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Converting from tank to tankless water heater
Posted on 3/20/17 at 12:14 pm
Posted on 3/20/17 at 12:14 pm
Old electric tank is on its last legs and I'm pretty sure I'd like to go tankless. I looked on Amazon just to get a cost idea and price differences are way wide. Saw stuff from $125 up to over $500 just on the first few pages.
Anyone throw out ideas of what I should expect to pay for parts and installation? Any additional information that I should provide? Pros/cons of tankless?
Anyone throw out ideas of what I should expect to pay for parts and installation? Any additional information that I should provide? Pros/cons of tankless?
11
Posted on 3/20/17 at 12:17 pm to High C
Your biggest potential headache is that the electrical requirements will likely force you to upgrade the gauge of wire from the heater to the breaker, and the main breaker/water heater circuit breaker.
shite pulls a LOT of amps
You typically can't just swap an electric with a whole house tankless.
shite pulls a LOT of amps
You typically can't just swap an electric with a whole house tankless.
This post was edited on 3/20/17 at 12:24 pm
Posted on 3/20/17 at 12:23 pm to High C
Do you have natural gas in the house as well? I'm assuming no bc the original heater is electric.
Posted on 3/20/17 at 12:25 pm to Volvagia
Yeah the big price tag in this will be the installation (electricity and plumbing both). Mine WH just went out and I discussed with my plumber switching to tankless. He said the installation will be very costly and in his opinion it wasn't worth it.
This post was edited on 3/20/17 at 12:26 pm
Posted on 3/20/17 at 12:27 pm to High C
Don't get a rheem unless you want to get reamed.
Posted on 3/20/17 at 12:29 pm to High C
Not worth it, do the comparison of new tank heater then compare to plumbing and electrical upgrade, the savings aren't there. Gas is even more costly and less of a savings.
Posted on 3/20/17 at 12:32 pm to High C
We went the opposite....had tankless, and now switched to conventional. Tankless needs to be cleaned every year or so at first, and then every 6 months as it ages. And the water DOES NOT get hot enough when it needs cleaning, and this is not a job most non-tool-types can handle easily. Conventional tanks have much hotter water, and even if they have to be replaced in 10 years, you will have less expense.
Posted on 3/20/17 at 12:37 pm to High C
I have heard that the electric ones are not worth a shite, I switched to a tank-less gas one from a traditional gas one last year, was pretty expensive to do the switch (~1K on the heater and about 5-600 on the install) so i will never "make money" with the efficiency, but the comfort of never running out of hot water is well worth it
Posted on 3/20/17 at 12:39 pm to mt1
quote:Explain please.
Don't get a rheem unless you want to get reamed.
Posted on 3/20/17 at 12:42 pm to The Mick
quote:
Don't get a rheem unless you want to get reamed.
interesting, I have heard that is one of the top brands, the best being Noritz
Posted on 3/20/17 at 12:43 pm to The Mick
Instead of starting a new thread, I'll use this one to ask...how much to swap out gas tank heater for gas tank heater if I were to get someone to do it?
Posted on 3/20/17 at 1:17 pm to High C
The conversion cost will depend on what you are looking at for your situation. How many fixtures it supplies hot water to, the utility upgrade for the heater, and the plumbing modification needed for condensing units. I have 2 Noritz heaters in my home-one that heats 12 gallons a min and one that heats 7 gallons a minute. They are both the condensing type, so I had to run a drain to plumbing vent and install a p trap for both of them. The 12 gallon a min heater pulls roughly 210k btus and the other pulls 180k btus. This means you will need a 3/4" gas line ran to one if you choose one of these sizes. I vented the units with a 3" pvc line out of the roof as well. Worth the cost in my opinion. As for cleaning it once a year- that depends on the hardness of your water. Anyone with a bucket and white vinegar can clean one.
Posted on 3/20/17 at 2:11 pm to Volvagia
This. You will need a 50amp service, most standard heaters are 30amp.
Posted on 3/20/17 at 2:14 pm to LSUsmartass
Install? Around $150-$200ish
The unit should be between $400-700 depending on brand.
Never let them charge extra to haul off, they get paid on that scrap.
Home depot usually has a scratch and dent for sale.
Most water heaters are somewhat hidden, so I would look into that first.
For as many brands they have that sell heaters, most are very similar.
The unit should be between $400-700 depending on brand.
Never let them charge extra to haul off, they get paid on that scrap.
Home depot usually has a scratch and dent for sale.
Most water heaters are somewhat hidden, so I would look into that first.
For as many brands they have that sell heaters, most are very similar.
Posted on 3/20/17 at 2:15 pm to High C
It will be a pain unless you already have gas in the house...(as mentioned earlier) the amps will probably require wiring upgrade from panel to unit.
Check out the hybrid/heat pump water heaters instead. It will be much more efficient than your old heater, and won't have the installation costs of a tankless conversion.
Check out the hybrid/heat pump water heaters instead. It will be much more efficient than your old heater, and won't have the installation costs of a tankless conversion.
Posted on 3/20/17 at 2:21 pm to Napoleon
Install around here is $250. Got quotes from a few plumbers and all were in that ballpark.
Posted on 3/20/17 at 2:28 pm to Napoleon
Assume I'm really ignorant when it comes to water heaters...how long should I be getting hot water until it starts to run cold? Assume I open up one of the bathtub faucets and just let it run. Also assume nobody has been home all day using any hot water. Did I say to assume I am ignorant?
Posted on 3/20/17 at 2:30 pm to High C
If electric, don't bother!
If gas, think about it!
Get a good quality tank regardless. Go with one rated a little higher than your expected usage and a good brand such as Rheem.
If gas, think about it!
Get a good quality tank regardless. Go with one rated a little higher than your expected usage and a good brand such as Rheem.
Posted on 3/20/17 at 2:33 pm to High C
quote:
Converting from tank to tankless water heater
quote:
Old electric tank is on its last legs
Unless you have gas you can run, I would not do it.
Posted on 3/20/17 at 2:41 pm to LSUsmartass
quote:
Assume I'm really ignorant when it comes to water heaters...how long should I be getting hot water until it starts to run cold? Assume I open up one of the bathtub faucets and just let it run. Also assume nobody has been home all day using any hot water. Did I say to assume I am ignorant?
depends on a lot of factors but the exact same scenario at my house and it took 7-8 minutes running the tub faucet wide open
aprox 7-8 minutes
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