Better than Hybrid Hot waterr heater - adj mixing valve to output lower temp water

[davidmcbeth3]

I turned by sharkbite mixing value 1/4 turn to lower the temp of the water output of my tankless hot water heater.

kek

I'll continue to make 1/4 turns lowering temp output until someone complains in the house. kek

https://www.cashacme.com/sites/default/files/file ... trctns.pdf

The mixing valve apparently can go down to 85 F as lowest setting. I'll see if I can get it down that low. I take cold showers myself so I won't notice but others may.

Forget fancy hot water heaters ... just lower the amt of hot water produced. Cost: zero....mixing valve already installed.

[BigBarney]

I have my heat pump water heater down to 115° and the wife has yet to complain..

BigBarney

[davidmcbeth3]

I have my heat pump water heater down to 115° and the wife has yet to complain..

BigBarney

Take it down to 114 ... do it. Take the risk...

[Retro_Origin]

I have my heat pump water heater down to 115° and the wife has yet to complain..

BigBarney

Honestly if it weren't for washing dishes I think we could all get a way with much lower temps, but seriously, there is no alternative to turning it on hot and steam blasting those dirty pans!!

[CapeCoaler]

Honestly if it weren't for washing dishes I think we could all get a way with much lower temps, but seriously, there is no alternative to turning it on hot and steam blasting those dirty pans!!

That and legionella...
https://www.heatgeek.com/hot-water-temperature-sc ... egionella/

[davidmcbeth3]

Honestly if it weren't for washing dishes I think we could all get a way with much lower temps, but seriously, there is no alternative to turning it on hot and steam blasting those dirty pans!!

Don't you take tap water at its coolest and drink it ? Maybe with some ice cubes you made from your tap water ? We don't boil our water before using it. Unless you live in Flint, MI and Cleveland in which case you don't drink the water at all.

Kool-aid instructions:
Place 2 Tbsp. of your favorite flavor Kool-Aid sugar sweetened drink mix in large glass. Add 1 cup cold soda or seltzer. Stir until drink mix is dissolved.

https://www.kraftheinzcompany.com/brands.html The company is trying to kill that girl. Good, good.

[BigBarney]

I do take it up to 140° every 2 weeks to take care of Legionella...

BigBarney

[Retro_Origin]

Don't you take tap water at its coolest and drink it ?

We actually filter our city water before drinking it. Chlorine and the like taste so terrible I can't drink it straight from the tap. I don't really use ice cubes ever - although from what I've learned if you're going to be worried about chemicals and stuff getting into your system you (or in this case, I ) need to filter the water you bathe with too because that's entering into your body through all your pores

[davidmcbeth3]

I do take it up to 140° every 2 weeks to take care of Legionella...

BigBarney

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5515819/

That might not be effective ... FYI

[Rob R.]

I do take it up to 140° every 2 weeks to take care of Legionella...

BigBarney

A better setup is to install a mixing valve for sinks, showers, etc, and run untempered water to your dishwasher. This way you can set the tank at 140F and not be concerned about scalding.

[gaw]

We have well water, no bad tastes and purity is determined by lack of diarrhea.

[davidmcbeth3]

We have well water, no bad tastes and purity is determined by lack of diarrhea.

I too have well water. Several years back the town contemplated extending town water to my neighborhood (at request of a few neighbors). I conducted a water quality study and produced a report examining our neighborhood's well water quality and the towns.

A few neighbors had some iron content from their wells. The town system had 10x iron in theirs. So these folks wanting town water to solve their minor iron content in their well water would not have been happy with town water.

I issued out a report looking at water quality testing done over 40 years. Our wells always outperformed the town water. Zero lead from the taps in well water sourced homes, lead in town supplied water (which the state did a test that was 2x the amount that the town reported).

The cost to link up to the town water , just to hook up and not counting the water bills, was $25,000 and would result in a lien on the property so if you wanted to sell the house you would have to pony up $25K prior to sale.

After the neighborhood learned of the crappy town water quality and costs (and those who initially disagreed with my recommendation to to support hooking up who followed my advice to go to town hall and drink the water ended up being the most vocal about the crappy water that they almost signed on for lol) the project was canned.

Well water is best...if issues there are solutions with water treatment that you can do. I helped many in my neighborhood.

[davidmcbeth3]

Lowered mixing valve another 1/4 turn .. kek

Now have to turn faucets to max to get hot water ~ 100F

No one complaining...dare I go further ? I dare ! I dare !

[hotblast1357]

Question of the day,

Is it more energy efficient to turn down the temp at the source using less electricity to heat the water in the beginning, or heat the water to the same high temp, then pump some cold water in with that high heated hot water to bring it back down in temp?

A resistant hot water heater will never be half as efficient as a heat pump water heater, they have COPs of 3+.

I feed my electric water heater in the winter with boiler temp water, so I have a mixing valve because it can see temps in the 190s.

[Richard S.]

, then pump some cold water in with that high heated hot water to bring it back down in temp?

You'd only want to do that if you need a larger volume of hot water. e.g you have a bunch of teenagers in the house and someone is always taking a cold shower because all the hot water was used up.

That said, these newer water heaters are super insulated and it's not going to be huge savings keeping it low. I'd concentrate on insinuation for the pipes and valves including the pressure relief valve. Install in the heated living space if possible.

Something else to consider is simply an uninsulated storage tank before the water heater in the heated space or near a heat source like your coal stove. This is effectively a passive heat pump. It may only raise the temp of the water 10 or 15 degrees and it may take years to recover the investment but it will save money long run.