Getting a motorized garage door opener with a battery backup and Wi-Fi changes how you leave the house every day. You get quiet belt drives, smartphone alerts when the door is left open, and a backup battery that actually works during a blackout. Swapping out an old unit usually takes a professional a couple of hours, and the best time to buy is during the Father's Day tool promotions in June when hardware stores drop prices on home hardware.
Before you commit to a price, get more than one quote from local installers. Labor rates vary widely, and some installers bundle haul-away of the old unit while others charge extra. Checking local pros keeps the total cost closer to that typical $500 mark.
That 0% window is a hard deadline, not free money, so make sure the balance is paid off before the 18 months are up or standard interest rates will kick in on what is left.