Benefits

Lower Utility Bills
The U.S. Department of Energy’s Office of Building Technology’s number one recommendation to help consumers reduce energy bills is by adding insulation. Most homes in the United States are not well insulated. Older homes are particularly vulnerable, leading to high heating and air-conditioning bills. Having an energy efficient home starts with proper levels of insulation. When homes are adequately insulated, it takes less energy to heat and cool them than if they were poorly insulated. Insulation in your walls and attic keep the living space conditioned and allow your Heating and/or Air Conditioning source to run more efficiently, thus reducing your energy consumption.
Not having proper Insulation is like going outside without a coat
Insulation works by providing a continuous boundary of the “building envelope,” between conditioned indoor spaces and unconditioned outdoor spaces. Low levels of insulation, plus gaps and voids in the insulation materials, can provide pathways for heat and air to easily flow into or out of a home. Approximately 40 percent of feeling physically comfortable is due to radiant heat exchange between our bodies and the surrounding interior surfaces. Increasing insulation reduces this radiant heat exchange, maintaining a more consistent level of comfort throughout a house.
Sound Barrier
Adding insulation is an easy way to quiet the sound of the cars driving by on a busy street or baffle other noise from outside.
Comfort
Pres. Jimmy Carter used to say turn down the thermostat and put on a sweater. Good philosophy for energy conservation but even better is to keep that thermostat at 72 and still save money on your energy bill.
“Comfort Zone” means leaving the heat where you like it and not having to worry what the power bill is going to look like. Are there areas of your home that have fluctuation in temperature? When you knock on your exterior walls do they sound empty?