I have two problems with this heater.1. Durability: I have had this heater for 2 years. It worked great the first winter we got it. After bringing it up from storage to use the next year it didn't work. The fan was no longer working, causing the unit to get hot and turn itself off. We called Dimplex/electrolag and they replaced a part as it was still under warranty. It sounded like a very common problem as they did not even ask for receipt of purchase or even wait for us to really explain the problem. This replacement part worked this winter. Now we are into year 2 and our 3rd winter. After bringing the unit up from storage it has the same problem, just as before. I bought this brand because I thought it was durable and this unit would last me a long time. Clearly it doesn't2. The heat blows from the bottom. However much of the heat gets trapped into warming the carpet and floor underneath the unit. I think the unit would be more effective if the heat was blown from the top.