This video is a good overview of how ductless mini-split systems, both single and multi-zone, work. We are of course talking about heating and
air conditioning systems. These systems are becoming more popular as compared to traditional duct-based house air conditioning and window-based
air conditioning units.
How Ductless Mini-Split Systems Work. Single & Multi-Zone Applications - Younits.com [HD]
http://www.younits.com Video Guide for how ductless mini-split systems work and its' advantages over conventional systems. The ductless mini-split system is ...