I bought this inverter on the 23/7/2020 it has worked well. I use a a off grid system it powers 1 fridge freezer, 1 chest freezer my tv 55inch Samsung sound bar and my pond. I have never taken up to it_ full power of 3000watts. I only gave it 4 stars for features due to the fact that my unit did not come with the output relays as advertised. Remember it is very heavy so where you will be putting this unit, it needs to be able to take the weight. I use it with 1200 amp battery bank and charge it with 24 solar cells it does my needs so far but only time will tell.I have now been using this inverter for 1year 3months none stop and it still seems to be working fine. I have used it with my k4 pressure washer and it worked very happy.