Natural gas, oil, and electric options are all available ... and mini-splits – and solar energy systems are the most energy-efficient heating systems for colder climates. Modern technology ...

They're the state climate plan's preferred heating oil alternative, and they cost less than oil or electric baseboard heat in all but the most rare of cold temperatures — with increasing efficiency in ...

and its efficiency ratings. Most homes use a forced-air furnace system to provide heat during the colder months. These furnaces burn fuel, such as gas or oil, to heat the air and then distribute ...