have no heat/1994 s420

[meldwyer]

/ i have a 1994 s/420 recently my heater hose broke on my car i had it replace with a new one and had it refill with new fluid just the other day i try to use my deforster and notice that it blew cold air out so i try the heater and it blew cold air can any one tell me what mite i can do to restore my heat,,,,,, or what could try to get it working againe the way that it,s should be help,,,,,,, meldwyer 94 s/420,,,,,