Dear all,
I am currently facing a delivery issue with my heat pump (Vaillant Arotherm Plus VWL 75/6), which is not available from any dealer and according to the manufacturer will likely only be delivered in calendar week 6 of 2022. With winter approaching and my heating technician now using his instantaneous water heater at another customer’s place, the situation is becoming quite problematic. He is offering me a 5 kW (kilowatt) fan heater as a temporary solution, but I’m concerned that this will lead to very high energy costs.
For this reason, I have come up with the idea of getting a readily available monoblock heat pump to use just as a temporary measure until my Vaillant arrives. There seems to be a Panasonic model (probably from the series of the well-known and widely recommended “Geisha”) which appears to be suitable and is available at a reasonable price (around 3500 EUR). I would then resell it afterwards.
However, since the market for used heat pumps is rather small, I wonder whether this will really be cheaper than heating electrically with direct heating for three months. I have roughly calculated that in the worst case, I would have to expect heating costs of 2500-3000 EUR with electric direct heating (depending on extent and weather conditions).
Does anyone here have experience with this?
@Benutzer200, if I remember correctly, you once installed a Panasonic unit? Did you happen to sell it later on?
Well, I hope someone has faced a similar problem and can share their experience.
Kind regards
Tolentino
I am currently facing a delivery issue with my heat pump (Vaillant Arotherm Plus VWL 75/6), which is not available from any dealer and according to the manufacturer will likely only be delivered in calendar week 6 of 2022. With winter approaching and my heating technician now using his instantaneous water heater at another customer’s place, the situation is becoming quite problematic. He is offering me a 5 kW (kilowatt) fan heater as a temporary solution, but I’m concerned that this will lead to very high energy costs.
For this reason, I have come up with the idea of getting a readily available monoblock heat pump to use just as a temporary measure until my Vaillant arrives. There seems to be a Panasonic model (probably from the series of the well-known and widely recommended “Geisha”) which appears to be suitable and is available at a reasonable price (around 3500 EUR). I would then resell it afterwards.
However, since the market for used heat pumps is rather small, I wonder whether this will really be cheaper than heating electrically with direct heating for three months. I have roughly calculated that in the worst case, I would have to expect heating costs of 2500-3000 EUR with electric direct heating (depending on extent and weather conditions).
Does anyone here have experience with this?
@Benutzer200, if I remember correctly, you once installed a Panasonic unit? Did you happen to sell it later on?
Well, I hope someone has faced a similar problem and can share their experience.
Kind regards
Tolentino
Hmm, I’m checking under Information > Energy Data > Electricity Consumption > Heating. That roughly matches the amount shown on the electricity meter. Now I’ll see what the Tower shows.
I can’t really test the hot water yet because the tilers aren’t finished, so the fittings haven’t been installed... 🙁
At the Unitower, I can’t adjust anything at all. It only shows info: Energy Yield (7.1 kWh/day), there’s no real menu.
I think I need to download the professional trades manuals somewhere...
I can’t really test the hot water yet because the tilers aren’t finished, so the fittings haven’t been installed... 🙁
At the Unitower, I can’t adjust anything at all. It only shows info: Energy Yield (7.1 kWh/day), there’s no real menu.
I think I need to download the professional trades manuals somewhere...
R
RotorMotor4 Mar 2022 10:09OWLer schrieb:
20 kWh of electricity per day is already quite a lot.Our Arotherm Plus currently consumes at least the same amount. Yesterday, it was even 30 kWh in one day. There is still a lot of moisture in the building with us, and a lot more keeps coming in due to painting, plastering, and similar activities.
Because of this, the insulation effect is still somewhat limited, and even more importantly: there is a lot of ventilation happening.
Some contractors even keep the windows tilted open all day long.
Is it the same in Tolentino, or is everything already completely dry?
In any case, our bypass valve is still too wide open.
It’s making a lot of noise and is also very warm. I really need to turn it down further...
H
Hausbau 554 Mar 2022 10:12guckuck2 schrieb:
I would like to disagree with that. Indoor-controlled heating is more efficient, or at least the indoor temperature should be included in determining the required supply temperature. This significantly increases efficiency, especially during transitional periods, because in a new building the heating can simply stay off when it’s cold outside but still warm inside, and solar gains may occur during the day.
Following this principle, my heating system has been turned off on time since March 1st, and surprisingly, even without heating cycles, the house remains comfortably warm despite -2 degrees Celsius (28°F) at night and 10 degrees Celsius (50°F) during the day with corresponding solar gains. I will take your suggestion into consideration. Currently, our heat pump is set to 22 degrees Celsius (72°F) during the day and 20 degrees Celsius (68°F) at night. However, it cycles more frequently at night. What options are available to generally block the heating overnight? My heating technician mentioned that this might be possible through frost protection. If the outdoor temperature falls below 4 degrees Celsius (39°F), the heat pump automatically turns back on, with a time interval of about 4 hours. This setting might need adjustment. However, I cannot find any frost protection shutoff option in the menu.
Well, work is still ongoing, but not in the last few days, and no window was open yesterday either. Humidity is between 37-43%.
We’ll see if the lower heating curve shows any change by tomorrow or the day after. The weather is currently consistently overcast and cold, no sun.
I think the tower isn’t fully operational yet, at least not for hot water. The sensor reading shows hot water: off.
We’ll see if the lower heating curve shows any change by tomorrow or the day after. The weather is currently consistently overcast and cold, no sun.
I think the tower isn’t fully operational yet, at least not for hot water. The sensor reading shows hot water: off.
R
RotorMotor4 Mar 2022 10:20Tolentino schrieb:
Humidity between 37-43%Wow, that is really dry. Here, it often goes up to 80% again after a short time.
Then there must be another reason in your case.
Hausbau 55 schrieb:
I will take your advice. Currently, our heat pump is set to 22°C (72°F) during the day and 20°C (68°F) at night. However, it cycles more frequently at night.
What options are there for generally disabling the heating overnight? My heating technician said that this might be possible through frost protection. You don’t usually turn off a heat pump, and frequent cycling often indicates that the heating curve is set too high.
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