Choosing A Contractor

Have adequate, legally required and up to date insurance
Have appropriate certification and training, including proof
Have memberships of relevant trade associations
Have State licensing
Have a long standing business with a good reputation
Have references, awards and a portfolio
Have a clear explanation of your participation and obligations
Have a process to obtain the required permits
Have a professional behavior and appearance
Present professional, clear documentation
Use their own direct labor, not sub-contractors
Have written proposals and contracts
Present the design clearly and completely
Provide a labor warranty
Provide manufacturer warranties
Allow changes of the scope of works
Have Customer Service personnel and service contracts
Present the installation practices clearly and completely
Advise how to manage the system to get the best from it