Comments on: Endless Hot Water: Takagi Heaters http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html?utm_source=rss&utm_medium=rss&utm_campaign=endless-hot-water-takagi-heaters The Guide To Highly Efficient Things Fri, 20 Nov 2009 00:48:28 -0800 http://wordpress.org/?v=abc hourly 1 By: Chris http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-89087 Chris Wed, 11 Nov 2009 15:20:17 +0000 http://s31669.gridserver.com/?p=564#comment-89087 I have owned a Takagi TK-3 Model Tankless hot water heater for almost two and a half years. It is the worst thing I had installed in my house because it has already started leaking. Takagi claims they have a five year warranty, but they want me to purchase a new water heater and send them the old one to determine if the defect is under warranty. Now that is NOT Great Customer Service, so I would definitely purchase a different brand or stick with a tank model. I have owned a Takagi TK-3 Model Tankless hot water heater for almost two and a half years. It is the worst thing I had installed in my house because it has already started leaking. Takagi claims they have a five year warranty, but they want me to purchase a new water heater and send them the old one to determine if the defect is under warranty. Now that is NOT Great Customer Service, so I would definitely purchase a different brand or stick with a tank model.

]]> By: Tankless Water Heaters: A 2009 Review | Eco Friendly Mag http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-32508 Tankless Water Heaters: A 2009 Review | Eco Friendly Mag Mon, 12 Jan 2009 22:20:34 +0000 http://s31669.gridserver.com/?p=564#comment-32508 [...] Endless Hot Water: Takagi Heaters [...] [...] Endless Hot Water: Takagi Heaters [...]

]]> By: Tankless Water Heaters: A 2009 Review http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-32196 Tankless Water Heaters: A 2009 Review Mon, 12 Jan 2009 00:05:15 +0000 http://s31669.gridserver.com/?p=564#comment-32196 [...] Endless Hot Water: Takagi Heaters [...] [...] Endless Hot Water: Takagi Heaters [...]

]]> By: Charlie http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-21708 Charlie Tue, 11 Nov 2008 17:23:59 +0000 http://s31669.gridserver.com/?p=564#comment-21708 Heath, wonder if you can comment further on Rinnai. I just got off the phone with the Rinnai tech rep and he said the units modulate on in and out temperature and should work as well as any tankless units. They could have some issues if incoming water is within about 15 degrees of set point but that should not be unique to Rinnai. I would think the Rinnai units, which modulate all the way down to 15K BTU, should be better than many others, though the Takagi T-K3 does go down to 11K. On the other hand, one installer I asked said the factory rep told them the Rinnai units would not work with solar preheated water. In the literature I've found, the only manufacturer that I've seen explicitly assert solar compatability have been a few of the Bosch units. I've got a low pressure well, which is another concern. Bosch recommends 40 lbs minimum for a well. I see various comments about other units getting "squirrely" which I can't imagine is a good thing. Would sure be nice to see a definitive review of tankless units installed on well pumps with solar. Heath, wonder if you can comment further on Rinnai.

I just got off the phone with the Rinnai tech rep and he said the units modulate on in and out temperature and should work as well as any tankless units. They could have some issues if incoming water is within about 15 degrees of set point but that should not be unique to Rinnai. I would think the Rinnai units, which modulate all the way down to 15K BTU, should be better than many others, though the Takagi T-K3 does go down to 11K.

On the other hand, one installer I asked said the factory rep told them the Rinnai units would not work with solar preheated water.

In the literature I’ve found, the only manufacturer that I’ve seen explicitly assert solar compatability have been a few of the Bosch units.

I’ve got a low pressure well, which is another concern. Bosch recommends 40 lbs minimum for a well. I see various comments about other units getting “squirrely” which I can’t imagine is a good thing. Would sure be nice to see a definitive review of tankless units installed on well pumps with solar.

]]> By: Heath http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-18270 Heath Tue, 14 Oct 2008 19:31:51 +0000 http://s31669.gridserver.com/?p=564#comment-18270 Karl is incorrect. I sell solar water heating systems everyday and constantly address the tankless issue. Rinnai heaters really don't work that well with solar. Takagi and Noritz are the way to go. Karl is incorrect. I sell solar water heating systems everyday and constantly address the tankless issue. Rinnai heaters really don’t work that well with solar. Takagi and Noritz are the way to go.

]]> By: curt http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-9425 curt Tue, 13 May 2008 23:17:25 +0000 http://s31669.gridserver.com/?p=564#comment-9425 Efficiency factor of this Japanese device is truly fantastic. Efficiency factor of this Japanese device is truly fantastic.

]]> By: Barry http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-1063 Barry Wed, 25 Jan 2006 13:25:34 +0000 http://s31669.gridserver.com/?p=564#comment-1063 Takagi and Rinnai manuals both say that it takes 4-6 seconds from the time the flow sensor (water tap turned on) detects flow to full up firing of the unit with output at the set temperature. This 6 seconds of water flow will be cold even if there's warm water in the pipes. That's the sandwich. Only a small holding tank would prevent it (as suggested in the Rinnai Manual). Takagi and Rinnai manuals both say that it takes 4-6 seconds from the time the flow sensor (water tap turned on) detects flow to full up firing of the unit with output at the set temperature. This 6 seconds of water flow will be cold even if there’s warm water in the pipes. That’s the sandwich. Only a small holding tank would prevent it (as suggested in the Rinnai Manual).

]]> By: Norman http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-1062 Norman Sat, 07 Jan 2006 13:16:20 +0000 http://s31669.gridserver.com/?p=564#comment-1062 Karl: Why would one manuf. have a much greater problem with water sandwich than another? I talked to 3 manuf's concerning water sandwich and got 3 different answers. Depending on the stats of my house and distance the sandwich period could be from 3 seconds to over 45 seconds. Is the water from the sandwich warm or on the cold side depending on the length of time you had the shower off while soaping up or whatever? One person in the engineering dept. said that the water in the line would probably not get cold for at least 10 minutes, maybe more. A plumber told me that the water sandwich water would be cold. Which is it? Wehn you turn on the water in the shower for the second time, having waited 10 minutes say, what temp. water will I get? I live in CA and the pipes go under the house. Norman Karl:

Why would one manuf. have a much greater problem with water sandwich than another?
I talked to 3 manuf’s concerning water sandwich and got 3 different answers. Depending on the stats of my house and distance the sandwich period could be from 3 seconds to over 45 seconds. Is the water from the sandwich warm or on the cold side
depending on the length of time you had the shower off while soaping up or whatever?
One person in the engineering dept. said that the water in the line would probably not get cold for at least 10 minutes, maybe more. A plumber told me that the water sandwich water would be cold. Which is it?
Wehn you turn on the water in the shower for the second time, having waited 10 minutes say, what temp. water will I get? I live in CA and the pipes go under the house.

Norman

]]> By: Goto Reviews http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-1064 Goto Reviews Fri, 30 Dec 2005 23:17:12 +0000 http://s31669.gridserver.com/?p=564#comment-1064 <strong>Solar Evacuated Tubes: Free Hot Water</strong> For solar water heating in your home, there are basically two types of solar collectors: conventional flat-plate collectors and evacuated tube collectors. Evacuated tubes have a number of advantages: the work on overcast days, in colder weather, and th... Solar Evacuated Tubes: Free Hot Water

For solar water heating in your home, there are basically two types of solar collectors: conventional flat-plate collectors and evacuated tube collectors. Evacuated tubes have a number of advantages: the work on overcast days, in colder weather, and th…

]]> By: chris http://www.metaefficient.com/hot-water-systems/endless-hot-water-takagi-heaters.html/comment-page-1#comment-1061 chris Tue, 22 Nov 2005 20:29:58 +0000 http://s31669.gridserver.com/?p=564#comment-1061 Can anyone comment on how the Paloma brand of tankless heaters compares to these (Takagi, Rinnai, Bosch)? Pricewise, they all seem to be about the same but, we were wondering which ones have a reputation for the highest quality and dependability. Thanks, Chris Can anyone comment on how the Paloma brand of tankless heaters compares to these (Takagi, Rinnai, Bosch)? Pricewise, they all seem to be about the same but, we were wondering which ones have a reputation for the highest quality and dependability.
Thanks,
Chris

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