I like that we are able to monitor our HVAC system while it is turned off. It is a great way to be alerted when a problem occurs. It is a little confusing at first, but once you have it set up, it is very easy to use and understand. I wish there were more reports. I would also like to see a monthly report on all of our systems. We have been able to find problems before they even occur. I would recommend this product to companies that have older HVAC equipment. We have been able to find leaks that would have gone undetected otherwise.