If you are planning on having your split system air conditioner or heat pump replaced, make sure that your installer plans on running a nitrogen purge though the refrigerant pipes during the installation process, and that the have the equipment and training to pull a deep vacuum. Doing it right is far less common than you might imagine. Please watch our video demonstration of why a nitorgen purge while brazing the pipes together is important.
Below is a picture of one of our installations in progress. Click the image for a
RSES article explaining details of why we do it like this.
Our attention to detail makes the difference.