Reshen LEAWOD na Amurka ya sami takardar shaidar ƙofa da tagogi na ƙasa da ƙasa ta NFRC, kuma LEAWOD ta haɓaka alamar ƙofa da tagogi ta ƙasa da ƙasa a hukumance.
Tare da ƙaruwar ƙarancin makamashi, da kuma inganta buƙatun adana makamashi ga ƙofofi da tagogi, Majalisar Ƙimar Fenestration ta Ƙasa (NFRC) da Shirin Energy Star na Ma'aikatar Makamashi ta Amurka da EPA sun kasance suna ba da shaidar ingancin zafi na ƙofofi da tagogi tun daga 1989. NFRC, wata ƙungiya mai zaman kanta wadda ta amince da sabon lakabin aikin amfani da makamashi a 2005, sau da yawa tana buƙatar takardar shaidar ingancin zafi ta NFRC don samfuran ƙofofi da tagogi na Amurka. Bugu da ƙari, takardar shaidar NFRC mataki ne mai mahimmanci zuwa ga takardar shaidar Energy Star. A sabon matakin, LEAWOD za ta yi gogayya da ƙofofi masu kyau na duniya da kamfanonin Windows, waɗanda aka yi a China.