Cleaning of ventilation ducts in ventilation systems

As mentioned, dust in the supply air and exhaust air ducts must be removed.

VDI 6022 recommends cleaning the pipes every 3 years. It is in one's own interest to clean both exhaust and supply air.

F7 filters in the supply air.

Mottenhausen is right. If the product is so great and new, the idea would rather be to sell the cleaning method and equipment to the relevant companies. Then your life would take place at trade fairs in the role of a salesperson and not in the service vehicle in the new development area. A completely different job that requires completely different skills.

Sounds like a crazy idea to me as well. You can already tell from the first posts that the aspiring company founder hasn't done his homework.

Hello Mottenhausen,

For controlled residential ventilation systems, that is exactly what we do, initially for NRW because for me it is purely a side job. Later it can be expanded. But it must also remain affordable for the customer.

Yes, for disinfection there are agents that smell natural; this odor lasts max. an hour. Then it dissipates; the customer can decide for themselves whether they want it. I have spoken with many companies that install controlled residential ventilation systems, and none have a solution for cleaning that is really good. In addition, the companies do not have time to offer this service.

I installed my system myself, for example, so I am not an isolated case.

From 2019 onwards, according to [eu Richtlinie], only passive houses must be built. So more and more controlled residential ventilation systems are being installed. So it is a constantly growing market.

Sounds like a harebrained idea to me as well. You can already tell from the first posts that the prospective company founder didn't do his homework.

Why a harebrained idea? Explain to me what is wrong with clean air?

What is in the pipes is not automatically in the air. That exhaust air and supply air are not mixed and thus the supply air is not "contaminated" contradicts your statements, but is subtly ignored. In the end, a problem is to be solved that is not one or only very small.

What is in the pipes is not automatically in the air.
That exhaust air and supply air are not mixed and thus the supply air is not "contaminated" contradicts your statements, but is quietly ignored.
In the end, a problem is supposed to be solved that doesn’t exist or is only very small.

So a cross-flow heat exchanger extracts energy, namely heat, from the exhaust air. Practically, it does this by pulling the exhaust air through itself.

The recovered heat is added to the fresh air. From my point of view, fine dust particles also get into the fresh air this way. Or how else can one explain the dust in the fresh air duct, which of course is very thin, the film. I would say that the fresh air is indeed contaminated.

Just take a look at the exhaust air filter when changing it; at least mine is full, so it has to be replaced after 6 months.

The filter is supposed to prevent the dusty exhaust air from getting into the cross-flow heat exchanger.