We guarantee that your furnace or A/C will heat or cool your home within two degrees of the thermostat or your money back. We got a great deal on high quality equipment. The crew was great! When our A/C died in August, an employee was at our house in minutes to check it out. When installing the new equipment, the crew was polite, efficient, and quiet. They didn't waste much time! They also did an excellent job using mats to protect our floor and always cleaning up after themselves.