They can range from one to three years on components and you can purchase extended warranties for receiving units. Dealers should provide a regular maintenance service. Depending on the weather, moving and pivoting points will need to be lubricated once or twice a year. The dish should also be checked to be sure it is tracking on the appropriate arc and that you are receiving all available programming. By performing proper maintenance, your system should run worry-free.
Most dealers are agents for programming providers.
They can get you the programming you want at a lower price. They can also let you know about any new programming available.