A: Yes. Most of the manufacturers will warranty their products and provide after-sales service. Inverters are usually warranted for 5 years. Most of the manufacturers will offer a warranty upgrade to 10 or more years at an extra cost. Photovoltaic Module manufacturers will offer two different warranties. They will warrant the performance of their modules for 25 years or more and the material for 10 or 12 years. Based on our experience, a well designed system installed by experienced installers will most probably not arise any issues for the warranties to be needed.