What did you pay for your controlled residential ventilation system?

This is a question like: "According to the list, my car costs €54,000, how much did yours cost?" Without exact details, this information is useless to you. The offer for our [Kontrollierte-Wohnraumlüftung] is €6,200 in pure material costs, a friend installs a [Kontrollierte-Wohnraumlüftung] himself for €2,500. What is better now?

It depends on the floor plan, the floor structure, where pipes can be laid, what special equipment is included, and so on and so forth. The amount at the bottom right really doesn't help you with the comparison because you don't know what's included. And before signing anything, you should know what is included.

I have clearly said that one should write what was included and what was not. So a Golf VII with 87 hp, automatic, automatic climate control, navigation, and the packages x, y, and z for 25,000 EUR or a Dacia Logan in the basic configuration for 7,600 EUR, etc.

I never wrote that it’s just about one number, period. With or without Sole-Earth heat exchanger, with or without silencer, how many? How many supply and exhaust air outlets? What living area? Floor? Ceiling? Preheating coil included? Moisture recovery included? Of course, only if all that is not a secret. Those who don’t want to can also choose not to write anything. An answer like "with us it costs 6,200 EUR PERIOD" really doesn’t help.

I never wrote that it’s just about a number and that’s it. With or without brine earth heat exchanger, with or without silencer, how many? How many supply and exhaust air outlets? What living area? Floor? Ceiling? Preheating coil included? Moisture recovery included? Of course only if all that is not a secret. Those who don’t want to don’t have to write anything either. An answer like “with us it costs 6,200 EUR PERIOD” indeed doesn’t help.

But how do you want to compare, for example, my offer with your two, when you only have one number? You don’t know which manufacturer, which line type, which special equipment, etc. If I were you, I would first make your two offers comparable, because you can’t commission another’s offer. If you then notice major discrepancies in this comparison, you can specifically ask about them here.

That is exactly the kind of question like: “How much did you have to spend extra during the sample phase for things that were not included in the standard?” Every builder (BU) has their own standard, some lower, some higher, but in the end, they usually come to a very similar amount for the same house. But that does not mean that from the statement: “We spent an extra €2,000 on the front door” one can conclude that you yourself have to plan an extra €2,000 surcharge with your builder (BU). Conclusion: You have to know the starting point.

Huh? Of course you can draw a lot from "we spent 2,500 EUR on a Topic Current B9 T1 with side part ST-B1. The standard included a white unfoiled plastic door."

Of course I can compare your offer if you specify it. Of course I can exclude the ventilation/plumbing/heating trade. Of course I can take another general contractor, nothing is signed yet.

By the way, we mostly agree with the current general contractor that we can include everything in the contract except for the final number of sockets, the exact bathroom fixtures, the interior doors, front doors, etc. – so we basically have a final price (except for possible additional foundation costs, which no one can know in advance).

What I need are just general roughly comparable facts. Roughly comparable because x-thousand euros for 7x supply air, 8x exhaust air, 2x telephony silencers, brine-earth heat exchanger, no moisture recovery, supply air routed in the floor and exhaust air in the concrete ceiling, and a system from manufacturer xy dimensioned for xxx m2 may be 100 percent comparable, but just "ROUGHLY."

So to the initial question: What did you pay and what was included? Emphasizing what was included and of course what was missing?

Huh? Of course you can conclude a lot from "we spent 2,500 EUR on a Topic Current B9 T1 with side panel ST-B1. The standard was a white unfoiled plastic door."

And what does that get you? Then you know that we spent 2,500€ more on the front door. And what do you do then? Either cry because yours is more expensive, or cheer because yours is cheaper. Or do you want to commission it, like "I want this door for 2,500€." That’s what I’ve been talking about the whole time. When I look at my acquaintance’s house and he tells me he spent 600,000€ on it, I also see the details, but what use is that to me? It doesn’t help me in my situation. It only helps if I have an offer with the complete scope of services and know what he commissioned and paid for it. But you’re not there yet, because you only have a sum, you don’t know the services. I don’t believe anyone here types out their complete parts list with quantities and individual prices, because that’s exactly what they would have to do. First get the service catalog, then you can post it here and have it evaluated whether it’s expensive or not. You very rarely get something presented on a silver platter in a forum…

We have a Helios controlled residential ventilation system with heat recovery, ceiling unit, with preheating coil, reheating, pollen filter, design outlets ground floor, grease filter kitchen, stainless steel floor outlets upper floor (except bathroom), (a total of 5 supply and 4 exhaust air), comfort control and web server, stainless steel exterior panel, FlexPipe piping, 2 silencers for approximately 9,000.00 € Edit: city villa with 130 m², 2 bathrooms, 3 bedrooms, 1 utility room/HAR