This is a Noritz (RC-7651M-A on demand water heater that is only 2.5 years old and when taken out of one of are homes recently for a remodel was working perfectly (replumed the intake and outlet-so this no longer fit the changes) . Originally cost 3000+ and selling for only 500.00 OBO. The yellow mark on the front will come off easily or you can just put the controler back in that spot. If your looking to upgrade this would save you a lot in doing so, this price is less than have of the old stile water heaters. Need it gone for the space in my storage shed. Good luck in your searches and thanks for looking