Heat Pump Water Heaters (also called hybrid water heaters) are powered by electricity, but are much more efficient than conventional electric water heaters that exclusively use electric resistance to raise the temperature of the water.
Air source heat pumps have been used in warmer climates for decades, and due to a recent technology revolution are now a great heat source in New England's cold climate. These clean heating and cooling technologies can greatly reduce your greenhouse gas emissions, reduce your energy costs, and improve the comfort of your business.
Ground source heat pumps are the most efficient central heating and cooling technology available, able to provide three or four (or more!) units of heat for every unit of electricity used. They can provide some hot water too.