Hello,
We are planning to build a house and will start soon.
Now we have one question: our heating installer wants to install a gas boiler and ventilation system from Junkers.
So the general question is, who has experience with Junkers devices? Are they good or bad? Or would it be better to choose another manufacturer? For example, Wolf? Wolf seems to be reasonably priced.
Best regards
We are planning to build a house and will start soon.
Now we have one question: our heating installer wants to install a gas boiler and ventilation system from Junkers.
So the general question is, who has experience with Junkers devices? Are they good or bad? Or would it be better to choose another manufacturer? For example, Wolf? Wolf seems to be reasonably priced.
Best regards
Bauexperte schrieb:
....Hardly, you have nothing to do with the BV Passive House near Bonn. Then I also have no documents.Best regards
D
DerBjoern4 Jul 2014 10:39Here’s something on the topic.
Junkers, like many other brands, is a reliable and well-established brand that belongs to the Bosch group.
I personally have a Junkers condensing boiler and a Junkers ventilation system.
However, I am not 100% satisfied with the ventilation. Specifically, the bypass damper does not work the way I expect and how it is handled by other manufacturers. The bypass control is solely focused on energy recovery, even when outdoor temperatures are above 30°C (86°F).
Ideally, I would expect the bypass to be closed during the day when temperatures are high in summer, so the heat recovery works as a "cool recovery" in this case. At night, when the outside temperature drops below the indoor temperature, the bypass should open to allow cooler air into the house.
With my Junkers system, however, I can only set the bypass to open from temperature X, where X must be at least 15°C (59°F). So the bypass opens as soon as 15°C is reached. That’s fine at night, but during the day the bypass is also open at 25, 30, or 35°C (77, 86, or 95°F).
In practice, the bypass is unusable for me. I will disconnect it from the system controller and control it through my home automation system instead…
So, if bypass control is important to you, it’s worth checking this carefully before purchasing…
Junkers, like many other brands, is a reliable and well-established brand that belongs to the Bosch group.
I personally have a Junkers condensing boiler and a Junkers ventilation system.
However, I am not 100% satisfied with the ventilation. Specifically, the bypass damper does not work the way I expect and how it is handled by other manufacturers. The bypass control is solely focused on energy recovery, even when outdoor temperatures are above 30°C (86°F).
Ideally, I would expect the bypass to be closed during the day when temperatures are high in summer, so the heat recovery works as a "cool recovery" in this case. At night, when the outside temperature drops below the indoor temperature, the bypass should open to allow cooler air into the house.
With my Junkers system, however, I can only set the bypass to open from temperature X, where X must be at least 15°C (59°F). So the bypass opens as soon as 15°C is reached. That’s fine at night, but during the day the bypass is also open at 25, 30, or 35°C (77, 86, or 95°F).
In practice, the bypass is unusable for me. I will disconnect it from the system controller and control it through my home automation system instead…
So, if bypass control is important to you, it’s worth checking this carefully before purchasing…
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