URGENT UPDATE: Experts are revealing critical insights on air conditioning use as temperatures soar and electricity prices rise. With electricity costs increasing by 5.5% in July 2023, many homeowners are asking: should you leave your AC on or off when you leave the house? The consensus from three leading experts is clear: adjusting your thermostat while away is the best strategy for energy savings and comfort.
In an interview with The Associated Press, Elizabeth Hewitt, a professor at Stony Brook University, asserted, “If you’re gone for about 15 minutes to run errands, turning off your AC won’t save you anything.” However, for longer periods, like a typical workday of eight hours, turning off the system can result in significant savings.
But there’s a catch. In humid climates like Florida, turning off the AC can lead to mold issues, as the system helps control indoor moisture. Experts advise setting the thermostat a few degrees higher instead of completely powering down. Conversely, in drier regions such as Arizona, allowing the home to warm up by raising the thermostat can be beneficial.
Phelan, a mechanical engineering professor at Arizona State University, noted that increasing the thermostat by just 1 degree Fahrenheit can yield a 3% reduction in cooling costs. He warned that allowing the AC to rest for hours can lead to wear and potential repairs, as systems take 15 to 30 minutes to reach optimal performance after being turned on.
The type of home also plays a critical role in energy consumption. Gregor Henze, an architectural engineering professor at the University of Colorado Boulder, explained that homes with better insulation retain cool air longer, while older houses lose it rapidly. Those in less insulated homes should consider adjusting their thermostat even for short absences.
Smart thermostats are another game changer. Phelan highlighted that switching from a manual to a smart thermostat can result in savings of around 10%. These devices automatically adjust temperatures based on occupancy, simplifying energy management.
As summer heats up, homeowners should also consider simple strategies to keep their homes cooler. Closing blinds, utilizing ceiling fans, and ensuring proper insulation are all effective methods. Henze emphasized the importance of opening windows during cooler nights in dry climates, but cautioned those in humid areas as this can introduce unwanted moisture.
The stakes are high as air conditioning accounts for 4-7% of the U.S. energy consumption. With rising costs and increased energy demands, now is the time to reassess your AC habits.
Stay tuned for the latest developments in energy-saving strategies and ensure your home remains comfortable without breaking the bank.