Hello,
We are starting to get really frustrated... every builder tells us something different...
We want to build a 130sqm (1,399 sq ft) KfW 70 house with the living room facing south, and we are unsure whether to choose gas or an air source heat pump. Some providers, at almost the same price level, offer us air source heat pumps and claim that the annual costs are significantly (30%) lower compared to gas, while others doubt this.
We understand that insulation with gas/solar systems is usually better because an air source heat pump boosts efficiency more towards KfW 70 standards compared to gas/solar, which might argue in favor of gas. An air source heat pump might fail somewhat sooner, and in case of problems, you can usually get quick and competent local support with gas. With air source heat pumps, there could be more difficulties. Additionally, the noise of air source heat pumps (in our case about 3 meters (10 feet) from the neighbor) is not insignificant. Some say that sooner or later, everyone ends up having issues with neighbors for this reason.
We are interested in air source heat pumps with storage tanks from these providers: Vaillant, Mitsubishi Zubadan, and Rotex.
What we are really curious about is the annual cost for heating and hot water with both systems.
We live near Kassel.
What should we choose, and what would be cost-effective TODAY? What is your opinion on Vaillant?
Regards
Gigi
We are starting to get really frustrated... every builder tells us something different...
We want to build a 130sqm (1,399 sq ft) KfW 70 house with the living room facing south, and we are unsure whether to choose gas or an air source heat pump. Some providers, at almost the same price level, offer us air source heat pumps and claim that the annual costs are significantly (30%) lower compared to gas, while others doubt this.
We understand that insulation with gas/solar systems is usually better because an air source heat pump boosts efficiency more towards KfW 70 standards compared to gas/solar, which might argue in favor of gas. An air source heat pump might fail somewhat sooner, and in case of problems, you can usually get quick and competent local support with gas. With air source heat pumps, there could be more difficulties. Additionally, the noise of air source heat pumps (in our case about 3 meters (10 feet) from the neighbor) is not insignificant. Some say that sooner or later, everyone ends up having issues with neighbors for this reason.
We are interested in air source heat pumps with storage tanks from these providers: Vaillant, Mitsubishi Zubadan, and Rotex.
What we are really curious about is the annual cost for heating and hot water with both systems.
We live near Kassel.
What should we choose, and what would be cost-effective TODAY? What is your opinion on Vaillant?
Regards
Gigi
R.Hotzenplotz schrieb:
And if everything goes reasonably, we should manage with the originally planned drilling costs of €15,000 and be able to stick to the original plan.Before placing the order, consider the funding from progres.nrw, which is available again in 2018. It offers €10 per meter drilled.
Personally, I wouldn’t pay €15,000 to drill a hole. However, I do think it’s generally a nice type of heating system.
R
R.Hotzenplotz8 Jan 2018 21:50ares83 schrieb:
Since you haven't signed yet, also check out the €4500 (about $5000) grant from BAFA.I already have that on my agenda. From 2018 onward, it can only be applied for online together with the installer.
Lumpi_LE schrieb:
15,000 for the hole... I never quite understand why people do that, you won’t recover that cost even after 100 years of heating compared to an air-to-water heat pump.
Do you have facts or is it just your opinion? Besides the costs, there are other advantages: for example, no outdoor unit taking up space, often making noise (especially after some time, air heat pumps can produce quite strong noises)... I also have a ground-source heat pump and, compared to my neighbors with expensive air-to-water heat pumps, I see a clear difference in costs. If my conditions stay the same, I will actually break even well before the borehole’s lifespan ends. By the way, replacing a ground-source heat pump is cheaper than replacing an air-to-water heat pump at the end of its service life...
R
R.Hotzenplotz9 Jan 2018 05:12Saruss schrieb:
I also have a ground source heat pump and, compared to my neighbors with an expensive air-to-water heat pump, I notice a significant difference in costs.Could you quantify that?