Many things can change the final price. The size of your home plays a part. Bigger homes often need bigger systems. The type of system you pick also matters. Some brands cost more than others. How hard the install job is can also affect the price.
It is smart to plan ahead. Always get a few quotes from different companies. This helps you compare prices and services. Ask what each quote includes. Think about energy efficiency. A new, efficient system can save you money on your power bills over time.