Good idea to warm up your house and not waste heat energy.
That's what exactly I'm doing right now....lol....GPU mining and CPU mining. Got 8 computers in my room on...lol....My electric heater is on the corner of my room collecting dust....lol
My bro has a tiny little box room and the radiator only half-works so we power up his xbox to heat it haha. Soon warms up.
Be careful when you power up that heater again. Dust can accumulate and set on fire. At the very least scorched/vaporized dust doesn't smell very nice.
I usually use the air compressor to clean it out before I use it. But at this rate of how GPU mining is profitable again, I won't be needing the heater for the rest of the winter...lmfao