This company I am about to buy windows from is giving me triple-pane windows with krypton gas for the same price as double-pane with low-e argon. The salesperson brought some window samples to my house last week to show how krypton gas stops the heat from a heat lamp from passing through. He held the heat lamp to the regular sample and I felt the heat instantly when I put my hand under the sample. He switched to the krypton sample and I felt absolutely no heat at all.

I want to go for the triple-pane, but the president of my condo's association is pushing Pella windows really hard. He argues that krypton gas might have kept me from feeling the heat from the lamp for a few minutes, but, eventually, the heat would have gotten through just the same.

His argument boils down to krypton not being all that it's sold to be, that's it's just a gimmick. I'd like to hear other people's answers on this.