ᐅ Trench Collector Ground Source Heat Pump or Air Source Heat Pump?
Created on: 1 Mar 2015 10:25
L
Legurit
Hello everyone,
We had our first meeting with the builder yesterday. He quickly dismissed the heating topic since there is no gas connection but gave us some contact addresses.
The house has roughly 190 m² (2,045 sq ft) of living space and a heating demand of 6,600 kWh/year, or about 6 kW heating load.
So far, we have planned to install a ground-source heat pump with a horizontal collector, but the builder rightly pointed out that he would prefer some maneuvering space around the house. In the pink forum, there is a community advocating for DIY horizontal collectors, saying that the trenches including materials could be done for around €2,000. Including the heat pump gross price of €10,000, that would be €12,000 total. An air-source heat pump would cost at least that much for the unit alone.
Unfortunately, we are already a bit overwhelmed with the house planning and are not sure if we would trust ourselves to do the DIY installation. Does anyone have experience with the costs when contracting out the trenching and pipe laying?
As for consumption, we found a factor of about 1.5. So the air-source heat pump would be around 50% more expensive to operate than the ground-source heat pump, but we wouldn’t have to dig (in absolute terms, about €180 per year). We are also unsure whether having a photovoltaic system would be beneficial or not (we are skeptical).
Thanks for your experiences and advice.
We had our first meeting with the builder yesterday. He quickly dismissed the heating topic since there is no gas connection but gave us some contact addresses.
The house has roughly 190 m² (2,045 sq ft) of living space and a heating demand of 6,600 kWh/year, or about 6 kW heating load.
So far, we have planned to install a ground-source heat pump with a horizontal collector, but the builder rightly pointed out that he would prefer some maneuvering space around the house. In the pink forum, there is a community advocating for DIY horizontal collectors, saying that the trenches including materials could be done for around €2,000. Including the heat pump gross price of €10,000, that would be €12,000 total. An air-source heat pump would cost at least that much for the unit alone.
Unfortunately, we are already a bit overwhelmed with the house planning and are not sure if we would trust ourselves to do the DIY installation. Does anyone have experience with the costs when contracting out the trenching and pipe laying?
As for consumption, we found a factor of about 1.5. So the air-source heat pump would be around 50% more expensive to operate than the ground-source heat pump, but we wouldn’t have to dig (in absolute terms, about €180 per year). We are also unsure whether having a photovoltaic system would be beneficial or not (we are skeptical).
Thanks for your experiences and advice.
S
Sebastian7913 Apr 2015 19:31All certification details are included in the documents – it also states that the property owner must have this type of insurance, not the drilling company, which should already have it.
My drilling company is currently checking with their insurance and will update me.
The note is nice, but you need to specify the exact pump, etc. – how is that supposed to work when the data isn’t even fully known? How do they expect to approve an application when it’s not even certain that the pump meets the requirements (which it probably does, but it’s a government agency…)?
I will request a written response on this.
I consider a new pump from a reputable manufacturer to be mostly unproblematic – technically, these parts are relatively simple in design.
My drilling company is currently checking with their insurance and will update me.
The note is nice, but you need to specify the exact pump, etc. – how is that supposed to work when the data isn’t even fully known? How do they expect to approve an application when it’s not even certain that the pump meets the requirements (which it probably does, but it’s a government agency…)?
I will request a written response on this.
I consider a new pump from a reputable manufacturer to be mostly unproblematic – technically, these parts are relatively simple in design.
Okay, then arrange insurance through the drilling company – maybe that’s all we need.
Our drilling company, for example, only lists the WS120... on their website, not the WS120-2... so we’ll have to ask again. It’s a bit annoying since the plumbing and heating specialist should have already installed some pipes during the foundation slab phase...
Our drilling company, for example, only lists the WS120... on their website, not the WS120-2... so we’ll have to ask again. It’s a bit annoying since the plumbing and heating specialist should have already installed some pipes during the foundation slab phase...
N
neubau201517 Apr 2015 07:06Hello. If the subsidy is now included in the profitability comparison excluding follow-up costs (electricity), is there still a difference compared to an air-to-water heat pump?
S
Sebastian793 Jun 2016 14:06I thought your choice was fixed on the air-source heat pump? The seasonal performance factor (SPF) will ALWAYS be better with ground-source (brine) heat pumps compared to air-source ones – that’s simply how they work.
I would even go so far as to say that this type is always preferable to any other kind of heat pump – except for the costly drilling. You have to decide that for yourself, but with the drilling, you don’t need to worry about frost buildup in your garden soil or issues during the coldest part of winter.
I would even go so far as to say that this type is always preferable to any other kind of heat pump – except for the costly drilling. You have to decide that for yourself, but with the drilling, you don’t need to worry about frost buildup in your garden soil or issues during the coldest part of winter.
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