I’m currently running my car with no heat and no a/c. Pulled the ac off in high school, because, you know, 10 hp. 15 years later it’s still off. Pulled the heater out when replacing the harness. I used it maybe twice a year. I kept all the parts. Just felt less parts to cause issues and I’m trying to keep it operable as much as possible while my boys are in the house. Once they’re gone I’ll probably put all the stuff back together, but for now my car budget is small and is used for keeping it running and looking nice.