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Started By
Message
re: Tankless hot water heater advice needed
Posted on 1/31/17 at 10:44 am to mach316
Posted on 1/31/17 at 10:44 am to mach316
I wouldn't buy an electric one. I have built two homes and have had tankless water heaters for both and I wouldn't have anything else. I currently cook with gas and have it for my tankless heaters. If I were you, I would sink a propane tank and build your home with gas for cooking and heating your water with a tankless heater.
I have the Rinnai brand and haven't had any problems with them.
I have the Rinnai brand and haven't had any problems with them.
This post was edited on 1/31/17 at 10:45 am
0
Posted on 1/31/17 at 10:46 am to lsuhunt555
We have a propane tankless heater at the barn and it is great.
Posted on 1/31/17 at 11:46 am to Aspercel
Going electric will require 3 x 60 amp breakers. Electric tankless is not a good idea.
Posted on 1/31/17 at 12:11 pm to mach316
I have one that runs on gas and I like it.
Posted on 1/31/17 at 12:16 pm to mach316
So you have hot water and want a heater to heat it?
Posted on 1/31/17 at 12:20 pm to OweO
I have a 50 gallon gas and have never ran out of hot water. My gas bill is in the mid $20s when the heater isn't running. Would tankless save me that much more?
This post was edited on 1/31/17 at 12:21 pm
Posted on 1/31/17 at 12:22 pm to mach316
You need to think about demand. If there are showers going in 2 baths and then someone runs the washer or dishwasher they can't keep up with the demand.
Posted on 1/31/17 at 12:22 pm to OweO
Electric tankless water heater that support a whole house are just not worth it. The current draw they need and still the GPM drop is terrible.
The small ones used for say one sink, those are fine.
As far as the whole house if gas isn't an option go with a standard tank electric water heater.
The small ones used for say one sink, those are fine.
As far as the whole house if gas isn't an option go with a standard tank electric water heater.
Posted on 1/31/17 at 12:23 pm to mach316
Don't do it. If you had gas then maybe but certainly not electric. I know a few plumbers that won't put them in.
Posted on 1/31/17 at 12:23 pm to CelticDog
quote:
Get battery (tesla).
they don't make batteries
Posted on 1/31/17 at 12:29 pm to mach316
Gonna eat up a lot of amps.
Posted on 1/31/17 at 12:40 pm to mach316
they are not anymore efficient. Only reason is of space limitations and if you need constant hot water. I don't so I didn't get one.
Posted on 1/31/17 at 1:13 pm to mach316
The gas ones are better than electric ones IMO
Posted on 1/31/17 at 1:18 pm to Tiger Prawn
quote:
Only downside is that it takes 30-40 seconds for the hot water to start flowing out. I'll take that trade off any day
That sounds very comparable to a tanked system. You have to flush any cooled water in the pipes first.
Posted on 1/31/17 at 1:33 pm to mach316
There are many things to watch out for. Tankless is not some magic perfect solution. You won't save as much energy as they claim.
Do some google searching. Being all electric helps the tankless out a bit but watch out for cold sandwiching complaints and GPM ratings. What shower heads you like WILL make a big difference in what you need.
Do some google searching. Being all electric helps the tankless out a bit but watch out for cold sandwiching complaints and GPM ratings. What shower heads you like WILL make a big difference in what you need.
Posted on 1/31/17 at 1:34 pm to mach316
How much is a wet water dryer?
Posted on 1/31/17 at 1:36 pm to Tiger Prawn
quote:
Only downside is that it takes 30-40 seconds for the hot water to start flowing out
That's because the water in the lines between the faucet and the heater is cold. Doesn't have anything to do with it being tankless. It would be the same on a traditional.
Posted on 1/31/17 at 1:40 pm to Tiger Prawn
Three things govern the time it takes you to note the availability of "hot water" from the faucet.
1) The distance from the water heater (no matter the type) from the faucet measured in the length of pie run.
2) The size of the pipe. A 3/4" pipe will take longer to draw down than a 1/2" pipe. Do the math.
3) The amount of flow coming out of the faucet. The low flow faucets touted as water savers actually cost you time and might not be saving you money if the goal is to get hot water.
1) The distance from the water heater (no matter the type) from the faucet measured in the length of pie run.
2) The size of the pipe. A 3/4" pipe will take longer to draw down than a 1/2" pipe. Do the math.
3) The amount of flow coming out of the faucet. The low flow faucets touted as water savers actually cost you time and might not be saving you money if the goal is to get hot water.
Posted on 1/31/17 at 1:45 pm to TrebleHook
quote:
Would tankless save me that much more?
No. The amount of energy saved in tank vs tankless is greatly exaggerated. Water heater tanks are very insulated and efficient.
Tankless are currently very popular but unless you are frequently running out of water with a 50gal, there is no need to spend $$$ upgrade.
Posted on 1/31/17 at 1:46 pm to mach316
Had one for 10 years...then it crapped out. Was constantly in need of having the filter cleaned, which means a plumber, every time. I wasn't impressed...so we threw the thing out and went back to a tank. Yes, there is the notion of unlimited hot water, but every time it clogs and needs cleaning, the water pressure goes down drastically. Also, I found that we can get hotter water from a tank. So, we may not have endless hot water now, but that baby will boil you in the shower. Less expensive maintenance ta boot.
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