Faucet without mixer? Only hot/cold?

Why bother when you can set the temperature directly at the heat generator? Then you don't need an extra thermostat, that would be redundant. Apart from the fact that you would then need a mixing valve again, where it doesn't make sense. Put differently: I would have to have the water always prepared at 60°, which would be insanely expensive, just to mix it down to 40° at the tap, only because I want 60° hot water twice a week...
If my husband showered at 3 a.m. with 42.5° and I find that too hot, then I just quickly lower it to 40°. The controller is next to the shower, and so is the digital display, meaning I can see at a glance how the water is currently set. No reason for a divorce

Hello Elina, we handle it exactly the same way as you... our hot water is heated to dishwashing temperature (about 45 degrees). Storing hot water to then mix it down was never an option for us either. It was only a problem with the bathtub, we couldn’t fill the tub. But we are not bathtub people anyway. The new house won’t get a tub at all. However, I would never have thought to look for a special (probably expensive) faucet for that. A single-lever mixer is perfect for that... even if it’s called a mixer.. you don’t have to mix. One max. swing and the max./min. temperature is immediately there. Your wish sounds complicated and expensive to buy... Best regards, Steffi.

Hello,

(where the 60° are then immediately there

Okay, that explains it. Then mixing might not be that essential after all. But what I don't understand: how fast is "immediately" and with which technology is that achieved? Or how do I find the post where it is explained? Are we talking about a type of instantaneous water heater? I just can't imagine it with storage tanks. Because that's what I thought of first.

Question for you, since you come from the field: How do you assess the risk of legionella? Or is it enough to occasionally raise the temperature to 60 degrees? (Although the answer to my question depends on your technology)


Kermit

With the instantaneous water heater, the risk of Legionella is practically zero, as it is constantly flushed through...

from on the go

Yes, it is a tankless water heater. We have 2 of them, one will soon be converted to a hot water heat pump, and there you can also set the temperature directly on the device, which is why I generally referred to the "heat generator." If I set the tankless water heater to 60°, I get it immediately; with the storage tank, it would take a while. I don't see any risk of legionella there, not with the tankless water heater anyway, and not with the storage tank in our case, since it only holds 80L and the flow rate is simply too high. 80L of hot water is gone after 2 days. However, you can also activate a legionella protection switch on this storage tank, which then heats it to the maximum temperature. Actually, I thought this could save energy again, but after 4 years in our own house with a tankless water heater, I am slowly beginning to doubt that. Our electricity consumption is 3600 kWh per year, and that already includes the hot water; before, in the rental apartment, we also had around 3000 kWh (hot water via central heating), so hot water preparation doesn't really make that much difference. I am actually quite impressed with tankless water heaters by now. Maybe we will skip the hot water heat pump altogether.

Hello Elina, we have exactly the same thoughts about hot water preparation. There are two of us and we don’t use much hot water (only showering and washing dishes, no baths). We also think, actually a tankless water heater should be much more economical than constantly keeping 100 liters or more warm in the tank... higher purchase costs and large space requirements also come into play. But everyone we ask "thinks we’re crazy" and says we would be paying through the nose... I would really be interested in a calculation example, from when it would really be cheaper to produce hot water via the gas boiler (with tank) instead of briefly with a tankless water heater. Best regards Steffi.