"Expert tips for staying cool and safe during extreme heat waves in multiple states"

As Nashville braces for a heat wave, HVAC technician Robert Burr advises homeowners to consider the age of their air conditioning units, suggesting that older units with R-22 refrigerant may be worth replacing. He also recommends setting the thermostat to 76 degrees when leaving the house and waiting until the evening to lower it, as well as insulating the home and using shades to block out sunlight. With A/C costs averaging nearly $1,800 a year in Tennessee, these tips can help save money on energy bills during hot weather.