Analisa pengaruh kualitas udara dan kelayakan investasi proyek penggantian AC pada gedung kantor PT ISM, Tbk - Div Bogasari Surabaya dengan pendekatan aspek finansial

The financial aspect is an important factor in any investment project. purpose of this analysis to be able find out the effect on air quality and assess feasibility a project replacing conventional ductless ceiling AC with Daikin VRV inverter AC. This research was conducted using quantitative descriptive method. Based results study, can provide significant energy savings reduce CO2 carbon emissions, which have better impact surrounding environment. There are several parameters used review investing project, namely net present value (NPV), internal rate return (IRR), benefit cost ratio (BCR), payback period (PP). Some these determine project's feasibility, yielding NPV IDR 791,244,535, IRR 5.95%, BCR 1,185, PP 4.2 years. NPV, IRR, BCR, ensure viability quality, conditioner emissions by 23.5 tons equivalent per year.