It is a common misconception that it takes more energy to heat up a cold house than it does to keep a house warm all the time. Turning down the thermostat will always save energy, as will turning up the air conditioner temperature setting. Heat moves from hot to cold, and the rate of heat transfer increases with greater temperature differences between inside and out. Smaller temperature differences between your house and outside generally means you'll lose less heat (or air conditioning) from inside the house to the outside. Therefore, you will save energy by only heating or cooling as much as necessary, for the occupants and time of day. If your concern is comfort, or having to wait for your house to heat up or cool down after you get home, invest in a programmable thermostat, it can begin to heat or cool your home 30-60 minutes before you get home, so the temperature is just right when you arrive. Through proper use of a programmable thermostat (using the 4 pre-programmed settings) you can save about $180* every year in energy costs for a typical, single-family home. Learn more at energystar.gov/pts. *The $180 savings assumes an 8 hour daytime setback and a 10 hour nighttime setback of 8 degrees F in winter and 4 degrees F in summer. Visit our Programmable Thermostat Calculator to see how much you can save.
The simple choice for energy efficiency.
energy efficient products
ENERGY STAR products are independently certified to save energy without sacrificing features or functionality. Saving energy helps prevent climate change. Look for the ENERGY STAR label to save money on your energy bills and help protect our environment.
Find ENERGY STAR Products Energy Savings at Homes Take the Pledge Learn about Climate Change
ENERGY SAVINGSat home
energy savings at home
Improving your home's energy efficiency with ENERGY STAR can help to lower high energy bills, improve comfort and reduce greenhouse gas emissions. Learn about the many ways to save in your home and track your progress with "My ENERGY STAR" - your new dashboard to savings.
Start Saving Now Take the Pledge Home Assessment Tools Seal and Insulate Your Home Learn about ENERGY STAR Products Learn about Home Performance with ENERGY STAR
ENERGY EFFICIENTnew homes
energy efficient new homes
A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict requirements set by the US EPA. ENERGY STAR certified homes use 15-30% less energy than typical new homes while delivering better comfort, quality, and durability.
Find Builders and Incentives Home Features and Benefits Homeowner Testimonials Resources for Partners
ENERGY STRATEGIES FORbuildings & plants