Our problem was particularly troublesome, as our brand of unit was admittingly not normally serviced by CPI because they don't carry this brand. However we pressed forward. Manny and West have made multiple visits in attempts to restore our hot water. Their pursuit and degermation to find the answer in solving this problem was and is most impressive. Thanks to his resourcefulness' and person resolve our unit is going to be replaced by the manufacture. Thank you for your efforts Manny, we are very grateful.