Always establish who pays cooling before comparing rents: a chiller-free apartment at AED 5,000 more can be cheaper in total than the alternative. For owners, district cooling contracts (Empower, Emicool) also carry demand charges that run even when a unit sits empty.
This explains the general case. If Chiller-free has come up in a live deal of yours, talk to the team: specific answers, registered numbers, no obligation.