Ukukhetha isivuli somnyango esishelelayo esifanele kuthinta kakhulu ukulula kwansuku zonke, ukuphepha, kanye nokonga isikhathi eside. Iminyango ezenzakalelayo iphatha abantu abangaphezu kuka-50% abahamba ngezinyawo, okubonisa ukusebenza kahle kwayo. Futhi inciphisa ukusetshenziswa kwamandla e-HVAC ngamaphesenti afinyelela ku-30, inciphisa izindleko. Ngaphezu kwalokho, ihlangabezana nezindinganiso zokuphepha...
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