Energy Saver provides energy efficiency and renewable energy information to U.S. consumers, including families, homeowners, renters, and drivers. Heat & Cool Energy Saver offers information on your options for home heating and cooling and water heating, as well as tips for using your systems efficiently and reducing your bills. Topics ThermostatsDuctsHome Cooling SystemsHome Heating SystemsHeat Pump SystemsWater Heating Weatherization Home energy audits and weatherization efforts such as air sealing and insulation should be some of the first steps when improving the energy efficiency of your home. Topics Home Energy AuditsAir Sealing Your HomeInsulationMoisture ControlVentilation Home Design The home design or remodeling process is a great time to improve energy efficiency or consider adding a renewable energy system. Topics Energy-Efficient Home DesignLandscaping for Energy-Efficient HomesTypes of HomesWindows, Doors, and SkylightsCool RoofsPassive Solar Home Design Electricity & Fuel Electricity and fuel power our homes and vehicles. Save money and energy with efficient purchases and habits. Topics Appliances and ElectronicsBuying and Making ElectricityLighting Choices to Save You MoneyVehicles and Fuels Do-It Yourself Savings Projects Take energy savings into your own hands by following our step-by-step instructions to home energy efficiency improvements. Learn more.