Service Technician Sam Haddad is a professional. Listened to all my problems. Looked at the heating unit ( gas valve was cycling on and off )took his time to look over the entire system. Trouble shot the system and determined the thermostat was bad. He took me over and showed me how he determined the root cause. I replaced the thermostat and the system worked perfectly. You don’t find people like this anymore. Thanks for your service. Job well done.