I've mentioned before that I heat my house using a 1.8 kW duct heater in the MVHR ducts, and a 1.8 kW radiant heater on a wall by the front door. Both are controlled by time switches so as to operate for [some varying part of] the E7 period overnight. The idea is to inject enough heat into the structure of the building overnight so that the temperature stays above 20°C during the following day (or whatever other temperature target I've chosen).

The radiant heater is a Steibel-Eltron IW180, which looks the same as an IW120 but has three 600 W bars. SWMBO has decided that it might be nicer to have some kind of panel heater or radiator instead of it, in approximately the same place. I'm happy to go along with this (SMBO), so I'm looking for any suggestions as to which heater to pick. I don't know much about the subject. I'd like wall-mounting, or wall stabilised anyway. Radiant panel or convector? Desirably no fan or other noise. Any form of built-in storage worthwhile? Any thoughts about reliability of particular models or brands? Dust traps? Appearance? Oh and if it has any smarts, then are they accessible to third-party control systems such as Home Assistant or IFTTT etc?

Posted By: WillInAberdeenIf you are trying to heat the structure rather than the air, for storage rather than immediate comfort, then a convector heater might not be the best choice?

Indeed, I'd prefer a radiant heater but I think even 'radiant panels' rely on convection as well. The convection into the lobby also gets to the upstairs landing directly and is moved around by the MVHR as well. So it's not a disaster.

Thanks for the suggestions; it's given me some more words to search for. Guarantees seem to vary a lot, from 2 years to 25 I've seen!