The kitchen stops working around a tired fridge. Milk goes off a day early, leftovers taste off, and you're stacking takeout containers where the butter used to live. Replacing it changes every single grocery run, every packed lunch, every late-night glass of water. Most installs take two to four hours once the unit is in the house, so the hard part is really the buying and the bill.
The cheapest months to buy a fridge in the US are late November and late May. Black Friday and Memorial Day are when appliance retailers drop prices hardest, and the savings on a $1,800 fridge can easily hit 20 to 30 percent. That's the window to aim for, because a $300 to $500 discount on the same model is real money back in your pocket.
The 0% intro APR is a deadline, not free money. If a balance is still sitting on the card after the 15-month window closes, the regular APR kicks in on whatever's left. Pay it off before then, or at least know exactly how much you'll owe if you don't.