Looking for a reliable plug and play ATO

[lastlight]

If you're near a cold air return you could always use an old tank down in the basement on some sort of shelf or stand and run the hose through the opening in the wall. I just made a hole in my wall but you get the idea. Bigger volume and not taking up space upstairs.

[intarsiabox]

I just put an empty 20g tank beside my sump on the return side, a short piece of hose from the pump into the return section and voila! I'm assuming you already know but the float switch of what ever brand you choose also goes into the return section of the sump.