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.
L
Luftikuss21 Oct 2018 20:50Hello Bookstar
I change the filters every 6 months. However, cleaning is still absolutely necessary—I see it live and in color here on site.
I’m happy to show it with an inspection camera.
Also, if conical filters are used in the ceilings, the system has to work against higher resistance. This is not good for the system in the long run.
The system is supposed to last over 30 years.
I change the filters every 6 months. However, cleaning is still absolutely necessary—I see it live and in color here on site.
I’m happy to show it with an inspection camera.
Also, if conical filters are used in the ceilings, the system has to work against higher resistance. This is not good for the system in the long run.
The system is supposed to last over 30 years.
Luftikuss schrieb:
From my point of view, the indoor air (exhaust air) goes into the heat exchanger and depending on the heat recovery rate, it is returned to the supply air. At least, that's how it works with my Alpha Innotec system. As a result, dust particles will always enter the fresh air.That would completely undermine the principle of the ventilation system if the "used" exhaust air were returned.
Look up cross-flow heat exchangers as an introductory read.
Don’t get me wrong, there will be people who spend several hundred euros on pipe cleaning. But with proper system use, this is something you only need to do every 10 years, if at all.
L
Luftikuss21 Oct 2018 21:30Don’t get me wrong. Take your phone, use the camera to look into your ceiling vents, and check out your ducts. You’ll be surprised.
Luftikuss schrieb:
So I see it because the indoor air (exhaust air) goes into the heat exchanger and, depending on the recovery rate, returns into the supply air.No. The exhaust air goes outside – the supply air is sourced independently from outside.
L
Luftikuss21 Oct 2018 21:37As mentioned, dust in both supply air and exhaust air ducts must be removed.
VDI 6022 recommends cleaning the ducts every 3 years. It is in your own best interest to clean both the exhaust and supply air systems.
VDI 6022 recommends cleaning the ducts every 3 years. It is in your own best interest to clean both the exhaust and supply air systems.
M
Mottenhausen22 Oct 2018 00:02Regular cleaning certainly can’t hurt. However, I’m a bit skeptical about “disinfection”—it shouldn’t smell like chemicals afterward, which means there would have to be a 100% odorless product... does such a thing exist?
Otherwise, I believe about 70% of people take care of cleaning the ducts themselves by opening maintenance hatches and brushing inside, while vacuuming at the same time. This might not be as effective as your method, but the brush costs only €25 (about $27) as a one-time expense. The remaining 30% don’t want to get their hands dirty and sign a maintenance contract when the system is installed, so they aren’t customers in this case. Cleaning only controlled residential ventilation systems is a very narrow niche that a cleaning company or building services firm can offer, making it worthwhile. But offering ONLY controlled residential ventilation cleaning... well, that would be like a car workshop that only does oil changes.
Otherwise, I believe about 70% of people take care of cleaning the ducts themselves by opening maintenance hatches and brushing inside, while vacuuming at the same time. This might not be as effective as your method, but the brush costs only €25 (about $27) as a one-time expense. The remaining 30% don’t want to get their hands dirty and sign a maintenance contract when the system is installed, so they aren’t customers in this case. Cleaning only controlled residential ventilation systems is a very narrow niche that a cleaning company or building services firm can offer, making it worthwhile. But offering ONLY controlled residential ventilation cleaning... well, that would be like a car workshop that only does oil changes.
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