Ventilation with heat and moisture recovery from exhaust air

We do not take just any ventilation system, but one with moisture and heat recovery from exhaust air and 20 cm pipes for extremely quiet and economical operation.

For 3 decades I have observed that ventilation systems with heat recovery are almost not spreading because of absurdly high prices. Here I explain why a ventilation system, which any ventilation engineer would call “The Mother of Oversizing”, is the most economical solution and is part of the basic equipment of a “GEMINI next Generation” house.

Download video: 1920x1080 182 MB PDF for the Video

00:00 Start
00:14 AustoBau Salzburg and Wels energy saving fair first seen in 1992
00:59 Absurd surcharge for comfort ventilation at prefab house manufacturer
02:06 Residential 30-year loan calculator
02:49 Would such an upcharge list be conceivable when buying a car?
03:43 Effect of pipe diameter on electricity consumption
05:14 Air exchange and efficiency diagram
06:29 Assumed efficiencies at 100 m³/h
07:12 Sunny dry cold -5° 20% outside - 18° 40% inside with 70 m³/h
09:00 Cloudy humid 2° 80% outside - 18° 40% inside with 70 m³/h
10:14 Sunny dry cold -5° 20% outside - 22° 50% inside with 100 m³/h
11:28 Cloudy humid 2° 80% outside - 22° 50% inside with 100 m³/h
11:41 Sunny dry cold -5° 20% outside - 25° 50% inside with 100 m³/h
13:29 Cloudy humid 2° 80% outside - 25° 50% inside with 100 m³/h
13:46 CO2 chart for 2 people, 165 m³, 0, 20, 50, 100, 200, 500 m³/h
15:21 CO2 diagram for 6 people
15:36 CO2 diagram for 16 people
16:37 Remove cover, behind it connections power and RS485 Modbus
16:57 USB to RS485 adapter for connection to smart home computer
17:48 Blower door test common for passive houses
18:24 Ventilation system in normal operation
18:40 Ventilation system as Blower door Test: much pressure difference, the house is tight
18:56 Very little pressure difference only: the house is leaking
19:13 Unwanted air exchange through leaks
19:52 Air risk defense mode: in case of nuclear accident and radioactive cloud
21:28 Behind the service door
22:55 End

Musik: Andy Mangele

Will be used like it is

This ventilation unit was purchased in 2021 during the “proof of concept” phase before the Inc. was established. It is the only unit planned for mass production homes without further modification.

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