If you own a home or property that has a pitched roof, your maintenance costs should be…zero! The system may require adjusting during the first year, which is completely covered by our comprehensive, 5-year workmanship warranty. The most common reasons for damage are human interaction, and critters such as squirrels or birds. Fortunately, Execon installs a proprietary critter guard system on every installation, included in the price. Our panels come with a 25-year warranty, and our inverter warranty is for 10 years. With proper maintenance, systems can last as long as 40 years!