When it's in the 80's during the day and the 30's at night, you know you're in Texas during the winter. It's around this time of year that, after relying on their heaters for a couple of months, people start needing to switch back and forth from heat to AC, which is harder on the system than running one or the other. So now is a good time to be sure you are giving your HVAC some love, to make sure it will see you through to the surface of the sun, otherwise known as summer in