A drafty patio door leaks heat all winter and makes your living room uncomfortable. Replacing it usually takes installers half a day, and booking the job during mid-winter lulls gets you lower labor rates while contractors are slow. Get at least three quotes from local installers before buying the door itself.
At around $2,100 for parts and labor, you do not need to pay for everything up front. You can use a zero-interest window to break the total into manageable monthly payments while the work gets done.
A 0% intro APR is a deadline, not free money. If you still have a balance after 15 months, the standard variable rate kicks in on whatever is left, making the door much more expensive.