Now that I am putting the final touches on figures on putting in a boiler system ....it now looks like my payback period is going to be 9-10 years given todays fuel costs. Yes I know .....everyone "knows" that those costs will go up not down ....but the safest bet is to use today's costs IMO. So ....I have to ask what are everyone elses payback periods etsimated to be? 9-10 years could mean that I am not even in this world to realize those savings. Which brings up another topic ....can anyone speak to resale value of a property with one of these systems installed ....just in case my wife needs to be selling this property without me helping at a later date? Thx, RH