Does anyone have a recommendation for a heat pump with gas backup? Our thermostat isn't working properly, we had a guy come look at our furnace and he messed around with stuff and now the furnace will runa dn won't shut off. It will be 100 degrees in our house and we have to manually turn off the furnace because it isn't controlled by the thermostat anymore. So we are assuming it's the thermostat or the guy that looked at it didn't hook something back up right. We need an upgrade anyway so we are just going to replace the thermostat and need some advice...Thanks!