Is it good to use air energy heat pump for heating in Shandong, does it save electricity and is it durable? Will it often break down?

Specifically how much electricity you need to refer to your school's building, whether or not there is insulation, and the design and installation of air energy equipment has a lot to do with the specific electricity about a heating season 25-40 degrees / square meter. Equipment life of about 15 years, as to whether it will be often bad need to look at the quality of the equipment and the level of installation.