Especially if your basement is unfinished, you probably do not spend much time down there. And if that is the case, it can be hard to see why you would want to expend the time and money to put in quality insulation in an area of your house that you do not use for much other than storage. But your basement can be costing you a lot if it is not insulated and you probably do not even realize it.
The simple fact is that closing the door to your basement does not summarily cut it off from the rest of your house. The entire floor surface of the first floor of your house is directly connected to the basement and there is a great deal of heat lost through there in the winter. That means that your central heating system will have to work harder to keep the living spaces of your house warm. Plus, the floor will just always be cold.
But putting insulation in your basement can dramatically cut down on the amount of heat you are losing in the winter. Rather than channeling that heat right through your floor and out into the cold soil beyond, an insulated basement will hold the heat and help to keep your first floor warmer. This will reduce your heating costs and it can also cut back on many of the moisture retention problems that basements are so prone to developing.
There are several different ways to insulate a basement and the appropriate one for your situation will depend on a variety of factors. Some insulation needs to be installed on the exterior of the basement walls, but this can be difficult and costly if you are trying to do it on an existing home. Exterior basement insulation usually makes the most sense when you are building a new home.
However, you can still insulate your basement thoroughly with insulation that is installed on the interior of your basement walls. While this may take a few inches of useable space away from you, it will be well worth it in the end.