What does it keep down tool in temperatures will keep giving heat till 10° -10 that's the question

The EZ-24-EHPB / EZ-24-AHB is rated to continue heating down to an outdoor temperature of -13°F. So, yes, it will provide heat at 10°F and even -10°F, although its heating capacity will decrease as the outdoor temperature gets colder.

If you have any further questions, please call us and we will be happy to assist you.