Do not pay for work in advance. Read any contracts carefully. Once you have signed you are committed, so be sure you understand what you are agreeing to and responsible for. Never sign a blank form or piece of paper. This protects you from overpayment should you have to pay subcontractors who were not paid by the general contractor.
Warranties vary with manufacturer and contractor.
Collect the warranty cards from any parts used and file them in a safe place so you'll be able to find them if the need arises. All Rights Reserved.