If you payout, as an example, for an a/c system that is either too little and not effective sufficient for the location you need to cool down the air, it will certainly not be extremely efficient. http://www.secretsearchenginelabs.com/add-url.php?subtime=1740660617&newurl=http://ezproxy.cityu.edu.hk/login%3Furl%3Dhttps://claptonairconditioning.co.uk/air-conditioning-installation.html