I am staying in the top floor unit. It was something unbearable during the heat wave last year. I decided to look for an A/C for this summer. I have called for 3 A/C companies to quote. - Urbancooling came with the most competitive quote. I would say it is quite reasonable. We are from HK and so we know how much a A/C should cost - Only one with a demo setup to show how the system works - Hotlines is always responsive I have to give credit to Lisa, Ian and Gary's team, wonderful experience working with them. No hesitation to recommend Urbancooling to anyone.