I feel the same way as I turn on the heater to deal with Canadian Winter - this time, it has been late, but has come back with a vengeance. In my view, it takes longer than expected. Perhaps, do you need to push up the temperature - I set it to 24 degrees celcius initially. My morning ride takes about 15 minutes. It takes anywhere between 5 to ten minutes to reach comfortable level of heating. I do not set it to auto (it's too noisy), but set it to 3 or 4 bars.