Kev tsim kho tshiab hauv cov iav insulating yog txhim kho kev siv hluav taws xob hauv tsev thiab cov tsev. Muab ob npaug rau thiab triple glazing nrog qis-E txheej thiab roj ntim, xws li argon lossis krypton, txo cov cua sov hloov mus. Vacuum-insulated iav, ib qho kev hloov tshiab tshiab, muaj kev ua haujlwm zoo tshaj plaws nrog cov ntaub nyias nyias. Ntse iav insulating tuaj yeem kho nws cov xim raws li qhov kub thiab txias los yog hnub ci, ntxiv dag zog rau kev ua haujlwm. Cov kev nce qib no pab txo qis kev siv hluav taws xob thiab tsim kom muaj chaw nyob sab hauv tsev zoo dua.
