I try as hard as I can to buy American made products. Johnson Controls A419 is a pretty popular unit, I have one it works great. I also bought one of the EBAY temp controllers because I was curious how they compared to the more expensive stuff. It works really well, though I do support your desire to go American. I've also bought a lot of things from Auber and like the support the owner gives and he does back his products, but alas most of it is made in China or elsewhere, not here.