some readings

来源: 于 2018-06-04 19:28:20 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

https://asm-air.com/hvac/hvac-installation-cost/

https://www.centralairconditionerprice.com/

check your county and/or local energy supplier for rebate of replacing really old ac units.