March to May: the pre-summer service window
It is also the season for sand filter media changes. Filter sand in the UAE degrades faster than manufacturers' generic three-to-five-year guidance suggests, because the dust load and near-constant filtration grind the grains smooth and channel the bed. If the sand has not been changed in three years, or backwashing no longer brings the pressure back down, book the change now rather than discovering the problem during an August algae fight. Many owners switch to glass media at this point, which resists channelling and typically lasts longer.
Salt-system owners should have the chlorinator cell pulled and descaled before summer, because cell output drops exactly when demand is about to double. If you are comparing providers for an annual contract, this is the sensible moment to do it; the tamam app lets you put the same scope in front of several verified pool companies and compare their AED ranges before the summer rush starts.