I picked up an oil based heater at target for 50$... I keep the room thermostat at 65 and the electric heater at 68... this gives me enough heat to keep all of my cool sides above 77... I use the thermostat on the heater itself but since i keep it so low it does the trick... If thats the only source your using you might wanna play with it and see where it needs to be set at... Might be higher might be lower.