Usually, the larger the radiator the higher the BTU. However, you could also select a radiator that has a second panel or layer. This second layer can significantly increase the amount of heat given whilst maintaining the stylish look of the radiator.
Geo horizontal radiator: This tubular radiator combines modern design with an effective way of providing warmth. This designer radiator is available in an extremely wide variety of sizes and can be ordered in 208 colours without extra charge.