With the AC on, why is it still hot by the window? — The heat isn’t being blocked; you just can’t see where it’s getting in

Radiant heat passes straight through ordinary glass — invisible, silent, and working against your AC all day. See how vacuum glazing stops it at the window.

AC on but still hot by the window? Heat enters glass in two unseen ways—solar short-wave radiation and temperature-difference transfer. See the U-value, SC/g and LSG metrics that matter, and how SuperVIG® vacuum glass blocks both.

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Lianfengzhen, Liancheng County, Longyan, Fujian, China, 366299

FUJIAN SUPERTECH ADVANCED MATERIAL CO.,LTD.

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