Andy of www.outdoorfurnace.ca installed a Portage and Main outdoor boiler for me and it has saved me thousands! My average monthly fuel bill for fuel oil and propane on a 5000 sq ft home was $2000. I am currently buying my wood (I will cut my own this year) and it is costing me $600 per month. That is $1400 a month savings. THis outdoor furnace will pay for itself in under 2 years!