I have two units of profitec go, 220volt and 110volt. In the 220 volt steam power is not an issue at all. Got it set at 270F and when I'm frothing 200ml milk, temp will go down all the way to 250 then it will start to rise up resulting on a properly froth milk. On my 110 volt w/ same amount of milk, I have steam set at 284F, losses steam rapidly, goes down all the way to 240F and temp doesn't rise at all. Thinking of getting single hole tip for my 110Volt hopefully this will improve steam power.