rows of rooftop hvacs on the roof deck of an office tower. vrf or vrv air conditioner for commercial buildings

air appliance background bpo building capacity chilled city climate commercial compressor conditioning consumption cool cooling deck electric electrical emissions energy energyefficient environment equipment exhaust flow heat high hvac industrial industry machine manila many office outdoor outside philippines radiator refrigerant refrigeration roof rooftop rows system technology tower tropical unit variable vent ventilation vrf vrv waste water