These heaters have been around for 40+ years and are just now making a comeback, they're reliable units if installed correctly. Mine arrived super-well-packaged with all the components needed, I did a dry fit and it all fits nicely, I'll have it safely installed before the weather turns cold and it'll have plenty of oomph to keep a 6m x 6m shed warm. Honestly I think this is the buy I've been most excited about in the last two years.