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.
Founded in Swiss company Runtal touts its combination of engineering expertise and architectural design; its Runtal Arteplano Radiator is shown here in anodized aluminum. Contact Runtal USA for specifications and pricing.