by Mark Hansberger on April 11, 2013April 11, 2013 Why Air-Source Heat Pumps Are A Great Choice In Warmer Climates One of the most efficient heating and cooling systems for Southwest Arizona are air-source heat pumps. This most common variety of heat pump uses no fuel other than a modest amount of electricity to provide […]Read More Filed Under: Air-Source– Heat Pumps Tagged With: air-source heat pumps– Arizona– energy efficiency– indoor air handler– most efficient heating and cooling systems– outdoor condenser– Yuma