i have had 3 of these water heaters model # GCV 40 100 they have all broken with in the past few years no more thatn five years now i am in the HVAC & R field and i have greater knowledge or the product and the thermo couple has gone bad in all of them and now i am trying to repalce it and i have to replace the whole thing. i would like to know where i could get a price for the part.