Blowing cold air

<p>I bought a Safeway fan heater from clicks, in a space of a month, I've changed it 3 times because the fault is always the same. The heater blows hot air for 3 days, 4 if you're lucky then from then on only cold air blows. </p> <p>I just find it annoying having to return different heaters for the same fault. Makes me wonder if we are being sold rejected items? Maybe that's why the price was brought down?</p>