BUYER BEWARE!!! ARS came to my house. I showed their rep the water heater I wanted from Lowes on their website. Based on this information their rep priced a water heater and tank booster that I approved. I was not home during the installation. When I got home I saw that they had installed an inferior hot water heater and a mixing valve instead of a tank booster - not what I ordered. This was also confirmed by the AA Co. agent who inspected the installation. The cost difference between what I ordered and what was provided is almost $700! I contacted both ARS and Lowes and submitted a Customer Service Complaint. It has been over one month since the HWH was installed. I have called both ARS and Lowes 4 times to get information. I have been told each time that ARS will have their manager contact me for a resolution and no one has called yet. I WOULD NOT RECOMMEND ARS BASED ON THE TERRIBLE EXPERIENCE!!!!