I got a new heat pump this summer. The installers set it so that at 35 degrees outside temp, the system will switch over to gas heat. I'm concerned this is too high a temp, and will result in me paying for more gas than I need to (I live in an area where electricity is cheap).

I don't see in the manual how I can change this setting. Is this something one of you guys can tell me how to do (if it turns out I need to)?

Thanks in advance!