No. of Recommendations: 3
2 of the quotes are close in price. The 3rd is much higher. Looking at all the samples I sure can’t tell difference. Again research shows northern climates utilize the argon more, south Florida etc - air. Really the choice is up to us.

Tuni, as you know, I'm here in S FL as well. In my last place, I replaced the existing windows with impact windows after Wilma. In my current house, I have mostly impacts, but a few standard windows (mostly patio sliders, $$$) that we shutter up for storms.

I would encourage you to get a quote on straight up impacts without the air/argon gap. In my experience living in FL, the seal will eventually degrade, and you'll end up with a fogged window due to our humidity. But since impacts are rather expensive, that's not a cost you'll want to eat.

So why do I suggest the regular window? Because the impact construction is two layers sandwiched with a plastic polymer interlayer. That polymer is actually quite a good insulator. Sure, not as good as an air gap, but far superior to old single-pane windows. When I went from single pane to PGT Winguard at my last place, the heat transmission of the windows was dramatically improved. Adding an air gap and another pane of glass just strikes me as an additional cost that you're unlikely to recoup anytime soon.

(message me if you want the name of the contractor we used, though it was ~10 years ago)
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