This is the proportion in between the cooling capacity, in BTU, and the power input, in watts. https://xsqmxpick5iwrhycc3rcuz5t2rhth2netvbw4mf7v4l7t23mvaka.webpkgcache.com/doc/-/s/www.webwiki.co.uk%2Fpalmersgreenhvac.co.uk%2Fair-conditioning-installation.html