Tried it out using a hotplate, and it worked. It wasn't that hard holding the temp I needed to be at and it worked flawlessly.Only reason I gave it 4 stars is I wish they had included the adaptor to link the evaporator directly to the copper tube like they show on the pictures. I tried to find one, but it's got weird threads on the 1/2" taper side, 3/8" tapered worked just fine.