ᐅ The heating options – air-to-air heat pump, air-to-water heat pump, or gas?
Created on: 10 Dec 2015 10:48
H
herann
Hello everyone,
I have long understood that heating is a complex topic. However, the fact that different suppliers give such varied recommendations only adds to our confusion.
We quickly decided on the following heating system – an air-to-water heat pump with controlled ventilation, supported by a photovoltaic system. Our reasons for this choice are:
Strangely, this supplier also offers air-to-water heat pumps.
What do you think about this statement?
Based on my research so far, I understood the situation quite the opposite and have found more negative feedback concerning air-to-air heat pumps.
We were also informed about the “noise” produced by an air-to-water heat pump. We would prefer not to have a split system but a single unit placed in the basement. At the moment, I can’t imagine there would be a noise issue.
Does anyone have experience heating with an air-to-water heat pump?
Additionally, we have the option of a gas condensing boiler (including underfloor heating). Initially, we dismissed this idea, but the lower initial investment costs are making it more appealing now.
Is there anyone who has built with this and can share some insights?
Ultimately, it probably depends on how well the house is insulated, but some kind of heating system has to be installed, and we want to choose the “right” one...
Thank you very much in advance.
I have long understood that heating is a complex topic. However, the fact that different suppliers give such varied recommendations only adds to our confusion.
We quickly decided on the following heating system – an air-to-water heat pump with controlled ventilation, supported by a photovoltaic system. Our reasons for this choice are:
- No dependence on fossil fuels
- Low running costs due to the photovoltaic system
- Future-proof, since with underfloor heating installed, it would be easier to switch to newer technologies in 25-30 years
- Comfortable living space thanks to even heat distribution through the floor
Strangely, this supplier also offers air-to-water heat pumps.
What do you think about this statement?
Based on my research so far, I understood the situation quite the opposite and have found more negative feedback concerning air-to-air heat pumps.
We were also informed about the “noise” produced by an air-to-water heat pump. We would prefer not to have a split system but a single unit placed in the basement. At the moment, I can’t imagine there would be a noise issue.
Does anyone have experience heating with an air-to-water heat pump?
Additionally, we have the option of a gas condensing boiler (including underfloor heating). Initially, we dismissed this idea, but the lower initial investment costs are making it more appealing now.
Is there anyone who has built with this and can share some insights?
Ultimately, it probably depends on how well the house is insulated, but some kind of heating system has to be installed, and we want to choose the “right” one...
Thank you very much in advance.
echti25 schrieb:
I meant the control system for nighttime. You actually want it cooler then.
This is possible with radiators, but not with underfloor heating... It is a common misconception that a separate control is necessary... usually because people come from an apartment or a house with radiators and are used to "no other way"... but there are already numerous threads about this... so back to the topic...
I still maintain that speculating and recalculating based on hypothetical energy prices ultimately doesn’t lead anywhere. As mentioned, we’re talking about just a few euros per month. I cannot understand the previously mentioned 80 euros when comparing modern heating systems in new builds.
In other words, from a purely financial standpoint, it doesn’t make much difference whether it’s gas, pellets, or a heat pump. You can calculate the numbers to support any opinion you have. As long as the system is properly planned and installed, it doesn’t really matter, because the differences in heating costs are marginal.
So, just relax and focus on the house’s specific requirements. Then choose the system that fits those needs best.
By the way, optimization can become a time-consuming hobby, one I indulge in occasionally myself. But you always have to keep things in perspective ;-).
In other words, from a purely financial standpoint, it doesn’t make much difference whether it’s gas, pellets, or a heat pump. You can calculate the numbers to support any opinion you have. As long as the system is properly planned and installed, it doesn’t really matter, because the differences in heating costs are marginal.
So, just relax and focus on the house’s specific requirements. Then choose the system that fits those needs best.
By the way, optimization can become a time-consuming hobby, one I indulge in occasionally myself. But you always have to keep things in perspective ;-).
We visited the energy consulting center last week. Unfortunately, it was a waste of time... the "consultant" initially didn’t even know what an air-to-water heat pump is and instead spent 20 minutes clicking around the KFW website 🙁
I have now often seen / read / heard that you should know the primary energy demand of the house, or that a heating load calculation should be done. Should these data be provided by the suppliers (also before signing)? Or is there a way to find out or calculate this yourself?
Thank you!
I have now often seen / read / heard that you should know the primary energy demand of the house, or that a heating load calculation should be done. Should these data be provided by the suppliers (also before signing)? Or is there a way to find out or calculate this yourself?
Thank you!
Heating load calculation can be done in a simplified way on your own – ideally for each room... even better: your heating installer should do it, as they can usually do it much more accurately with some luck.
We were able to find the primary energy demand – at least theoretically – in our energy saving ordinance documents.
However, the primary energy demand is mainly relevant for the KFW calculations and, of course, for the energy saving ordinance – what you actually pay for energy can be somewhat different.
You need the heating load calculation to select your heating system (since heaters usually come in steps of 2 kW, a rough estimate is often sufficient) and for the design of your underfloor heating – specifically to determine the pipe spacing.
We were able to find the primary energy demand – at least theoretically – in our energy saving ordinance documents.
However, the primary energy demand is mainly relevant for the KFW calculations and, of course, for the energy saving ordinance – what you actually pay for energy can be somewhat different.
You need the heating load calculation to select your heating system (since heaters usually come in steps of 2 kW, a rough estimate is often sufficient) and for the design of your underfloor heating – specifically to determine the pipe spacing.
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