General Performance & Efficiency
Are vertical radiators any good?
Yes, absolutely. They are just as effective as horizontal models, provided they are correctly sized (in terms of BTU) for the room. Their main benefit is their space-saving design and modern aesthetic.
Are vertical radiators less efficient?
No, this is a myth. A radiator's efficiency is determined by its BTU output (heat output), not its orientation. If a vertical radiator has the correct BTU for your room, it will heat the space just as effectively and efficiently as a horizontal one. In fact, since they are less likely to be blocked by furniture, their practical efficiency is often better.
Do vertical radiators heat up faster?
This depends on the material, not the orientation of the material. Aluminium vertical radiators will heat up much faster than steel or cast-iron models, just like their horizontal counterparts.
Sizing and Buying
What is BTU, and how do I calculate it?
BTU stands for British Thermal Unit, which is the standard unit of measurement for a radiator's heat output.
You calculate it using an online BTU calculator by inputting your room's dimensions (L x W x H), window size, glazing type, and insulation quality. This gives you the minimum heat output required for the room.
Do I need a single or double vertical radiator?
The choice depends on your required BTU.
Single Panel: Slimmer, cheaper, ideal for small rooms (bathrooms, hallways) or well-insulated modern homes where space is very limited.
Double Panel: Offers significantly higher BTU output, making it best for large rooms, open-plan areas, or older/poorly insulated homes. They are bulkier but more powerful.
Installation and Maintenance
How to bleed a vertical radiator?
The process is the same as any standard radiator:
Turn off the heating and wait for the radiator to cool.
Locate the bleed valve (usually at the top of one of the vertical side bars).
Use a radiator key to turn the valve slowly counter-clockwise until you hear a hiss of air.
Close the valve immediately once water starts to appear.
Check your boiler pressure afterwards.
How to hide vertical radiator pipes?
The best way is to have a professional plumb the pipes into the wall and run them down to the connection points, minimising exposed pipework. Other options include using decorative pipe covers or concealing the vertical run behind furniture if placement allows.
Design and Value
Which rooms are best for vertical designer radiators?
Any room with limited horizontal wall space: Hallways, kitchens (where cabinets take up low wall space), bathrooms, and dining rooms. They also work well in rooms with large windows, fitting neatly between them.
Can designer vertical radiators add value to my home?
Yes, potentially. While hard to quantify, high-quality, efficient, and aesthetically pleasing designer radiators give a home a modern, finished, and luxurious feel that can be a major selling point and help increase a property's appeal to buyers.