ᐅ Air-to-water or air-to-air heat pump for a new single-family home, 150 sqm?
Created on: 25 Jul 2015 15:58
L
larina
Hello
There are probably similar topics to my question already, but many of the terms still feel like foreign words to me.
Our situation:
We are planning to build a new single-family house of 150sqm (1,615 sq ft) in timber frame construction (prefabricated house) in 2016/2017.
The builder’s “special offer” includes an air-to-air heat pump (Nibe750) for €9,000.
In our development area, neither natural gas connection nor geothermal energy is possible. We do not want either a gas or oil tank.
Now we are facing the question: air-to-air heat pump or air-to-water heat pump?
What are the advantages and disadvantages? What should we consider when making our decision?
Our current plans:
- Underfloor heating
- Possibly solar panels
- Conduits planned for potential future photovoltaic system
- Controlled mechanical ventilation system
Now my question to you:
Have you faced a similar decision and what experiences have you had?
Is an air-to-water heat pump really relatively noisy?
Maybe someone with professional knowledge about heating systems can provide us with information.
Many thanks in advance for reading my questions
There are probably similar topics to my question already, but many of the terms still feel like foreign words to me.
Our situation:
We are planning to build a new single-family house of 150sqm (1,615 sq ft) in timber frame construction (prefabricated house) in 2016/2017.
The builder’s “special offer” includes an air-to-air heat pump (Nibe750) for €9,000.
In our development area, neither natural gas connection nor geothermal energy is possible. We do not want either a gas or oil tank.
Now we are facing the question: air-to-air heat pump or air-to-water heat pump?
What are the advantages and disadvantages? What should we consider when making our decision?
Our current plans:
- Underfloor heating
- Possibly solar panels
- Conduits planned for potential future photovoltaic system
- Controlled mechanical ventilation system
Now my question to you:
Have you faced a similar decision and what experiences have you had?
Is an air-to-water heat pump really relatively noisy?
Maybe someone with professional knowledge about heating systems can provide us with information.
Many thanks in advance for reading my questions
Hello
I am bringing this topic back up.
At the moment, we are at the point where we want to have the heating load calculated as soon as possible and then choose a heating system.
Now my questions:
In the next few days, we have a detailed meeting with the architect, including a site visit to finalize the floor plan and design.
Only then can the heating load be calculated. Who do I commission for this? The prefab house company? A separate firm? I don’t want to embarrass myself, I’m just completely clueless ops:
Our current favorite:
- Ground-source heat pump with trench collector
- Fireplace
- Photovoltaic preparation
- NO solar thermal
One more question:
I would like a controlled ventilation system. Is this advisable? What exactly do I need to consider regarding the fireplace and the kitchen exhaust hood?
All of this feels so unclear to me, and I’m really afraid of making mistakes or regretting decisions later.
I am bringing this topic back up.
At the moment, we are at the point where we want to have the heating load calculated as soon as possible and then choose a heating system.
Now my questions:
In the next few days, we have a detailed meeting with the architect, including a site visit to finalize the floor plan and design.
Only then can the heating load be calculated. Who do I commission for this? The prefab house company? A separate firm? I don’t want to embarrass myself, I’m just completely clueless ops:
Our current favorite:
- Ground-source heat pump with trench collector
- Fireplace
- Photovoltaic preparation
- NO solar thermal
One more question:
I would like a controlled ventilation system. Is this advisable? What exactly do I need to consider regarding the fireplace and the kitchen exhaust hood?
All of this feels so unclear to me, and I’m really afraid of making mistakes or regretting decisions later.
D
Doc.Schnaggls14 Sep 2015 15:44Hello,
When building a new house, I would definitely not skip a mechanical ventilation system with heat recovery.
Here are some important points to consider:
- The wood-burning stove should have a DIBt certification, a self-closing door, and air supply dependent on the room air.
- The kitchen exhaust should be a recirculating hood.
If you meet these two requirements, you usually won’t need a differential pressure monitor for the stove or a window contact switch for the exhaust hood—although this depends on the local chimney sweep’s regulations.
Our heating technician adjusted our mechanical ventilation system to maintain a slight positive pressure inside the house. This provides extra safety, ensuring that if the stove is not perfectly sealed, no smoke gases enter the living space.
Best regards,
Dirk
When building a new house, I would definitely not skip a mechanical ventilation system with heat recovery.
Here are some important points to consider:
- The wood-burning stove should have a DIBt certification, a self-closing door, and air supply dependent on the room air.
- The kitchen exhaust should be a recirculating hood.
If you meet these two requirements, you usually won’t need a differential pressure monitor for the stove or a window contact switch for the exhaust hood—although this depends on the local chimney sweep’s regulations.
Our heating technician adjusted our mechanical ventilation system to maintain a slight positive pressure inside the house. This provides extra safety, ensuring that if the stove is not perfectly sealed, no smoke gases enter the living space.
Best regards,
Dirk
If you are using geothermal energy, make sure that the calculated annual performance factor (EPF) is greater than 4.5 so that you can secure the €4,000–4,500 (approx. $4,200–4,700) subsidy from BAFA. A well-known company that sells and installs horizontal ground collector heating systems across Germany is Metternich. Many home builders do not offer this and only provide deep borehole systems.
@jx7 :
Thanks for the tip about the subsidy and Metternich!
We are still considering whether to remove the heating system from the contract with the prefab house company – we still need to clarify how that would work...
@Doc.Schnaggls
Thanks for your reply. Everything has been noted.
Thanks for the tip about the subsidy and Metternich!
We are still considering whether to remove the heating system from the contract with the prefab house company – we still need to clarify how that would work...
@Doc.Schnaggls
Thanks for your reply. Everything has been noted.
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