We do charge a standard diagnostic fee for a Ditter professional to perform a thorough analysis of your cooling or heating system in order to determine the extent of a problem. Our expert technicians can identify the age of the equipment and the extent of wear or damage. We pride ourselves on being honest with customers and advising them on their options so they can make a wise decision about their investment in repairs or replacement. If your furnace or air conditioner won’t start, or is making unusual noises, call us at 763-200-5055 or request an appointment.