On 13 May 19, Belair Engineering personnel came to pick up the old water heater that they had replaced on 10 May 19. The installation was satisfactory; however, during removal of the old water heater, the Belair Engineering personnel damaged my walls, two doors, and screen door. The water heater should have been strapped down and covered with bubble wrap to prevent any damage to my property. I called Belair Engineering's management (Don) to register my complaint; I also forwarded 7 photos showing damages via my cell phone; I also had to tell the installer to clean up after completing his work. Suggestions: Use straps on cart/bubble wrap.