How radiators heat a room
Despite the name, most radiators heat mainly by convection: air is warmed as it passes over the radiator and rises, drawing cooler air in from below. Blocking that circulation reduces how much heat reaches the room.
Common culprits
Heat can be held back by:
- Sofas and beds pushed against radiators
- Radiator covers with small openings
- Shelves directly above the radiator
- Long, heavy curtains hanging in front
- Clothes drying on the radiator
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Making it work
Leave a gap between furniture and radiators where you can. If you use a cover, choose one with a generous open front and top. Thermostatic valves also need free air around them, or they may switch off too early.
