I am new to this site but would appreciate your help. I live in an older cinder block and stone house with over 4000 square feet. I presently heating house with a EFM VT oil burner. I believe it is a VT 1000. Oil usage has averaged 2500 gallons a year over last 4 years. I need to change to coal heat. Local dealer was here today. He is not sure 520 would be big enough, may need a EFM 900. He also has a used Losch coal boiler in his shop that he said would work. He said it is about 30 years old but in good shape. My heat is hot water with radiators.
I was thinking of using the 520 but not sure now, does anyone have any suggestions? Thanks.