http://tanklesswaterheatertoday.com/3-questions-about-a-tankless-water-heater-3/ everything you need to know about tankless water heaters Tue, 13 Dec 2011 11:13:23 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://tanklesswaterheatertoday.com/3-questions-about-a-tankless-water-heater-3/comment-page-1/#comment-970 ProfQuil Sat, 19 Dec 2009 11:46:59 +0000 http://tanklesswaterheatertoday.com/3-questions-about-a-tankless-water-heater-3/#comment-970 2. They are enormous instantaneous electricity hogs; just checking out one possible unit for my place, it used 3 separate circuits, each 240V 40 A, or if all 3 are on at once, 120 A, in this case 29 KW, around 100K Btu. You can go smaller, but it's all about how many simultaneous things you need to feed. Obviously that is either over or a big part of your standard panel capacity, if you have to factor in upgrading your electric service, there goes the cost. 2. They are enormous instantaneous electricity hogs; just checking out one possible unit for my place, it used 3 separate circuits, each 240V 40 A, or if all 3 are on at once, 120 A, in this case 29 KW, around 100K Btu.
You can go smaller, but it’s all about how many simultaneous things you need to feed.
Obviously that is either over or a big part of your standard panel capacity, if you have to factor in upgrading your electric service, there goes the cost.

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