VZug has been the leader in using heat pumps in appliances other than refrigeration and dryers.
They first launched their DW with an heat pump after cooperating with an university program on designing it and not much later introduced their washer with a heatpump.
Owning a heat pump equipped washer from them, I can say that system does indeed save significant amounts of energy - though never enought to justify the cost with it being a VZug.
But - besides their machines being in the most TOL category and thus pricey - their heat pump systems are quite "complicated".
They use something they call a "latent heat storage" system, which is basically a water tank filled with tap cold water.
The heat pump pulls the heat from there, dropping its temp to almost freezing. Because freezing water takes a lot more energy than just cooling it, that allows them to raise wash temps without causing much condensation or taking much heat from the room.
All of that made them rather expensive.
And - I was thinking, but never checked - they had a patent on that.
Further their HP equipped DW is somewhat of a weird thing. It's even taller than their tall tub DWs - but has a regular height interior.
So, with IFA coming up, I was looking around at some stuff, and rather by accident stumbled onto something.
"Otto" is a german online retailer. And they usually make their product photographs.
And I was highly confused by one little detail:
Any heatpum device, that has a coolant charge of a flammabel gas like R600a or R290a has to have a sticker that displays a "Caution Flammable" sticker and the charge amount.
And this DW had such a sticker on the kick-plate:
https://www.otto.de/p/grundig-volli...ssgedecke-C1362545192/#variationId=1719195891
The parts website I usually use does only list an inverter for a specific compressor - a TEE VNTZ 165 M.
An incredibly small compressor, varaible speed.
Not the compressor itself.
If you scroll through the pictures on the website, at the back bottom middle, you see a heatexchanger outlet.
The manual also states a few things about heat pump operations.
But the only cycle more efficent is the Eco cycle - it reaches an A.
They don't even make a huge hype about it - though from what I see they are the only company using heat pumps in DWs besides VZug.
Miele and BSH just use special insulations and specific programming plus their TOL drying systems respectivley and reach A-class efficencys.
So Arcelik just did that - and said nothing.
Even the sizing appears to be the exact same - inside and out.
So weird that they do not make any comment about that.
They first launched their DW with an heat pump after cooperating with an university program on designing it and not much later introduced their washer with a heatpump.
Owning a heat pump equipped washer from them, I can say that system does indeed save significant amounts of energy - though never enought to justify the cost with it being a VZug.
But - besides their machines being in the most TOL category and thus pricey - their heat pump systems are quite "complicated".
They use something they call a "latent heat storage" system, which is basically a water tank filled with tap cold water.
The heat pump pulls the heat from there, dropping its temp to almost freezing. Because freezing water takes a lot more energy than just cooling it, that allows them to raise wash temps without causing much condensation or taking much heat from the room.
All of that made them rather expensive.
And - I was thinking, but never checked - they had a patent on that.
Further their HP equipped DW is somewhat of a weird thing. It's even taller than their tall tub DWs - but has a regular height interior.
So, with IFA coming up, I was looking around at some stuff, and rather by accident stumbled onto something.
"Otto" is a german online retailer. And they usually make their product photographs.
And I was highly confused by one little detail:
Any heatpum device, that has a coolant charge of a flammabel gas like R600a or R290a has to have a sticker that displays a "Caution Flammable" sticker and the charge amount.
And this DW had such a sticker on the kick-plate:
https://www.otto.de/p/grundig-volli...ssgedecke-C1362545192/#variationId=1719195891
The parts website I usually use does only list an inverter for a specific compressor - a TEE VNTZ 165 M.
An incredibly small compressor, varaible speed.
Not the compressor itself.
If you scroll through the pictures on the website, at the back bottom middle, you see a heatexchanger outlet.
The manual also states a few things about heat pump operations.
But the only cycle more efficent is the Eco cycle - it reaches an A.
They don't even make a huge hype about it - though from what I see they are the only company using heat pumps in DWs besides VZug.
Miele and BSH just use special insulations and specific programming plus their TOL drying systems respectivley and reach A-class efficencys.
So Arcelik just did that - and said nothing.
Even the sizing appears to be the exact same - inside and out.
So weird that they do not make any comment about that.