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.
G
Goldi091114 Apr 2016 19:52So, my window stays open in winter as long as it is not colder than -20°C (-4°F).
hawken schrieb:
I have been using an air-to-water heat pump for three years now and am very satisfied.
Heating and hot water costs are around €65 per month / all year round.
Bathroom/living room temperature around 23°C (73°F), total living area about 200m² (2,150 sq ft).
Noise disturbance? When I stand on the porch at night and hear the oil burner pump from the neighbor’s house (through the chimney), it sounds about as loud as my heat pump. And in summer, it hardly runs at all, and in winter the windows are closed anyway.
PS: I opted not to install a ventilation system – I didn’t feel comfortable with it. Which heat pump model do you have installed?
What is your house insulation standard? What heating load does your house require?
Thank you.
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nordanney4 Apr 2016 22:17Why do you open the windows at night??? Is it to warm up the outside air around the house and prevent it from freezing from the outside?
That’s one reason for installing a mechanical ventilation system with heat recovery in new buildings...
That’s one reason for installing a mechanical ventilation system with heat recovery in new buildings...
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Goldi091114 Apr 2016 22:28because I
a) still live in a rental apartment
b) cannot imagine, despite having controlled mechanical ventilation, that the air in the bedroom is cool enough (this is a personal assumption)
a) still live in a rental apartment
b) cannot imagine, despite having controlled mechanical ventilation, that the air in the bedroom is cool enough (this is a personal assumption)
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Sebastian794 Apr 2016 22:29She isn’t either – I can’t get it out of my wife either.
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