When I got a brand modern plus current central heating plus air conditioner recently I had a option to make when it came to the control unit. My seasoned control component was 1 of those dial control units from decades ago plus it so happened to work with my older central heat plus cooling system unit. But the brand modern plus current central heating plus air conditioner would not work with that seasoned dial control component so I had to get a modern 1. I had a option between a familiar dial control component plus a brand modern smart control unit. I nearly picked the familiar current version of the dial control component because that is what I was used to all my life, however, I decided to make the option plus take a option on a brand modern smart control component because they are the latest plus greatest in heating plus cooling technology! Well, I have to say that as concerned as I was about doing this, I am super thrilled with the option I made. This smart control component not only is convenient as ever to use, but it also saves myself and others money on my daily electric bills. This is because I no longer have to run my central heating plus air conditioner component when I am not home. I can program the programmable smart control component to shut it off when I leave the home plus come on when I am on my way home. Or, I can manually do this from an app on my cell iphone from anywhere in the world! It is totally awesome modern Heating and A/C technology that I am in love with!