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Tankless Water Heater

Tankless Water Heater

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by: radiogirl30 Active Indicator LED Icon 3 OP 
~ 7 years ago   May 11, '16 11:12am  
Does anyone have a tankless water heater?  Would you recommend it?  Pros and cons? 4951
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beastmode Active Indicator LED Icon 12
~ 7 years ago   May 11, '16 11:37am  
Works great for smaller homes. Not for larger ones from my understanding. I researched it last year. 4951
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shodan66 Active Indicator LED Icon 15
~ 7 years ago   May 11, '16 11:44am  
We have one under our kitchen sink because the water heater is on the opposite end of the house.  I like having instant near-boiling water without having to run the faucet for a few minutes.I agree with @beastmode that when I read up on them a few years back they were only good for short engagements.  As does everything else, they may have progressed beyond that by now or your needs could be small.Pro - hot water right nowCon - mine can't keep up for more than a gallon or so at a time  4951
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Chrisinkingwood Active Indicator LED Icon 8
~ 7 years ago   May 11, '16 11:59am  
It depends on the type and size you want to get. Are you doing what @shodan66 did and just want faster hot water at the far end of your home? Or are you thinking of replacing your existing water heater with a tankless. Fine Homebuilding Magazine had a good article on this 2 years ago. The general consensus they can be costly for remodels compared to new construction. Something about the gas needed to fire them up fast.  4951
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FoFa Active Indicator LED Icon 17
~ 7 years ago   May 11, '16 12:16pm  
When we looked at it, we had to have new gas lines run because our 3/4 inch gas line was too small to support the load (the water heater and everything else gas, like furnace). cost became very prohibitive when you figured that into it as well as the extra cost of the tankless heater.A better bet for most homes is POS (point of service) electric models, but then you have to have wiring and circuit breakers run to handle that load as well. 4951
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rugburn Active Indicator LED Icon 1
~ 7 years ago   May 11, '16 12:51pm  
Agreed, just could never economically justify the upfront cost of rewiring, new gaslines, and the tank itself. On a new build - maybe. Overall pros do not outweigh the cons. 4951
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buffaloglenn Active Indicator LED Icon 11
~ 7 years ago   May 11, '16 1:27pm  
A better bet for most homes is POS (point of service) electric models, but then you have to have wiring and circuit breakers run to handle that load as well.
 
@FoFa: Thanks for clarifying what you meant by POS, because, as I was reading it, I had something else in mind contemplating an electric water heater.  Good old gas tank water heaters are cheap and generally last a long time.  We are lucky in that we have two upstairs; one sources the utility room, kitchen, and one upstairs bath while the other sources the master bath and other upstairs bath.  We always have hot water quickly and plenty of it.My BIL replaced his with a tankless for the whole house, but it cost so much I don't see why anyone would do it.
4951
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beastmode Active Indicator LED Icon 12
~ 7 years ago   May 11, '16 1:58pm  
One thing I do remember researching was the install which is complicated....right gas lines, electrical. Hard to find someone who is a real professional in all those areas. A lot of fails from boards I researched. 4951
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lonestarcj7 Active Indicator LED Icon  New Member
~ 7 years ago   May 11, '16 2:00pm  
I had two hot water heaters that were both aging.  They were with in 6 ft of each other so I opted to size the appropriate Rinnai takeless for the number of fixtures in our house.  I combined the 2 hot water heaters into one tankless.My plumber quoted me $1200.00 for the install which I thought was high.  I ended up doing it myself.The gas issue - For a plumber to come into your house and perform the work they must design the system to accommodate max gas load on all appliances as if they are all on at the same time.  I did the math and I was very close to being with in spec so I installed the system.  We have had it for 3 years with no issues, even during the winter when we run the gas heat and fire place.All in all I am super happy with the tankless.  My kids are to the age where they take long showers.  No more cold showers for me!  One of the best investments I have made at the house.   Rinnai runs rebates at times and also check with Uncle Sam to see if there are tax credits available. 4951
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radiogirl30 Active Indicator LED Icon 3 OP 
~ 7 years ago   May 11, '16 2:00pm  
Are you doing what @shodan66 did and just want faster hot water at the far end of your home? Or are you thinking of replacing your existing water heater with a tankless. 
 
@Chrisinkingwood: 
I am replacing my existing water heater.  From what I'm reading online, it looks like it may not be worth the extra $$ 4951
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Fallon Active Indicator LED Icon 18
~ 7 years ago   May 11, '16 2:15pm  
Removed By Request 4951
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radiogirl30 Active Indicator LED Icon 3 OP 
~ 7 years ago   May 11, '16 2:16pm  
I'm really thinking that it's going to be a standard water heater......this sounds VERY expensive! 4951
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princecharming Active Indicator LED Icon 5
~ 7 years ago   May 11, '16 2:53pm  
tankless water heater's are good especially for you people who have water heaters in the attic. I just repaired a friend of mine's sheet rock in his upstairs bedrooms because of a water heater hose leak buy a cheap five dollar and see what happens just saying 4951
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DanStanton Active Indicator LED Icon 3
~ 7 years ago   May 11, '16 8:46pm  
When we looked at it, we had to have new gas lines run because our 3/4 inch gas line was too small to support the load (the water heater and everything else gas, like furnace). cost became very prohibitive when you figured that into it as well as the extra cost of the tankless heater.A better bet for most homes is POS (point of service) electric models, but then you have to have wiring and circuit breakers run to handle that load as well.
 
@FoFa:  3/4" gas line is more than adequate for a tankless water heater. Most Rinnais run on 1/2" even up north. You been had. Sorry. Electric models suck up a lot of juice.
4951
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DanStanton Active Indicator LED Icon 3
~ 7 years ago   May 11, '16 9:00pm  
Most problematic for tankless water heaters is water pressure. As most models are self-contained, there shouldn't be much difference between installation costs between tanked and no tank. The tankless will need an AC outlet,  but not an entirely new circuit. If you want all the doo-dads added on, that'll cost you. Just like anything else. And there is no need for changing any of the hard plumbing, unless you move it away from the existing hot water heater. 4951
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FoFa Active Indicator LED Icon 17
~ 7 years ago   May 12, '16 7:18am  
3/4" gas line is more than adequate for a tankless water heater. Most Rinnais run on 1/2" even up north.
 You been had. Sorry.
 
@DanStanton: Well they said with the water heater, furnace, dryer and stove, it wasn't enough, so we just stuck to the regular water heater.
4951
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