Our split level home has h/w alum. baseboard radiators in 3 zones. The family rm is on a slab. We would like to replace the f/r zone with cast iron b/b. would we use the same lengths of cast iron baseboard radiators as the alum? the c/i baseboard is 10" h vs 8" for the aluminum.

We will need to replace our 17 yr oil fired boiler soon, how can we compare the long term costs of oil h/w vs LPG h/w cost to operate? ( buy unit and fuel)? We are considering LPG because the cost of fuel oil has nowhere to go but up.

Thanks for any information.