There are few central air conditioner problems that can cause it to stop cooling and a few things you can look for on your own to diagnose the issue. Other than the thermostat not being set ...

Best Smart Thermostats for Boilers, Furnaces, and Central AC Systems The fourth-generation Google Nest Learning Thermostat ...

Consumer Reports' tests reveal the best AC controllers to remotely control window ACs, portable ACs, heat pumps, and mini-splits.

and cheap window AC units are flying out of the local big-box stores. Not all of these discount units undergo rigorous QC before sailing across the Pacific, though, and a few wonky thermostats ...