I've just installed a 400w wall panel heater in one room as it's rather chilly there and we have a relative staying for a few months over winter.
It goes pretty good - but man it gets hot on the surface, a lot warmer than I expected. With it being so close to the wall, I feel a little uncomfortable with how hot it does get, and how hot the wall and surrounding area is going to get if it's left on for extended periods.
Wondering if anyone who has one could comment on how they've found theirs, and how hot they actually get? I don't have an accurate way to measure the surface temps, but you can't touch it for more than a few seconds without it feeling like it's going to burn you.