"martin" wrote | any difference in economy of these things (slimline elec panel heater | vs oil radiator).
Not really, watts in = heat out.
| Both 500w, just wondered if there was any difference. Also, which one | tends to keep better temp regulation, (with built in thermostat) i | was thinking it would be the oil one as it has more of a heat store, | but could be entirely wrong!!
Probably the oil one, *if* they had identical thermostats.
| I want one for some constant background heat for some plants i need | to keep warm in the house!!
You can get electrically heated matting for putting propagators and plant pots on, which might be adequate and would be a lot cheaper to run. Unless your plants are all together in a very small room, a 500 W heater is not going to make a lot of difference.
Perhaps a good plan would be a plastic mini greenhouse in the house, with a low wattage tube heater[1] in the greenhouse. Most are designed for humid environments, which standard wall heaters aren't.
Owain
[1] From any electrical wholesaler eg
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W per foot.