the best tankless water heater

[WarriorWithWood]

IYHO what is the best electric tankless water heater on the market?

[ChrWright]

I've heard a lot of plumbers talk highly of Rinnai.

I've installed 2 Bosch units. The first was the 250sx--total POS, finicky headache.

The second was the 2700ES, which was a great unit and has performed flawlessly. Both units were installed to serve only bathrooms, with large garden tubs. Both units required sealed stainless steel venting, which drove the overall cost way high.

There are power vented units now, that can be vented in PVC but I don't have any direct experience with them.

FWIW

[naptownCr]

The operative word here is ELECTRIC
There are not many that are good
Go with an energy star if available.
If there is nat gas or propane available switch to that fuel
Electric is going to require a huge amount of power if it is used for a whole house application.
As far as gas goes
I like the Navien as they are condensing up to 98% efficient and can be vented with PVC as opposed to the really expensive Rinnai tanks.

[WarriorWithWood]

Yeah, it's the electric that has me jumping through hoops. It's in a conditioned attic, there are 2 50a 240v circuits up there already.

Here's what I'm thinking.
http://www.titantanklessheater.com/store/1409019/product/N-210%20SCR4

[Silvertree]

http://www.navienamerica.com/

I know 2 guys that say they like these best.
Never used them myself

[naptownCr]

Yeah, it's the electric that has me jumping through hoops. It's in a conditioned attic, there are 2 50a 240v circuits up there already.

Here's what I'm thinking.
http://www.titantanklessheater.com/store/1409019/product/N-210%20SCR4

Is this for a single bathroom or entire house?

[neolitic]

I've only done point of use,
but JamesNLA and mdshunk have both
posted a lot of info.
I think those are JamesNLA's specialty.

[WarriorWithWood]

It's for a small house. It's a vacation home and they have no kids, so it's just the 2 of them. I'm looking for a 70 degree rise at 2.5 gpm (The winter water here in the north will get pretty cold.). There's no gas available (that would be too easy.).

[neolitic]

...... There's no gas available (that would be too easy.).

Not necessarily.
Every gas whole house I've looked at
got scotched because of the upsized
supply.

[Century Man]

I have a SETS unit in my house. They are no longer in business. My dislike is the amount of sediment caused by electrolysis.

[naptownCr]

A couple more questions
Well or municipal water
Well you can figure about 55 degrees in PA
Are there pressure balanced shower valves?
Most of these units will restrict flow to maintain outlet temp.
Looks like the 210 would be close but I don't know if it uses one or two circuits If tow it should work.

[WarriorWithWood]

A couple more questions
Well or municipal water
Well you can figure about 55 degrees in PA
Are there pressure balanced shower valves?
Most of these units will restrict flow to maintain outlet temp.
Looks like the 210 would be close but I don't know if it uses one or two circuits If tow it should work.

municipal water. You're close geographically, what's the coldest your water comes in at (my guess is 40 degrees).

No balanced valves, older home.

The 210 uses 2 breakers and raises the temp 55degrees @ 2.5 gpm. Looks like it may be the one.

[Century Man]

You can pre-heat the intake water with one of these.
http://www.renewability.com/power_pipe/index.html
or this one
http://www.gfxtechnology.com/

[naptownCr]

municipal water. You're close geographically, what's the coldest your water comes in at (my guess is 40 degrees).

No balanced valves, older home.

The 210 uses 2 breakers and raises the temp 55degrees @ 2.5 gpm. Looks like it may be the one.

The non pressure balanced valves could cause some excitement if someone else uses hot water at the same time as a shower.
I'm on a well so it is 56 or so all year round.

You can pre-heat the intake water with one of these.
http://www.renewability.com/power_pipe/index.html
or this one
http://www.gfxtechnology.com/

The above are good products and should become a code item in new construction. These things work remarkably well.

[Eieio]

Take a look at EEmax: http://www.eemaxinc.com/WhyTankless