Hello my name is gloria412 recently had 80,000 BTU install as well as a digital honeywell a/c and gas coming on at same time is themostate default

Hello my name is gloria412 recently had 80,000 btu install as well as a digital honeywell a/c and gas coming on at same time is themostate default
Do I need a different kind of digitable themostate for my gas trane 80,000 BTU recently installed

How do you know the a/c is coming on? Is the outside condenser coming on?