Super Easy to Assemble. I did it myself! My brother came by later(late as usual lol) to help screw in the front door. Wow! Thanks lol 
I’m super happy with this unit, great heat and excellent shipping quality! You will spend more time unpacking this then assembling...its that easy!
It comes in 3 boxes but don’t be put off by that as I was TIL I opened these boxes And Voila it’s all but assembled already!