Price difference between a 80 percent and a 95 percent furnace is less than a grand. Now obviously thats my price on equipment and big companies will have things marked up more and probably have a bigger price difference. But still with the current price of energy why not upgrade? There is also talks that 95 percent may become the new federal standard for efficiency.I was under the impression that in warm climates with less furnace use, the payback for higher efficiency furnaces did not add up??