Durabuilt Windows & Doors

I purchased a new home that installed durabuilt windows about 3 years ago and the windows were great until recently I noticed 1 of the windows had condensation in between the triple glass panes and when I called durabuilt they told me it’s likely due to the seal being broken and they would replace the glass under warranty but we would need to pay $200 for the labor as labor warranty is only for 2 years. Well now a few weeks later we notice that this is happening to 2 other windows on the same side of house. My question is why is this happening unless the window units are not sealed property during manufacture, and if this is a defect in the craftsmanship of durabuilt windows we should not have to pay anything out of pocket to get them fixed. We’ve owned other properties with windows made by other window companies and have never experienced this. I will be contacting durabuilt again but I’m hoping someone contacts me from this review to rectify the situation. I’m also concerned that even with the replacement of the glass and the seal this would happen again and again every 2-3 yrs.