Cokey wrote:

I need a tubular heater for a new airing cupboard. The cupboard is
approx 100cm (w) x 100cm (d) x 250cm (h). I see that standard tubular
heaters come in 60w, 120w, 180w etc. What will I need to keep the
airing cupboard nice and warm? Will 60w be enough?

Have you looked at a small dehumidifier (like the £70 on in Sainsburys)?

You get heat out of them (175W input) and they dry the air.

The fan circulates the air too so they work much better than a tubular
heater.