住宅における湯水混合水栓の設置状況および使用実態に関する研究: アンケート調査による節湯効果のポテンシャルに関する検討

摘要

This report shows the actual situation of the spread and the use of mixing faucet and shower head in housing and the use of hot water, based on the result of web questionnaire. It was indicated that the single-lever mixing faucet recently became widespread about 90%, and that the ratio of using hot water in kitchen differed considerably between about 80% in winter and 20% in summer. It was also suggested that though they did not need hot water in summer and middle season, about a single-lever mixing faucet, there was high ratio of using the lever at the position where hot water was mixed.%本研究では、関東地方の戸建•集合住宅(約3000件)における湯水混合水栓に関してアンケート調査を実施し、以下の知見を得た。 1. 築年が古い物件においてはツーバルブや単水栓などが依然として多く存在している一方、シングルレバー水栓は比較的築年が新しい住宅に限れば、台所•洗面ともに約9割と広く普及している。