LEAWOD USA bazi yakawana NFRC yepasirese gonhi uye hwindo chitupa, LEAWOD zviri pamutemo wepasirese gonhi uye hwindo brand kumberi.
Nekuwedzera kwekushomeka kwesimba, kuvandudzwa kwezvinodiwa zvekuchengetedza simba kumagonhi neWindows, The National Fenestration Rating Council (NFRC) uye Energy Star Chirongwa cheUS department reMagetsi neEPA vanga vachisimbisa mashandiro ekupisa kwemagonhi neWindows kubvira. 1989. The NFRC, sangano risingaite purofiti iro rakatora iyo itsva energy Consumption performance label muna 2005, rinowanzoda NFRC thermal performance certification yeUS gonhi nemahwindo zvigadzirwa. Uye zvakare, NFRC certification inhanho inodiwa yakanangana neEnergy Star certification. Nhanho nyowani, LEAWOD ichakwikwidza neakanakisa magonhi epasi uye maWindows mabhizinesi, huya, akagadzirwa muChina.