http://tanklesswaterheatertoday.com/is-anyone-using-a-tankless-hot-water-heater-in-their-home-right-now/ everything you need to know about tankless water heaters Thu, 09 Sep 2010 10:00:42 +0000 hourly 1 http://wordpress.org/?v=3.0.1 http://tanklesswaterheatertoday.com/is-anyone-using-a-tankless-hot-water-heater-in-their-home-right-now/comment-page-1/#comment-676 DAN THE AC MAN Thu, 10 Dec 2009 21:36:19 +0000 http://tanklesswaterheatertoday.com/is-anyone-using-a-tankless-hot-water-heater-in-their-home-right-now/#comment-676 a 40 gallon water heater should supply about 30 gallons of hot water before a noticable drop in hot water temperature...you can test it by seeing how many 3 gallon buckets you can fill and dump in the tub before temp drops..if temp drops well before you have filled 3 gallon bucket 10 times,you probably have a bad dip tube..the dip btube is a plastic tube that carries the cold water to the bottom of the tank.if it detieriorates or if a careless installer damaged it then you get cold water mixing at the top of tank and coming right out,therefore less than 1 showers vworth before temp drops..those "lime" deposits that are clogging your shower head might be pieces of deteriorated dip tube. dip tube can be replaced but old one cant be removed from tank if it has fallen out of position and into tank,,in that case,best just to replace tank,although thats unusual in a newer water heater.......also,gas tankless heaters are expensive and complex,also usually require a much larger gas line ran from meter to heater,they dont always tell you that..typical electric water heater tank is 50 gal,,40 or less is apatment size...........dan a 40 gallon water heater should supply about 30 gallons of hot water before a noticable drop in hot water temperature…you can test it by seeing how many 3 gallon buckets you can fill and dump in the tub before temp drops..if temp drops well before you have filled 3 gallon bucket 10 times,you probably have a bad dip tube..the dip btube is a plastic tube that carries the cold water to the bottom of the tank.if it detieriorates or if a careless installer damaged it then you get cold water mixing at the top of tank and coming right out,therefore less than 1 showers vworth before temp drops..those “lime” deposits that are clogging your shower head might be pieces of deteriorated dip tube. dip tube can be replaced but old one cant be removed from tank if it has fallen out of position and into tank,,in that case,best just to replace tank,although thats unusual in a newer water heater…….also,gas tankless heaters are expensive and complex,also usually require a much larger gas line ran from meter to heater,they dont always tell you that..typical electric water heater tank is 50 gal,,40 or less is apatment size………..dan

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