We've been with Specialty ever since we replaced the heater that originally came with the house and added an air conditioner. We've had a maintenance program with them ever since. And it has been worth it. They've kept both units working well for many years. Every visit is pleasant. The technicians are careful and considerate of our home. They are thorough with the twice-yearly maintenance. And they always explain their services and costs very clearly. When it comes time for a new heater or air conditioner, we'll be using them.