I am. No dog telling me it wants a walk anymore. When its this cold I stay indoors. That deisel heater is perfect in my living room! Even wih the door open! Its warming the hallway, staircase, and the room its in.
Well its supposed to be tiny if you believe the chinese specs.
I measured it. 1 litre gave me almost 3 hours at max power which is about 4.5KW. Thats with heating oil. 28 second oil. Thats about 70p per litre. Or whatever that is priced at in your country. So not cheap. But cheaper than electricity. And about the same as gas in this green subsidised country.