Hydronic heating doesn't blow allergens and contaminants around your house or give them a place to hide in the ductwork. There is no trade-off between healthier air and a more comfortable living space.

The greenest options for eco-heating systems are either water-source heat pumps (which take heat from a large body of water) with a heat battery or a ground source heat pump. Both of these pumps operate with equal efficiency night and day.

A central heating system has pipework and radiators which are connected to a boiler. The boiler provides the heat and the pump moves heated water from the boiler through the pipework to the radiators, and back to the boiler for reheating.

Central heating gets its energy source from a variety of different places including solid fuels (such as wood), water/steam, petroleum and other liquids, electricity, heat pumps, and natural gases. The most common forms of central heating are electricity and gas because they are the easiest to maintain.