When should you replace your home insulation

In areas where temperatures rise or decrease dramatically home insulation has a large impact on your energy bill . Your home insulation keeps cold or warm air inside your house thus your heating and cooling system will work less often . According to Energy star , proper insulation and weather stripping can reduce your energy bill up to 20% per month . If your insulation is older than 10 years most highly rated home insulators say that it needs work . When shopping for new insulation ask about the R value of the insulating material used . The R value is the measure of the thermal resistance and the higher the R value the better . Insulation sheets with higher R value cost more but are more effective in reducing your energy bill and shorter payback periods .