Histogram correction. You may notice that the histogram and bell curve is a little out of sync, this is due to the way the bins widths and frequencies are plotted. If you have a bin width of 20, and the bin value is 40, the corresponding frequency is all values between 20 and 40.
I had my replaced for $150 last year (It is my third Radiator). Here is the JC Whitney Catelog for Radiators (Please note Installation will be extra): http://www.jcwhitney.com/webapp/wcs/stores/servlet/Prod...
The average cost for a new furnace is approximately $1,400 for the unit and includes no other elements costs which are used for installing the furnace. The price of a new air conditioner is between $600-$3,000 which depends upon the brand, model and size.