my 93 ex takes 13 mins before it starts blowing hot air through the heater, it reaches operating temp in about 5 mins

 

that dosent really make sense cause they are very related but i guess if you had air in the heater core then your car could be at operating temp and no hot air. couple things I would check is for air in the system and also check to see if the thermostat is stuck open.

 

yeah my civic takes a while also to heat up and my air flow is low and just warm.

 

u should be glad my dosent even blow hot air at all

 

dude your in canada and its cold...were getting snow here in jersey so i know your getting it to...if the heat comes on, 15 min or not, than take it.....i would just let the car warm up 10 min before you get in ...its probably your heater core on its way out so save your dough....but i would just leave it and hope your heat makes it through the winter when its not so cold and you can work on it without getting frostbite