Hello everyone,
I would like to gather information about different heating systems. I am a complete beginner and work in an office environment, so unfortunately, I have very little prior knowledge.
We have decided to build a single-family house using timber frame construction. The options we are considering are:
Gas condensing boiler and ventilation system
Air-to-water heat pump with ventilation function
Air-to-water heat pump with outdoor or indoor installation
and air-to-air heat pump
The only information we received was that an air-to-water heat pump results in very low electricity costs. The air-to-air heat pump was heavily promoted by Bien-Zenker because it can cool rooms very effectively, which you would notice. Furthermore, for this company, the cooling function is only enabled in a house with a 55 energy standard. For a 40 standard, you have to include a photovoltaic system; otherwise, the function is locked. In a 40 plus house, however, it is enabled again.
We are planning an Efficiency House 40 with appropriate heating and cooling technology. Which option makes the most sense there?
150 m² (1600 sq ft) single-family house, 600 m² (6500 sq ft) plot.
I would like to gather information about different heating systems. I am a complete beginner and work in an office environment, so unfortunately, I have very little prior knowledge.
We have decided to build a single-family house using timber frame construction. The options we are considering are:
Gas condensing boiler and ventilation system
Air-to-water heat pump with ventilation function
Air-to-water heat pump with outdoor or indoor installation
and air-to-air heat pump
The only information we received was that an air-to-water heat pump results in very low electricity costs. The air-to-air heat pump was heavily promoted by Bien-Zenker because it can cool rooms very effectively, which you would notice. Furthermore, for this company, the cooling function is only enabled in a house with a 55 energy standard. For a 40 standard, you have to include a photovoltaic system; otherwise, the function is locked. In a 40 plus house, however, it is enabled again.
We are planning an Efficiency House 40 with appropriate heating and cooling technology. Which option makes the most sense there?
150 m² (1600 sq ft) single-family house, 600 m² (6500 sq ft) plot.
N
nordanney26 Jun 2020 11:23That's right, over 40. My solar installer specifically answered my question about a storage system with "Please don't do that."
nordanney schrieb:
But why always with a storage system? It wasn’t the seller’s idea, more mine. The general contractor even advised against a battery because the technology is still in its early stages. My understanding (not expertise) is as follows: We would have an air-to-water heat pump that mainly needs to run during winter. Both of us are at work during the day, so the storage system would charge (less in winter than in summer, for example). When we come home, we could use the stored electricity for lighting and heating since photovoltaic production is lower in the afternoon and evening.
I’m open to learning more. Maybe a gas boiler plus photovoltaic system (initially without storage) would make more sense?
Are there different types of gas boilers as well? Some better/more efficient, etc.? So perhaps, considering that an air-to-water heat pump uses electricity, it could be more cost-effective (given current prices)?
T
T_im_Norden26 Jun 2020 13:31This does not work.
In short, selling excess electricity is still the better option at the moment, unless you receive the battery for free through subsidies.
In short, selling excess electricity is still the better option at the moment, unless you receive the battery for free through subsidies.
N
nordanney26 Jun 2020 13:35Ybias78 schrieb:
It wasn’t the seller, more like myself. The general contractor even advised against batteries because the technology is still in its infancy. My idea (not knowledge ) is as follows: We would have an air-to-water heat pump that mainly operates in winter. Both of us are at work during the day, and the storage system gets charged (in winter less than in summer, for example). When we come home, we could use the stored electricity for lighting and heating since less photovoltaic power is generated in the afternoon/evening. What size storage system and what size and orientation of photovoltaic system are you planning? Because the fact is that the output of the photovoltaic system in winter is at most a drop in the bucket (likely around 5-10% of the annual yield for the three main winter months: November, December, January). You should get a yield forecast showing what will be produced in winter and on how many days. The self-consumed electricity is also not free — think taxable benefits and income tax implications.
In short: What is being offered to you, and at what price? What do the production, consumption, and storage calculations look like? Then, as part of your cost analysis, you will realize that the system makes sense, but you’ll also need to buy the electric car.
@nordanney Thanks, I will do that.
The question remains whether an air-to-water heat pump combined with a photovoltaic system is a good option. Or, if you have a fully serviced plot including a gas connection, would it be better to install a gas boiler. In that case, are there differences between gas boilers? What should you pay attention to? So many questions.
The question remains whether an air-to-water heat pump combined with a photovoltaic system is a good option. Or, if you have a fully serviced plot including a gas connection, would it be better to install a gas boiler. In that case, are there differences between gas boilers? What should you pay attention to? So many questions.
Air-to-water heat pump makes sense
Photovoltaic system is sensible
If you use gas, you still need solar or photovoltaic for the energy saving regulation, if I’m not mistaken
I wouldn’t consider the photovoltaic system in connection with the air-to-water heat pump. Photovoltaics produce little electricity when the air-to-water heat pump requires the most.
Photovoltaic system is sensible
If you use gas, you still need solar or photovoltaic for the energy saving regulation, if I’m not mistaken
I wouldn’t consider the photovoltaic system in connection with the air-to-water heat pump. Photovoltaics produce little electricity when the air-to-water heat pump requires the most.
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