ReplyJust out of curiosity, what are the energy savings between a tank heater and a tankless? And the price between the two.
Nice, clean install though.
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Tankless job my bro in law put in
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Just out of curiosity, what are the energy savings between a tank heater and a tankless? And the price between the two.
Nice, clean install though.
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Idk any actual numbers but the theory is your only heating the water when you need it. Instead of keeping say 40 gallons hot 24/7.Originally Posted by access_max
Comfort also comes into play. You really don't have to worry about running out of hot water.
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Very nice install btw
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They can get up to 98% so they can definitely save some money. I'm far from an expert on them I only work on a few a year. Initial cost can be quite a bit higher. One of the complaints I've heard about them is it takes longer to get hot water especially farther away from the unit because the pipes stay cold and you need to run that water out first.
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Thank you
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Isn't it the same issue with a tank water heater?
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But with a tankless you have to also wait for the burner prepurge and light off. A tank gives warm water right away. This also sometimes gives a "cold water sandwich"
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That's a pretty small gas line.. How long it that csst? Looks like 3/4".. Natural gas?
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Yeah 3/4 to a tee at the ceiling, around 6ft I think. From there it goes to hard black pipe. 3/4 is all those units require as long as you have 1 1/4 from the meter and its the 1st gas appliance. Oh and yes natural gas.
A couple guys from work went to a class and the newest ones coming out will run on 1/2". It doesn't matter if its before or after other appliances as long as it gets 3.5" inlet.
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They can save on gas but if you factor in first cost, maintenance and repairs you
don't have with a tank, is the net result savings? Not if you lose a $xxx board!
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That's not much different then high end hvac systems. 16 seer 2 stage, mod furnace, and a couple repairs and there go all your savings.
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Agreed, cheaper to repair a cheaper hot water tank, than spend more upfront on a nifty tankless loaded with features that will break at some point that costs $$$ to fix, and bam, all the savings you saved up, evaporate.
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Most tankless water heaters don't have a pre-purge. They have a post purge. I have a Rinnai in my house and it works great.
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I think it's unfortunate that they ended up having to market these heaters as energy savers - they really don't save that much energy, and in a lot of cases, end up using the same or more, AND using more water as well. The cold sandwich gets families to leave water running sometimes too long. Showers no longer have any real time limit. You get the idea.
That said, I installed a tankless about 4 year ago, and I love it - but for the RIGHT reasons. it's a lot smaller than my old tank, and it runs forever. I spend more on gas than I used to, because we just use the hot water a lot more. I actually would like to install a mini-tank heater and recirc line to get rid of the sandwich issue, and get instant hot water, which would pretty much eliminate all the negatives of the system.
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Recirc is totally worth it. Just do it. I find it annoying now waiting for hot water or getting too hot of water and having to mix it.
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Oh, I know it is worth it - I just spent my household upgrades budget on a softener though, so it'll have to wait a bit for the recirc upgrade.
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I hear you. I don't think i can get a new system for my downstairs until October.
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