I have a Lennox two stage furnace and two stage air conditioner paired with a VisionPro thermostat. Is there an easy way to make sure the air conditioner is runing in both low and high stage? The thermostat appears set up properly and the settings on the furnace as well. I am having my annual air conditioning sevice tomorrow. I want to make sure I am getting the comfort/efficiency I paid for. Thanks in advance for your help.