Repairs that run hot and cold It’s seldom very easy to get to any HVAC (heating, ventilation, air conditioning) systems and may require the dash to be taken apart. Any job that entails that much work just to access the system isn’t going to be cheap, and if your heater suddenly decides to refuse to change vent output or switch from full heat to cool, you may be in for major sticker shock if your ride’s warranty has expired. Depending on the equipment, most car and light-truck dashes involve at least eight hours of labour to remove and replace them, and with shop rates at a conservative $150 per hour, well, the math can be painful to do.