I am looking for anyone who can help me reduce the heating costs at my commercial dog kennel.# This is the third winter that I have spent close to 20K heating my 81 run inside/outside dog kennel with propane.# We are already at 16K for this winter and it is only the beginning of March.# All of the extra funds we save from the busy summer months all goes toward paying for the heating costs in the winter.# The previous owners did very little to heat the kennels.# I refuse to let my dogs suffer.# We currently have large Resnor heaters hanging from the ceilings.# The dog doors have been kept closed at night to help keep everyone warm.# Throughout the day I have been opening them every two hours for a 20 minute potty break.# This is the first winter we have done this "closing of the doors" throughout the day....and it still isn't making a difference.# I am looking into installing a CENTRAL BOILER unit for my multiple kennel buildings (3 buildings)...but I have little knowledge about them.# I need to know if it will be a wise investment.# I currently sit on 5 acres. About 2/3 of it is wooded.# At my residence, I heat with a wood-burner in the house.# It's great, we have a furnace just in case we go away for long periods of time...but the cost of propane is ridiculous.# The furnace hasn't kicked on at all this winter.# I need to find a better way to heat my dog kennels, I cannot do any maintenance or up keep to my kennels because I'm spending all of my funds heating it in the winter.# Can anyone give me advice?