My heater stopped working

THE REPAIR MAY EXCEED THE VALUE OF THE CAR.LOL IS IT NOT BLOWING OR IS IT BLOWING BUT NO HEAT?

Mine did the same thing i flused out the cooling system and heater core and replaced the thermastat that had gone bad .my heater works good but nit as good as it use to i think i need to flush the heater core o couple times more to flush the heater core itself i disconected both hose's and i mada a adapter to fit my garden hose to the core itself i ran water through it both directions. Good luck hope this helps out..