Insulation provides resistance to heat flow, and the more heat flow resistance your insulation provides, the lower your heating and cooling costs. An insulating material’s resistance to conductive heat flow is measured or rated in terms of its thermal resistance or R-value: the higher the R-value, the greater the insulating effectiveness. The R-value depends on the type of insulation, its thickness and its density.
Check your insulation and install where missing, or replace it if it’s below these “R” values: R-30 for ceilings; R-11 for walls; and R-19 for floors. Many energy providers offer rebates to help cover the cost of insulation as well as programs that offer insulation at no cost for income-qualified customers. If you have an old water heater tank, wrap it with an insulating