I arrived for a non member thermostat installation. I spoke with the homeowner and we discussed the system and how it operates and that we wanted to install a thermostat that he had. I checked the system and found it to be a 1 heat 1 cool system. I installed the thermostat and set all scheduling programs and set up the remotes sensor that was supplied with the thermostat. I cycled the thermostat in all modes and found the system to respond to the commands given. We also decided to sign up on a blue club plan so we can tune up the system twice a year and keep the system running at its maximum performance. If you have any questions or need anything please contact us and we will be here for you anytime. Your friends at Interstate. Jake Kring.