An in-depth guide on how to calculate how much BTU heat output you need for your room. Alternatively, you can check out our heat output calculator online at either; http://www.theradiatorcompany.co.uk/heat-output-calculator/ http://www.supplies4heat.co.uk/resources/heat-calculator/ For more information on heat output please also see; http://www.theradiatorcompany.co.uk/help-faqs/ Music from https://www.bensound.com