We repair AC in all over UAE. Why should I fill up gas? Filling up all the way is good, waiting till you are on empty is bad. If you wait til you are on fumes this will strain your fuel pump. It will start to suck up all the debris and water at the bottom of your tank. This can clog the filter and lead to you having to replace the fuel pump assembly. This service offers a performance checkup and post gas refill. If there is a leakage, most of the time AC can be fixed onsite but sometimes it might take a longer time. For that, you have to wait for 1 or 2 days.