small fraction of the power that a portable or window unit AC uses.