For residential customers, heat pumps can be the most efficient, cost effective and healthy way of meeting heating and cooling demands. Heat pumps use hydronic (water in pipes) heating and cooling in the house floor and walls to maintain a comfortable temperature. The water flowing through the pipes at suitable temperature are heated in winter, or cooled in summer using the ground. Even at surface level the temperature of soil can be enough to cool a house in the height of summer and heat that house with the same efficient installation, when engineered well. Through the use of low temperature energy distribution, and fresh air ventilation, the serious health issues associated with ducted air conditioning can be eliminated. Exchanging thermal energy over the seasons, while creating extremely comfortable environments.