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Effectiveness of Retrofit in Multi-Family Apartments

by Roger Durand, Univ of Houston-Clear Lake, Houston, United States,
Richard C. Allison, (M.ASCE), Univ of Houston-Clear Lake, Houston, United States,
Judith Durand, Univ of Houston-Clear Lake, Houston, United States,



Document Type: Proceeding Paper

Part of: Water Policy and Management: Solving the Problems

Abstract:

This paper reports the results of an evaluation research study of the cost-effectiveness of water-conserving, residential retrofit plumbing devices. By means of a 'quasi-experimental,' equivalent groups design, the effects of such retrofit devices on water and energy savings in multi-family apartments were studied. Installation of the devices was found associated with a water savings of 27% and a savings in natural gas of from 12% to 14% per month. Survey data revealed that sizeable majorities were 'very or somewhat satisfied' with the devices. These findings suggest that retrofit plumbing devices are cost-effective, result in substantial water and energy savings, and receive approbation from users.

Subject Headings: Water conservation | Rehabilitation | Residential buildings | Energy efficiency | Plumbing | Hydro power | Benefit cost ratios

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