In a narrow hallway the question is rarely how much heat a radiator can give, but how far it sticks out. A vertical radiator uses height instead of width, while a horizontal one runs along the wall but may be shallower. Which is better depends on the wall you have and how people use the space.
For the general principles, see our radiator buying guide. This article focuses on the narrow-hallway case.
Why projection matters more than size
Projection is how far the radiator stands from the wall, including valves and any brackets. In a hallway that is only a little wider than a person with a bag, a few centimetres can decide whether the space feels comfortable. Check the projection on the product page and add allowance for the valves.
When a vertical radiator works best
- You have limited wall width but good ceiling height, for example beside a door or at the end of a hall.
- You want to avoid sockets, coat hooks or radiator covers along the skirting.
- You would like the radiator to act as a design feature.
The DQ Heating Cassius vertical designer radiator is an example of this format. Browse the full range in slim radiators or vertical radiators.
When a horizontal radiator works best
- You have a long, clear stretch of wall, such as below a stair or window.
- You prefer the radiator low and unobtrusive.
- Pipework already comes from the floor along that wall.
The DQ Heating Cassius horizontal designer radiator shows the same family in horizontal form. See more in horizontal radiators.
Do hallways need much heat?
Hallways are often kept cooler than living rooms, but they still lose heat through the front door and stairwell. Do not guess the output. Use our BTU calculator as a first estimate and compare it with the manufacturer's output at your system's ΔT.
Checklist before you order
- Wall width, height and the depth of clear floor space.
- Projection including valves, and whether the door swings near it.
- Existing pipe positions and connection type.
- Required output at your flow temperature.
- Finish and whether it suits other hallway fittings.
Common mistakes
- Measuring wall space but forgetting projection and valves.
- Choosing a radiator because it fits visually without checking the output.
- Ignoring where the pipes come from, which affects installation cost.
In short
Choose vertical when width is tight, horizontal when you have a clear low wall, and always confirm projection and output before you buy.