Tankless water heaters

[iceman]

Heh, I started that thread over 9 years ago, holy crap!

ha, I didn't realize it was that old, I looked at the last post date and it was in 2014.

[kokomas]

x4 on Navien. Upstairs neighbor constantly has problems with his bosch

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[iceman]

I can't recall when you retired, but what about when you were part time at the house in Donner...? Wouldn't tankless be more economical in that situation since your not heating water when you're not there? Or still not worth it once you factor in cost of tankless system?

Well you have to factor in how much longer he's gonna be alive, too.

[VTeton]

I am doing a new build w Nat gas, I am think two 199k tankless for hot water. I could probably run heat off it to. Not sure I want to due to the legioners thing....

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[::: :::]

I am doing a new build w Nat gas, I am think two 199k tankless for hot water. I could probably run heat off it to. Not sure I want to due to the legioners thing....

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I have a Navien that does both
Two totally separate loops
No legionnaires, at least due to the heating loops

[old goat]

I can't recall when you retired, but what about when you were part time at the house in Donner...? Wouldn't tankless be more economical in that situation since your not heating water when you're not there? Or still not worth it once you factor in cost of tankless system?

We looked into tankless years ago to replace our 2 electeric water heaters that came with the house. At that time we were told Truckee water was too cold and a tankless wouldn't get it hot enough. At that time the fact that we were only in the house part time was a consideraton. However our LEED certified architect points out that in Sacramento if he is gone for a month his tank water heater gas bill is about 8 bucks, so at least economically it wouldn't make sense to go tankless--payback would be far longer than the life span of the heater. In Truckee for a second home the payback would be shorter than in Sacto but still longer than the life of the water heater.

Well you have to factor in how much longer he's gonna be alive, too.

TRIGGER WARNING!!!! VIRTUE SIGNALING AHEAD

No way will the tankless heater or the 96% efficient furnace we put in pay for themselves in our lifetimes. Lowering our carbon footprint a little bit is our gift to you young whippersnappers so that maybe it will still snow when you're our age.

[Tech Tonics]

Thanks for all the replies.

I was definitely planning on a gas heater, not electric.

Reading this thread has me thinking that, because it's really only in issue in the master-bath shower...maybe I should get a little (gas?) tankless heater only for that line.

The house was originally a 3/1, and the previous owners added on a master bath/bedroom but never updated the water heater.

So maybe I don't have to change the heater for the whole house, just something to keep the wife and I from having to take cold showers. We are fucking adults, for chrissakes.

[Harry]

From what I've heard, skip the electric ones. The natural gas ones however, can be awesome.

I heard the same. Although I think it was the same guy who told Austin who told me.

[MontuckyFried]

I heard the same. Although I think it was the same guy who told Austin who told me.

Ha. I think I know who you're talking about. If it's the same guy, he also said that in Big Sky you better have one badass heater with some serious BTUs (which defeats the efficiency standpoint) or just get a standard tank because the incoming water is so freaking cold compared to municipal water in warmer climates. That was the biggest thing that kept me from bothering when it came time to replace my tank. Before making the decision, I tested the cold water from my tap. It was coming in at like 36 degrees. Yeah, that's a bit much for an affordable tankless to deal with. When I move back down South though where the incoming water is like 70 degrees, even an inexpensive (NG) tankless should have no problem at all.

[hutash]

As I have posted in the other thread, I ask my plumber every few years abiut tankless and he still does not lime them. They are too costly to put in, run, maintain and repair. Replacing a 50 gallon tank heater every 10 years is far cheaper. And this is in southern California where gas is plentiful and cheap and the weather makes hearing and delivering hot water throughout the house easy and efficient.

[Harry]

^^^ definitely the same guy. I met him at that wild party you threw back when you owned that Firelight condo.

[dan_pdx]

As I have posted in the other thread, I ask my plumber every few years abiut tankless and he still does not lime them. They are too costly to put in, run, maintain and repair. Replacing a 50 gallon tank heater every 10 years is far cheaper. And this is in southern California where gas is plentiful and cheap and the weather makes hearing and delivering hot water throughout the house easy and efficient.

Ditto for Portland Oregon; my plumber (who would have done the work either way) said the payback period on a tankless would be about the lifetime of the unit, but the up front costs are a lot higher than just replacing a tank. That would have been a retrofit in an old house, maybe the math is different in new construction.

[MontuckyFried]

I thought this video summed it up pretty well:

[Evil E]

Love my natural gas rennai. Never ending hot water


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[Cruiser]

We've got 6 people trying to get ready in the morning and nobody ever has to endure a cold shower. Endless hot water is great. Like really great.

[Supermoon]

What are the approx installed costs for a decent one? I have a 3/2 that needs a new water heater in the next couple of years.

Obviously it will vary based on location, installer, etc. Just trying to get in the ballpark.