how much will i save with a high ef: Are High Efficiency Furnaces Worth It? - 01/11/10 10:23 PM
In my blog about window replacements, I made it clear that you'll never get a return on your investment by replacing windows.   So what about furnaces?  If you're replacing your furnace, is it worth installing a high efficiency furnace?  We'll see.
 
Reuben's Old Furnace  
I've already compiled the data from my gas bills going back to 2004 on my Minneapolis home, so this should be pretty simple to figure out.
I use an average of 520 therms per year to heat my house. The average cost of gas in my area has been $0.90 / therm, making my average … (16 comments)