ᐅ New Construction + Exhaust Air Heat Pump According to Provider, Is a Trench Collector Affordable?
Created on: 13 Mar 2016 16:19
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expose
Hello,
I am currently working on a new construction project that is approaching the final stages, except for the heating system. Originally, a gas boiler with solar support for domestic hot water was planned. This would make the house comply with the KfW 70 energy standard. It is a bungalow with 125 m² (1345 sq ft) of living space (4 rooms, kitchen integrated into the living area, bathroom, toilet, utility room) on an 835 m² (8980 sq ft) plot.
The builder has now proposed an exhaust air heat pump with decentralized ventilation. The additional costs, including extra insulation of the floor slab to meet the KfW 55 standard, are around 6,000–7,000 euros. In principle, I like the idea of being independent from fossil fuels, but after looking closely at such a heating system, I am not completely convinced by the concept. Especially the ventilation seemed questionable to me, as there was a noticeable cold draft and the rooms felt somewhat stuffy overall.
The builder himself has no experience with these heat pumps yet but plans to install several in the future.
During my research on exhaust air heat pumps, I also came across heat pump technology with ground loop collectors and find this concept much more interesting.
The fact is, the extra cost compared to the gas boiler, about 6,000–7,000 euros, represents the upper limit of my budget. It must not get more expensive.
I am a bit unsure about how to proceed. How can I determine whether a ground loop collector would be suitable, and whether it would fit my budget? Are there possibly other heat pumps with external units that might be an option? Or could my concerns about the exhaust air heat pump be unfounded?
Thank you in advance.
I am currently working on a new construction project that is approaching the final stages, except for the heating system. Originally, a gas boiler with solar support for domestic hot water was planned. This would make the house comply with the KfW 70 energy standard. It is a bungalow with 125 m² (1345 sq ft) of living space (4 rooms, kitchen integrated into the living area, bathroom, toilet, utility room) on an 835 m² (8980 sq ft) plot.
The builder has now proposed an exhaust air heat pump with decentralized ventilation. The additional costs, including extra insulation of the floor slab to meet the KfW 55 standard, are around 6,000–7,000 euros. In principle, I like the idea of being independent from fossil fuels, but after looking closely at such a heating system, I am not completely convinced by the concept. Especially the ventilation seemed questionable to me, as there was a noticeable cold draft and the rooms felt somewhat stuffy overall.
The builder himself has no experience with these heat pumps yet but plans to install several in the future.
During my research on exhaust air heat pumps, I also came across heat pump technology with ground loop collectors and find this concept much more interesting.
The fact is, the extra cost compared to the gas boiler, about 6,000–7,000 euros, represents the upper limit of my budget. It must not get more expensive.
I am a bit unsure about how to proceed. How can I determine whether a ground loop collector would be suitable, and whether it would fit my budget? Are there possibly other heat pumps with external units that might be an option? Or could my concerns about the exhaust air heat pump be unfounded?
Thank you in advance.
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nordanney5 Apr 2016 09:05Goldi09111 schrieb:
Still living in a rental apartment What’s the difference compared to owning your own house? You are wasting energy.
Goldi09111 schrieb:
b) despite having a controlled ventilation system, I can’t imagine that the air in the bedroom is cool enough (but this is a personal assumption) That is a personal perception. Whether with or without a controlled ventilation system, the air temperature throughout a new building is similar everywhere. However, with a controlled ventilation system, you always have fresh air. Also, you don’t have to sleep at 10°C (50°F) in the bedroom; 20°C (68°F) works just as well.
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Sebastian795 Apr 2016 09:06Some prefer it cooler – so either the air conditioning is on or the windows are open. Some also enjoy the sounds of nature.
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Sebastian795 Apr 2016 11:24Normally, you cannot hear the ventilation of a central system when set to the normal position – in ABSOLUTE silence and with good hearing, you might possibly notice a very faint sound.
The device itself is audible and should be placed in a separate non-living space.
The device itself is audible and should be placed in a separate non-living space.
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nordanney5 Apr 2016 11:26Curly schrieb:
Hello,
how is it with the noise from a controlled mechanical ventilation system? Do you hear the ventilation all the time and how loud is it in the room where it is installed?
Best regards,
Sabine If the house is completely silent, you can notice a very slight air noise. This only works for us at night and when the dog isn't breathing heavily. Otherwise, you don't notice the controlled mechanical ventilation system at all.
It gets louder, for example, at full power when we are doing something like raclette. But then you do want a high ventilation rate.
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nordanney5 Apr 2016 11:27P.S. The device itself already produces noticeable noise, so it should be installed, for example, near the heating system, in the utility room, basement, or attic.
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