Curtains (Length if CH radiator under window)

I have vertical blinds and horizontal ones in different parts of the h ouse. I did have floor-length curtains that covered one or two radiators when drawn, so used to leave them open to expose the radiator. But since some of us older people are no longer getting the former winter fuel allowance, I have cut those curtains shorter and hemmed them up to sill length. I make sure I pull them across as soon as the sun goes down, and I notice the house is a lot warmer.
I did prefer them long - but needs must......

Floor to ceiling curtains on all patio doors. Cill length above radiators so we don’t lose heat. Roman blinds at some windows too.

You will think this is weird I know. In my own bedroom I cut the long curtains to about 4” below top of radiator, then when I close the curtains, I tuck that 4” behind radiator. All the heat comes into the room,not wasted into the gap behind the curtains . Husbands room exactly the same, but bought his already that length. Works well ,looks ok, saves money, win win…

All our radiators except in one small bedroom are not under a window, so I have floor to ceiling curtains in every room except the small bedroom, bathrooms and kitchen etc.

I like the look of floor to ceiling curtains but they also serve as extremely efficient insulation. The rooms warm noticeably once the curtains are drawn on cold winter days and nights.

Our curtains stop a couple of inches above the radiators. In the cold months I tuck the curtains on to the windowsill so the heat stays inside the room. Not very elegant but does the job.

In my dream renovation the radiators will be removed completely and we’ll have heated skirting boards installed, but I need to win the lottery first!

In the lounge my curtains fall just above the radiator. I have shutters so just adust those snd leave the curtains open unless it's really cold. In the bedroom I have long curtains and the radiator is on another wall.

Great question! When hanging curtains over radiators, the length is crucial for both aesthetics and heat circulation. For a polished look, consider these tips:

Sill-length curtains (just below the window) prevent blocking heat while maintaining style.

Thermal-lined curtains help retain warmth without needing full-length fabric.

As an alternative, window shutters or blinds can be a sleek, radiator-friendly option—no fabric to interfere with heat flow, plus they offer precise light control. Many find custom-fit options work best for tricky window layouts like this.