Instruct: Classify a given Amazon review as either positive or negative.
Query: all 3 have failed!

I bought 2, 1 started acting up less than 2 weeks later. Heater would never turn off even if i turned the temp all the way down and the heater light would flicker too. I had a replacement shipped to me that lasted about a month. The thermostat is not accurate at all, set it to 81F, actual temp is 78F. Set it 83F, temp is 78F. Set it at 87F, temp is 80F. The second heater (the other original one) thermostat is not working either but, its working in the opposite way. Set it to 78F, temp is 82F. Set it to 80F, temp is 86F.I seriously recommend looking for a different heater brand!