Cost-benefit analysis of improved air quality in an office building

R. Djukanovic, Pawel Wargocki, Povl Ole Fanger

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


A cost-benefit analysis of measures to improve air quality in an existing air-conditoned office building (11581 m2, 864 employees) was carried out for hot, temperate and cold climates and for two operating modes: Variable Air Volume (VAV) with economizer; and Constant Air Volume (CAV) with heat recovery. The annual energy cost and first cost of the HVAC system were calculat4ed using DOE 2.1E for different levels of air quality (10-50% dissatisfied). This was achieved by changing the outdoor air supply rate and the pollution loads. Previous studies have documented a 1.1% increase in office productivity for every 10% reduction in the proportion of occupants entering a space who are dissatisfied with the air quality. With this assumption, the annual benefit due to improved air quality was always at least 10 times higher than the increase in annual energy and maintenance costs. The payback time of the HVAC first costs involved in improving the air quality was always less than 4 months.
Original languageEnglish
Title of host publicationProceedings of Indoor Air 2002
Publication date2002
Publication statusPublished - 2002
Event9th International Conference on Indoor Air Quality and Climate - Monterey, CA, United States
Duration: 30 Jun 20025 Jul 2002
Conference number: 9


Conference9th International Conference on Indoor Air Quality and Climate
CountryUnited States
CityMonterey, CA
Internet address

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