![AC Voltage control using MOSFET](https://i.stack.imgur.com/BqC6T.gif)

I am using a similar circuit to speed control a 60 W AC fan using phase control. Unlike a [TRIAC](http://en.wikipedia.org/wiki/TRIAC), supply to fan is given at the start of the cycle. I thought it would minimize the switching noise usually heard in TRIAC controls. 

PWM is from 0 to 10 milliseconds. In low PWM, the MOSFET heats a lot with an inductive load, ***but not with a resistive load***. A snubber using a 0.1 µF capacitor and 100 or 39 ohm resistors is connected across the MOSFET's source and ground pins.

What should I do?