Here are some more important questions to ask a solar installer!
4. Do you subcontract any part of the installation? If yes, to whom? What are their qualifications?
You don’t want to hire someone and then see a vehicle with a company logo you don’t recognize show up in your driveway, leaving you scratching your head and wondering what’s going on. It’s OK if your installer subcontracts — many companies use a network of installers across various jobs — just be sure the subcontractor holds the proper accreditations.
5. What are the electrical codes in this area, and how do you adhere to them?
This varies by state. Know your codes beforehand and make sure the installer knows them all as well.
6. What are the names of the module and inverter manufacturers whose products you use? What are their warranties?
Get a run-down of what will be used and then look the companies up online to make sure they’re reputable. Check out reviews and/or testimonials.