We paid the $59 for a service call on our air conditioner/heating system because no heat was coming from our unit. The serviceman was so nice! He took a look at the control unit and discovered that some wires were crossed. He also checked out our air conditioner on the roof. He then reversed the crossed wires and voila! Heat! So simple. No pressure or unnecessary selling of additional services. I love that and I will stick with Cool Touch.