Home Insulation & U-Values. Noadswood Science, 2011. Home Insulation & U-Values. To describe the effectiveness of insulation methods and to understand what an U-Value is. Energy Bills. Which of the following houses would you expect to have the highest energy bills?.
Noadswood Science, 2011
Payback time (years) = cost of insulation (£)
savings per year in fuel costs (£)