There's no mention of temperature range, and at first glance the no-prime/suction ability seems really nice. But to do that i would think there would have to be a really good seal, perhaps the impeller blade (parts 25 and 25a) is made of rubber? That could explain the "This utility pump is designed for intermittent use only." I could be wrong, but it needs to be checked out. I tried calling the tech support number (1-800-444-3353) but they're closed for the weekend.