I like it at 65 also. I feel like if I'm cold I can just wear my warmer clothes. Unfortunately Max is not like that. He is going to be 15 next year so I don't want to push it. I'll keep it on 70 for now but in one week I'll be able to turn the heat off. I'm going to keep the air conditioning on at 75 degrees this summer. That's like right in the middle of what's comfortable for cockatiels.