Vestaxx window heating - experiences?

  • Erstellt am 2021-11-13 20:56:37

Christian 65

2022-10-11 01:51:45
  • #1
What’s annoying is that you all think everyone else is an idiot who wouldn’t act the way you consider right. In complete ignorance of the actual reasons many homeowners build, do you ever skim through the forum? Go to the financing thread. It’s often about: Can I even afford a house? Like in real life. Why are so few electric cars sold? You definitely save consumption costs with them. Definitely. Because they are too expensive to buy. Yes, there are other reasons, but for most people the purchase price is too high. Period. Economic long-term considerations irrelevant. Payback consideration secondary. Someone posted a table earlier showing that a 12kwp system produces on average 700kwh in winter. It’s nothing for you. It’s actually a counter value of over €800 in those 4 months, but for you: It’s no use! Yield in summer? Irrelevant. No one ever denied that it’s best to act as you suggest: Heat pump, underfloor heating, and photovoltaic on the roof plus buffer battery. Ideal, great, I would do it that way too. Undisputed. Any deviation from this ideal configuration can only perform worse in terms of consumption. Right, yes right. Electric heating without photovoltaic? Pointless. Electric heating without sufficiently large photovoltaic? Pointless. Electric heating without a buffer? Actually also pointless. Roof area unfavorable. Pointless. Orientation unfavorable? Pointless. Powder sufficiently available? Pointless. Only a small niche remains where it actually makes sense. But there is one. And those are not necessarily idiots. I know the reality out there. You don’t. Infrared heater users, all idiots. Electric underfloor heating? Complete idiots. Window heaters anyway. No heat pump? Illegal. Wood chip heating? Probably just as crazy as gas with solar ten years ago. But these systems have been built thousands of times like that. You think they’re all nuts. That’s how you come across. And I stick to it: if I can have a large photovoltaic system installed for the same initial investment, then I would do that. Insulate the house well and then generate electricity in sufficient amounts. Even without a heat pump. But that’s what I would do. Who cares?!
 

Christian 65

2022-10-11 02:01:13
  • #2
When the feed-in tariff was still at 20 cents, someone plastered an electric underfloor heating for himself and put a 15 kWp system on the roof and garage for the rest. The whole thing didn’t cost more than 30k in total. The house was well insulated, of course. But he actually didn’t care how much electricity he consumed. After all, he didn’t have to buy any more. He was probably a nutcase too.
 

Christian 65

2022-10-11 02:15:50
  • #3
just read: feed-in tariff increases by 31% from 07/22. it's only 1.7ct/kwh, but still. if the ESPV continues to rise in the next few years and the batteries become cheaper, every current calculation will look outdated anyway.
 

Christian 65

2022-10-11 02:25:58
  • #4
3. Are there any other features to consider according to online tests for 24 kW instantaneous water heaters? The best 24 kW instantaneous water heaters also have a low power consumption. The annual electricity consumption is specified in kilowatt hours (kWh) and ranges between 465 and 479 kWh for the devices.

But it’s no longer worth it for a heat pump water heater. Not for long showers. But you can save money. Costs in Germany about 300 € Costs heat pump water heater: about 5k, also nonsense again, right?
 

RotorMotor

2022-10-11 08:30:15
  • #5

Dear Christian, what don’t you understand about the calculations?
Your entire listing also misses the reality of this thread by a wide margin.
We have always argued with numbers and calculations.
Not with feelings and also not with fundamental rejections of certain technology.
We also haven’t used any shell game tricks of shifting money from one pocket to another.

We have also never said that one is not allowed or able to deviate.
We only vehemently disagreed when it was claimed that a different approach would be fundamentally more sensible.


Of course, unfortunately I realize I spend way too much time here. ;)


But that’s exactly why a full cost accounting is so important.
Anyone who is already short on cash should all the more definitely not put the wrong technology in their house.
It’s simply, as already explained several times, not only about the investment costs as presented by V.
If I pay the bank more, but pay significantly more to the energy supplier, nobody is helped by that.
Neither the homeowner, nor the environment!
What matters is the total monthly burden!



There is a small misconception here.
A high feed-in tariff is rather disadvantageous for the economic consideration of inefficient heating systems.
Because that means I lose more money when using the electricity myself.
Here as well, the heat pump allows me to use less and thus feed more of the well-paid electricity back in.


You are welcome to open your own thread on this topic where we can discuss it.
 

Vestaxx GmbH

2022-10-11 09:18:16
  • #6


Okay—we are now at the accusation of insult and a factual discussion is no longer possible. I am now withdrawing from the dialogue with you. This will surely be interpreted differently by others, but I can live with that ;o).

I am now taking care of the customers who contact us, want a factual consultation, and later thank us for it.

Have fun with your heat pump!
 

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