I had both existing garage openers replaced with Liftmaster units with backup battery function. Installation went timely and satisfactorily. However, final cleanup left small pieces of trash and when I asked the installer if he would reprogram the cars for the new openers, his response was disappointing - "I would gladly do it but I am running short on time. But it is easy to do" I reprogrammed one car but the Toyota isn't accepting the new units. Disappointed in that but overall happy with the new equipment. Yes, I would recommend them in the future to family and friends!