Keeping an AC alive through a Dubai summer.
Setting a thermostat lower does not cool a room faster. Here is the setting range that keeps a Dubai home comfortable without punishing the DEWA bill or the compressor.
Everything that fails in July was already failing in March. A two-hour pre-season check is the cheapest insurance you can buy.
The generic answer is once a year. In Dubai that is wrong for most homes — here is a realistic schedule by system type and usage.