Pennington Summer heat is barely one step up from appling County. I was using Summer heat and the house was cold. Started mixing in 50/50 stove chow and Pennington Summer Heat what a difference.Its 17 degree's out and I went from cold to comfortable. I guess ill be thinning out my left over Penningtons with Stove Chow, Hamers and Somersets. Other alternative is just use Penningtons in Spring and Fall when temps above 35 degree's. Regardless got to get rid of Penningtons why I can use there space to by Hamer's at 3.74 a bag.