subject: Electric Saver 1200 Vs KVAR Box [print this page] KVAR energy controllers are handy devices that not only assist the domestic user but have a broader effect of ensuring the electricity being generated in our country is used efficiently. At the same time, the Electric Saver 1200 or KVAR box will ensure that you have a few extra dollars in your pockets out of the savings you will make from lowering your electric bill.