Today I arrived and met with Mrs Tennison. I completed the heating evaluation today of 3 units. I began by verifying the units are all safely operating and they perform well. I flushed and treated all indoor units today. I washed the outdoor heat pumps as well. While inside at unit 1 I cleaned the flame safety system while evaluating safety. I changed customers filters today while onsite provided by customer. Upon departure I left units 1 and 3 in auto mode and left unit 2 in heating at 72. It was very nice meeting you today, I hope Mr tennison recovers quickly!