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
R
RotorMotor4 Mar 2022 10:25tomtom79 schrieb:
You don’t shut off a heat pump, and frequent cycling usually indicates the heating curve is set too high. This is the first time I’m hearing both of these.
guckuck2 schrieb:
This significantly increases efficiency, especially during transitional seasons, because in a new building, the heating can simply be turned off when it’s cold outside but still warm inside, and during the day there may be solar gains again. Not exactly, it is definitely more efficient. However, I didn’t spend so much time calculating for the bathrooms just to then adjust the heating curve by rooms based on solar gains.
Our bathrooms are located on the north side and only receive a little solar energy above the heat recovery ventilation system. If I were to place the control station in the living room, I would end up with a cold bathroom.
This way, everything is nicely controlled via outdoor temperature and return flow, and I find that works well. Of course, I could operate the system more efficiently, but that would come at the expense of comfort.
RotorMotor schrieb:
This is the first time I’m hearing about both There are many things you haven’t heard yet, but if there’s one thing I’ve learned in 7 years of working with heat pumps, it’s about their basic settings. Of course, each has its own specific features and adjustment options, but a heat pump must run through its cycles. That means using a low heating curve, disabling setback mode, and so on. Naturally, many factors come into play, but there are fundamental rules.
H
Hausbau 554 Mar 2022 10:43tomtom79 schrieb:
You don’t turn off a heat pump, and frequent cycling often indicates the heating curve is set too high.I have had the heat pump running for 17 days now, with a total of 83 cycles, so less than 5 per day. Most of these cycles happen during the night. The heating curve has been set to 0.2 since the beginning.H
Hausbau 554 Mar 2022 10:51Hausbau 55 schrieb:
I have had the heat pump running for 17 days now, with a total of 83 cycles, so less than 5 per day. Most of these cycles occur at night. The heating curve has been set to 0.2 from the start. I am also considering my photovoltaic system. During the day, I set the temperature to 22 degrees. From 8 a.m. to 5 p.m., the electricity comes from photovoltaic panels. We have 17.5 cm (7 inches) exterior walls made of sand-lime brick with 20 cm (8 inches) of mineral wool insulation, and 11.5 cm (4.5 inches) interior walls of sand-lime brick. This creates ideal conditions for utilizing the thermal mass of the screed as well as the exterior and interior walls. There is almost no temperature drop overnight (with outside temperatures between 0 and minus 3 degrees Celsius (32 and 27°F); it hasn’t been colder yet). Now, I would like to run the heat pump only during the day and have it switched off at night. How can I block the heat pump from running at night?
Similar topics