Isifudumezi somoya siya kufakwa kumbhobho ongqukuva emva kwesihluzo somoya esingenayo, ngaphambi kokungena kweyunithi ye-HRV.Yenzelwe ukuthintela imowudi yokunyibilikisa, okt ukuphepha ukwenza uxinzelelo oluncinci olubi ngaphakathi.I-heater ilawulwa yi-thermostat, iguqulela phantsi kobushushu obuphantsi bangaphandle kuphela.