Answer:
For business and landlords, every 5 years. For residential homeowners, every 10 years.
✦ Only pay a deposit of 25% for a residential installation and 50% for a commercial installation ✦ Spread the remaining cost with 0% APR and receive a free 10-year solar maintenance plan included with your project✦ Only pay a deposit of 25% for a residential installation and 50% for a commercial installation ✦ Spread the remaining cost with 0% APR and receive a free 10-year solar maintenance plan included with your project