Purchased all windows and doors from Pella for our home rebuild in early 2020. We discovered many problems with installation, missing hardware, broken mechanism. Material of frames are inferior quality, many are chipped. Upon calling Pella about what our warranty covers they would not speak to us since we went through a GC which we have since fired. Instead, they sent a rep to investigate and after weeks of follow up we get a quote for $2000 + labour to replace missing parts. (After spending $40000 on their product, they mark up the cost of parts by 10x) I consulted the Pella website to order parts myself but they don't deliver to Canada. You are certainly at their mercy.
Please do yourself a favour and go somewhere else.