this water heater has crossed the barrier of working properly at my residence, we have changed the coil 2 times and this is the 3rd time i have payed for a new coil, thats equal to a cost of a new unbranded water heater, you suffer by not buying this product you suffer by using it and by its maintainence costs, according to SEKMO it gets a 5 star rating which is really not true beware of this water heater company as it can take you for a...