Shop for Heating, Venting & Cooling at The Home Depot. The E-TAC is specifically designed to meet the rigorous demands of hospitality, healthcare and specialty residential installations, E-TAC's smart technology puts energy control and savings into your hands. Backed by the longest standard warranty in the industry, the E-TAC series also offers the most complete line of accessories available. Features include a dry mode, pre-programmed set point limits and IR remote capability (Remote Sold Separately). The E-TAC series is the ideal choice for superior performance and energy savings.