Older homes are known to be less energy efficient than newer models, however, there are several home repairs and renovations that can be made to older homes to make them more energy efficient. Suggested energy efficiency updates include upgrading the HVAC system, sealing the attic and adding insulation, fixing drafty doors and windows, updating the electrical system, installing a heat pump, replacing shower heads and toilets with low-flow models, and fixing leaky faucets. Learn about these repairs that can reduce energy consumption and monthly utility bills.