Technical possibilities for the organization of engineering systems of a private house are being more and more zoo meej thiab txaus nyiam nyob rau hauv lub qhov muag ntawm cov neeg siv khoom. Ib txoj haujlwm tseem ceeb tshaj plaws hauv cheeb tsam no hauv kev npaj nyiaj txiag yog lub koom haum ntawm cov cua sov. Kev ua haujlwm ntawm cov kav xa hluav taws xob xa hluav taws xob niaj hnub no tsawg dua thiab tsis ua tiav yam tsis muaj cov khoom siv hluav taws xob tshwj xeeb, lub hauv paus uas yog lub twj tso kua mis ncig. Rau cov cua sov system, cov twj tso kua mis ntawm ntau hom yog tsim