Einhell FW 500 frost guard, 500 W, infinitely variable thermostat, antifreeze (tool)
With just 2 kW / h within 24 hours this little thing is keeping my heat pump space outside the house at 7 ° C (-18 ° AT), all at the lowest level. Who wants to heat large spaces, of course, was to buy large appliances. I've also tried to warm up my g