Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
tado Smart AC Control - Control any AC from anywhere with your phone
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
LOOFT- A/C Redefined - Comfort Automated
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.
Mistbox - Save 30% on your air conditioning bill