Is the purchase cost really all that matters? *
For many families, the purchase cost of their equipment really matters a lot. And it should; if you have a limited budget, chances are you would need to restrain your choices with a few options. However, the purchase cost is not all that matters.
If you are buying an inefficient gas heater or furnace just because it comes with an affordable price tag, you can be almost certain that you are going to lose hundreds of dollars each year on the consumption of energy alone. Try to save more and only buy equipment that allows you to save in the future as well.