The EF2 is the most cost friendly of our stoves. Even though this stove is cheaper in price, its quality is still at par with other Enviro models. This stove may not be the biggest or the prettiest, but it still can put out some heat. Rated for 1,500 sq. ft., the EF2 is the perfect stove for someone who wants to eliminate a chunk of their fossil fuel consumption without spending a pretty penny!