Hello
I have a newly built, 5-year-old passive house equipped with a ventilation system.
Lately, I have been thinking a lot about cleaning the ducts installed inside the building structure, since these are not accessible for removing construction dust and accumulated dirt.
I have now taken some photos with an inspection camera, showing about a 1 cm (0.4 inch) layer of dust inside the exhaust duct, which is not ideal.
After much consideration, I have found a partner with whom I have solved this problem.
We offer efficient cleaning using a cleaning pig. However, before we enter the market (planned for 1.1.2019), I wanted to hear some feedback regarding new buildings with ventilation systems.
This concerns systems installed with distributors and plastic ducts.
We would like to limit our service initially to the NRW area, but here I am interested in a realistic assessment from owners of such systems.
I have one myself and want to continue breathing clean air, not dirty, dusty air...
The method we offer is truly effective and efficient.
So, let’s hear your thoughts.
I have a newly built, 5-year-old passive house equipped with a ventilation system.
Lately, I have been thinking a lot about cleaning the ducts installed inside the building structure, since these are not accessible for removing construction dust and accumulated dirt.
I have now taken some photos with an inspection camera, showing about a 1 cm (0.4 inch) layer of dust inside the exhaust duct, which is not ideal.
After much consideration, I have found a partner with whom I have solved this problem.
We offer efficient cleaning using a cleaning pig. However, before we enter the market (planned for 1.1.2019), I wanted to hear some feedback regarding new buildings with ventilation systems.
This concerns systems installed with distributors and plastic ducts.
We would like to limit our service initially to the NRW area, but here I am interested in a realistic assessment from owners of such systems.
I have one myself and want to continue breathing clean air, not dirty, dusty air...
The method we offer is truly effective and efficient.
So, let’s hear your thoughts.
R
readytorumble22 Oct 2018 08:40Luftikuss schrieb:
Why is it a bad idea? Explain to me what is wrong with clean air?Sorry, but you have no technical expertise and contradict yourself.
Also, the claim that from 2019 onwards, only passive houses must be built according to the EU directive is complete nonsense.
I'm out of here.
Sorry, but I wouldn’t trust you with my system if you can’t even correctly explain the basics of a ventilation system...
A cross-flow heat exchanger definitely does not mix exhaust air with supply air. The heat and moisture transfer in an enthalpy exchanger occurs through a surface or membrane, which does not allow air to pass through. Otherwise, the entire purpose of such a system would be defeated.
The minimal dust in the supply air ducts does not come from mixed exhaust air but because even the best standard filters used in ventilation units allow a small amount of particles to pass through. We are not dealing with a cleanroom facility to industrial standards here.
A cross-flow heat exchanger definitely does not mix exhaust air with supply air. The heat and moisture transfer in an enthalpy exchanger occurs through a surface or membrane, which does not allow air to pass through. Otherwise, the entire purpose of such a system would be defeated.
The minimal dust in the supply air ducts does not come from mixed exhaust air but because even the best standard filters used in ventilation units allow a small amount of particles to pass through. We are not dealing with a cleanroom facility to industrial standards here.
L
Luftikuss22 Oct 2018 08:48readytorumble schrieb:
Sorry, but you have no expertise and are contradicting yourself.
Also, the claim that since 2019 only passive houses have to be built according to an EU directive is complete nonsense.
I’m out of here.I have to remove “must” because that is incorrect; “should” is the right term. You can verify that by looking it up.
My concern is about clean air in houses with ventilation systems. This is what I am trying to find out here—what people are willing to do to ensure the system continues to operate cleanly.
C
chand198622 Oct 2018 09:19A radiator in winter is just a heat exchanger with your living space. Always this constant contamination of the living area with the dirty heating water... oh wait, no!
Exactly zero dust comes from the exhaust air into the fresh air.
First, they will probably ask themselves whether the system is even running uncleanly. You can find everything on Google – including false information. And what is in the pipes is not necessarily in the indoor air.
Exactly zero dust comes from the exhaust air into the fresh air.
Luftikuss schrieb:
I am concerned about clean air in houses with ventilation systems. What I am trying to find out here is what people are willing to do with such systems to keep them running clean.
First, they will probably ask themselves whether the system is even running uncleanly. You can find everything on Google – including false information. And what is in the pipes is not necessarily in the indoor air.
The Passive House standard is intended to apply to new buildings from January 1, 2021, provided that the 2020 Energy Saving Ordinance (EnEV 2020) is implemented as planned. Everything is still uncertain.
The supply air filter is dirty, which is to be expected.
The exhaust air filter has hardly any dirt.
No visible dirt has been found on the heat exchanger so far.
The summer cassette is spotless.
No dirt is visible on either the supply or exhaust air ducts installed within the house.
So far, I see no need to clean the ventilation system.
The supply air filter is dirty, which is to be expected.
The exhaust air filter has hardly any dirt.
No visible dirt has been found on the heat exchanger so far.
The summer cassette is spotless.
No dirt is visible on either the supply or exhaust air ducts installed within the house.
So far, I see no need to clean the ventilation system.
M
Mottenhausen22 Oct 2018 11:03Luftikuss schrieb:
I installed my system myself, so I’m not the only one who has done that.Exactly, anyone who goes through the effort of installing such a system themselves won’t pay someone over 600€ to clean it. They know exactly where and how to open and clean the system they installed on their own.
But just as a side note: when you installed your system yourself, didn’t you take a closer look at the heat exchanger? Or at least read the technical documentation? I always appreciate when someone wants to build a second source of income. That should be supported. BUT: the first step is always to find someone who knows the ropes—legally, tax-wise, technically, and in terms of marketing. With this thread, you have probably alienated more potential customers than you have gained. That could have been avoided. You don’t know how an air-to-air heat exchanger works, but you want to clean it? Sorry, customers will notice that quickly and will dismiss you faster than you can imagine.
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