Barriers to the reduction of domestic hot water temperatures

Abstract Studies have shown that domestic hot water temperatures in New Zealand homes are dangerously high, leading to an increased risk of sustaining a serious burn when contact with the hot water is made. The reduction of household hot water temperatures is a key preventive measure for reducing the risk of injury. This study examined barriers which potentially hinder or prevent the householder from reducing their household hot water temperature. Fifty-eight householders were interviewed regarding hot water usage, knowledge of their hot water system, and attitudes and beliefs about hot water. Concurrent with this interview, a registered plumber performed an assessment of the household hot water system looking especially for the existence of any technological or mechanical barriers which existed. Inadequate thermostat technology and economic factors appeared to be the major barriers to the achievement of a safe and adequate supply of domestic hot water. Compounding this, many people held beliefs about hot water and safety which limited the likelihood of meaningful behaviour change. Ensuring prevention is practical and affordable for consumers emerged as the most important recommendation.