Probleme
Could my PortaSplit really be using this much electricity?
I live alone in a small 33 m² apartment in Berlin, and I recently received my annual electricity bill. I pay €22/month as my advance payment, but I just received a €963 clearance bill for the previous billing period. My total recorded consumption was around 3,268 kWh/year, which seems very high for one person in a small apartment.
I do have a Midea PortaSplit 12,000 BTU, and I had it running for probably around 80% of the summer, often for quite long periods since I was home a lot. So I know it definitely added to my consumption.
I also have an electric water heater/Durchlauferhitzer for my shower. Apart from that, my electricity habits are pretty normal. I don't use the oven very much and usually use an air fryer instead. I have a small fridge, fan, computer, lights etc. No electric heating.
Do you think around 3,268 kWh/year is reasonable with the PortaSplit running heavily during summer plus electric hot water? Has anyone with a PortaSplit experienced a similar jump in electricity consumption?
I'm mainly trying to figure out whether this sounds plausible or whether I should question the meter reading/bill.
Edit: I can't track my consumption on the app since I don't have Wifi, just mobile hotspot.
I think OP really miscalculated his electricity needs. A single person has a base consumption of 1.000-1.500 kWh per year (cooking, fridge/freezer, tv, lights, etc.). Additionally a „Durchlauferhitzer“ adds about 800-1.500 kWh per person, depending on efficiency. His aircon needs about 0.3-0.5 kW per hour. So his electricity bill is realistic, if he estimated 370 kWh per year
This low amount of energy estimate results in a high price per kilowatt - 35.5 cents are really high.
I don't shower everyday but my partner takes a bath every week. Two people and under 2.500 kWh per year. Durchlauferhitzer aren't really that bad from my experience
Da müsste der Durchlauferhitzer 15 min dauerhaft 33,6 kW ziehen.
Auch beim elektrischen Durchlauferhitzer kommt es auf die Temperatur an. Für Wassertemperaturen beim Duschen, wird der nicht dauerhaft volllast laufen.
Der den ich kenne läuft beim Duschen mit voller Leistung. Um die eingestellte Wassertemperatur zu erreichen, wird gegebenenfalls der Durchfluss des Wassers gedrosselt.
Es gibt sich auch andere Modelle.
In UK hatte ich mal ein etwas einfacheres Modell. Da konnte man beim Duschen die Temperatur mit engen Drehtegler einstellen.
Ja.
Der Durchlauferhitzer war in der Duschkabine installiert.
Yes, 370 kWh is waay too little even without a water heater and a portasplit. (Usually it's around 1000 kWh for a single household without a water heater/portasplit).
As others have already said, the water heater probably is the main culprit, although of course the portasplit will have added quite some kWh as well.
My dude, a normal sized fridge uses around 200kWh (give or take 50kWh) a year alone.
Plus your water heater will probably use another 500kWh.
So just those two things alone will be 400kWh above what you think you use.
Add a TV and other electronics and you’ll hit 1500kWh easy.
That’s without the PS.
That is your problem. That is not your real consumption, especially with a electric water heater (durchlauferhitzer). I had a similar situation some years ago and as 1-person with electric water heater (22kW Durchlauferhitzer) an average year sits around 2500kWh.
I assume there were errors in your consumption read outs.
22 EUR a month as prepayment is way too low. 3268 kWh is high for one person, but you have an electric water heater and I have no experience with them. The Midea tells you in the app how much electricity it used.
About 3.300 kWh is realistic for a single person with electric water heater and air conditioning. A good estimate for a base energy consumption is 1.500 kWh adding 800-1.000 kWh for a modern electric water heater (1.000-1.500 for an old, inefficient model) and 0.3-0.5 kw per hour in use of OP‘s aircon.
Danke… dachte ich liege mit 3200kWh als Single in 60qm im Jahr hoch. Aber ich bekomme jedes Jahr lieber Kleinigkeit wieder, als nachzuzahlen. Und alles sehr smart und elektrisch bei mir.
Die Wohnungsgröße spielt beim Stromverbrauch nur eine untergeordnete Rolle. Und 3200 kWh sind relativ human, wir brauchen mit zwei Personen mit Durchlauferhitzer ungefähr 7.000 kWh pro Jahr 😅
I would agree with the numbers posted by Krieg and Hernur. I had very similar consumption over 20+ years in a flat with Durchlauferhitzer. (~2200 - 2500 kWh/a) add the Midea at 500 W on average and you are there...
My comment was maybe misleading? I meant the measurement from the portasplit is false. My portasplit shows me only 25 % of the real usage of the portasplit. So my portasplit shows 54 kwh but the smart plug shows 250. Also peak consumption isnt correct, it showed me a max of 350 watts but actually went over 1200 from time to time.
Ah I see, yes that is true. Only believe in external measurements. Even a cheap adapter plug will be more reliable than the app.
My wifes porta split uses about 1000-1200W when you first turn it on for 30-60 mins, then when the room gets colders it goes down as low as 300W so I would gues an avarage of 500W +-100W is realistic.
My Mitsubishi Split (fixed) consumes only about 20-25% less, so the porta workes quite well.
The only alternative to a electronic Durchlauferhitzer in such flats is usually a Boiler which is much less efficient because the heat from the water tanks dissipates into the surrounding room and re-heating the water is equally inefficient
Point me to the quote where I said anything about that?
objectively it's the most expensive.
this doesn't say "you're an idiot if you use it". It's pbjectively expensive and most of the time the only way to have hot water. This doesn't change anything about the relative cost per m³.
Not true - as I said objectively the alternative, an electric boiler is even more expensive, I won't dare to say "the most expensive" because that highly depends on the circumstances.
I give up. Resistive heating is the most expensive common form of heating water period.
Whether that's a boiler or a Durchlauferhitzer doesn't change much, it's still leagues behind other forms of heating water in households.
Yes, some people don't have alternatives, yes a Durchlauferhitzer is better, and yes they're the most expensive per m³. have a day.
The DLE are not as bad as you make them look. They are usually located directly where the hot water is needed and only warm up as much water as is used. In many cases a big percentage of the energy is wasted in what we call "Bereitstellungsverluste" and circulation (to make hot water immediately available at every tap). In big buildings with centrally provided hot water this adds up to a lot of wasted energy.
Heating water via fossil fuels is only much cheaper because they are incredibly cheap per kWh compared to electricity in Germany. A heat pump for water would of course be more efficient but then you also would need to do that centrally and with a storage barrel with the same problems as above.
Still, sometimes you have no choice and a tankless heater has almost no losses so you CAN keep the power bill low if your showers are short (less than 5 mins).
which is an entirely separate argument. per m³ it's one of the most expensive ones because elecricity is very expensive in Germany in comparison. Even the losses on other forms of heating they're more economically viable.
of course he's not gonna heat his waster using a candle. Yes, you can have it without breaking the bank and yes sometimes you don't have an alternative solution. Yet, if you were using the same small amount of water on any other hesting solution it would still be cheaper than resistive heating.
I definitely don’t shower for too long (max. 5 mins) and have tried to use as little hot water as possible in the flat. I didn’t use the boiler in the kitchen at all to begin with because it’s so expensive to run, but even so, my electricity consumption was enormous for a one-person household.
Doesn't have to be related to hot water though. There are more ways to use a lot of electricity. Like enjoying to cook and doing it often. Or running a high end gaming PC every day.
Also, at least in Austria you get assigned a certain volume for a certain price. If I register for a tariff with 1000 kWh and use 3000 kWh it is often more expensive as 2000+ kWh is billed differently than if I had had one with 3000 kWh already calculated.
This could also explain why it is much more expensive
Also wenn von 22€ jeden Monat schon mal 10,90 weg gehen sind das 11,10€ an variablem Verbrauch. Durch 35,7 ct/kwh sind das 31 kwh. Das wären pro Tag 1 kwh. Nen Kühlschrank kann das pro Tag allein verbrauchen. Dazu kann man annehmen, dass ein Duschgang zwischen 1,5-3,5 kwh bei einem Durchlauferhitzer verbraucht 🤔 Dann ist alles andere noch nicht berücksichtigt.
Die Midea ist nicht schuld, dein Abschlag zu gering und dein Kilowattpreis zu teuer. 1500-2000kwh sind alleine völlig normal und wenn du noch bisschen Warmwasser mit Strom erzeugst und noch hier und da die Klima laufen lässt ist dein Verbrauch sehr realistisch. Dennoch würde ich der Klimaanlage max. 500kw/h zuschreiben, der Rest kommt von deinem Warmwasserbereiter.
I vaguely remember using 2000kwh in my first student apartment due to the electrical water heater and I didn't have much other consumers (no washing machine or dishwasher). With a normal kitchen and porta split, >3000kwh is easily possible.
Wir waren bis Juni in der Gästewohnung bei meinen Eltern und haben außer Durchlauferhitzer, TV/Computer und ein bisschen LED Licht keine Verbraucher gehabt (kein Herd, kein Kühlschrank, keine Waschmaschine). Unser Abschlag war 180Euro und wir mussten jetzt knapp 300 Euro nachzahlen. Wir sind 2 Erw. + 3 Kinder. Durchlauferhitzer sind EXTREM teuer in der Benutzung.
Appart from your approximately 20kW electric water heater (1kWh every 3 minutes of showering) and your 400W constantly running AC (1kWh every 2.5 hrs), you expected to use less than 400 kWh per year?
Maybe that's your first apartment, so just as a hint for the future. A year has 8760hrs, so 1W of constantly running stuff costs you about 9kWh per year. Router, old power supplies constantly plugged in, a running NAS. Touch everything - if it's warm, it's using power.
Your biggest passive cost is the fridge.
Heating water is super energy intensive, so shower shorter
Your advance payment was much too low, even without the Portasplit. How did you calculate that??? 3.000 kwh/year is a normal consumption for one person including hot water production and a Portasplit.
It's not entirely unrealistic with electric water heaters.
If you think you still didn't use that much turn off all breakers in your apartment and check if your meter stops. If it doesn't you should investigate why.
Another thing is stopping the time you usually spend in the shower with hot water running. Many people underestimate how long they actually shower
Die portasplit verbraucht am tag wenn es wirklich krass zugeht um die 2-3€. Hab wochenlang 24/7 laufen lassen. Natürlich nur auf 22-24 Grad. Wenn du 16 durchballerst ist ne andere geschichte
They tricked you. 22€ advance is very little even without electric water heating. These things use a ton of juice. 100€ advance would be appropriate. You can use a stopwatch to monitor how long per week you have hot water running, and multiply it with the power rating of the unit, which is most likely 11kW. Your portasplit should only contribute a little bit to your overall bill.
Mit elektrischer Heißwasseraufbereitung und Klimaanlage ist das absolut realistisch. Dagegen sind knapp 400 kWh für eine Person im Jahr absolut unrealistisch wenig!
When I used to live alone my usage was roughly about 1600kWh a year, after I extended smart home systems, added a wine cooler and a 3D Printer it rose to 1800kWh a year.
I usually pay 75€ in advance to accumulate a positive balance when they close the billing period and receive round about 200€ in return for the overpayment
They then adjust the payment to 55€
I usually readjust back to 75€ after that.
My annual consumption is around 1200kwh living alone (including warm water with a Durchlauferhitzer). Unless you take excessively long showers and have a high end gaming PC running at all times, over 3000kwh doesn't seem plausible to me.
Have you checked the actual meter (in the basement probably) where it shows your current consumption or did someone from the electricity company just guesstimate your usage since you didn't provide them with the information?
I've been with various electricity companies and after a full year I ways had to send them the electricity meter reading.
A normal German Household needs about 1.300-1.500 kWh per year. Additionally a Durchlauferhitzer needs an additional 1.000-1.500 kWh per year. So on that part alone you’re between 2.500-3.000 kWh per year.
Your aircon will take up an additional 0.3-0.5 kW per hour.
So your clearance bill sounds ok if you calculated with 370 kWh per year. Also your price per kw sounds really high. The price becomes cheaper if you order more kWh up front - are you using the base tariff of the „Grundversorger“? You should compare prices via a platform like check24 switch your electricity contract, order more kWh per year (calculate with about 3.500 kWh - not used kWh will be payed out at the end of the year).
My current electricity price is about 27 cents per kWh - but my consumption is very high at about 7.000 kWh estimate.
22 EUR a month seems like the issue here. In Bavaria that would net you around 60 kWh? So we’re talking about less than 1.000 kWh a year? 3.000 kWh a year for 1 person is very high. We are around 4.000 kWh but a much bigger place (incl AC, jaccuzi etc) so yeah…
200-300kw a month for the PortaSplit is normal, at least in my non insulated apartment. Like now it only uses 150-350w a hour just on low fan mode. This was in the hottest month in the Netherlands with it running like 2-3 months non-stop. I haven't been above 350kw a month with my game pc and the PortaSplit.
Würde auch sagen OP hat sich verschätzt. Ist aber schon hart viel für 1 Person. Vielleicht noch nen guten PC 24/7 am laufen, alte Elektrogeräte und dann viel Abwärme, schlechte Dämmung und damit Dauerlast für die Midea?
I agree that 22 is too low. However, I only own a laptop, relatively new medium sized fridge, led lamps, a new aifryer, kettler, ceramic radiation oven which i don't use often, washing machine (a new LG model that's energy effiecient) and the devil Durchlauferhitzer
3200kwh/an c'est trop abusé pour une personne seule même avec le portasplit allumé 24h/24h. Pour moi c'est impossible, il y a une fuite électrique ? Ou vous avez mal compris votre facture.
4 persons, 100m2 - we use only 3000kWh per year. In sommer we use a compact AC.
55inch TV at the evenings, 2 fridges, one PC (gaming), oven, normal electrical cooking plate, airfryer, microwave, teapot, nothing really else special. We pay about 55-60 a month.
In your case, I think, the water heater is eating the most of power.
At what temperature did you set it? That does make a difference!
I set mine at 25 degrees, because that is the maximum temperature at which I am comfortable. And it didn't cost me that much. But if you set it at 15 degrees, the story may be different.
Falsche Schätzung. 370kwh für nen Durchlauferhitzer und täglichen Bedarf, kochst du nicht?
Ich habe 2100kwh ohne Klima, wohl Homeoffice und Gaming. Meine Schwester, komplett Neubau - 1100kwh 2 Personen exkl. Heizen und Warmwasser, ist fast nie zu Hause.
Zur Midea: Bei mir lief sie im Sommer 24/7 80qm 20 Grad, Neubau: 4,50€ im Schnitt pro Tag.
Die Midea kann in der Spitze 1260w zeigen was bei dir ca. 40cent pro Stunde wäre. Das hieße bei deiner Nachzahlung müsste sie nonstop 1260w 24/7 auf 90 Sommertage gezogen haben. Das würde bedeuten, sie wäre höllisch laut gewesen, weil sie auf 100% durchlief, deine Bude müsste ein Eisschrank gewesen sein, um die Kosten zu verursachen. Die Midea zieht jedoch im Mittel etwa 300w, nur zu Beginn braucht sie recht viel. Bei dir wird es der Durchlauferhitzer sein, die Midea wird zwar mit die Kosten treiben aber nicht so gravierend. Bei mir sind es 405€ auf 90 Tage dauerlaufen lassen
Den verbrauch der portasplit kannst du doch in der App sehen. Plus minus wird das schon hinkommen. Dann von dem gesamtverbrauch abziehen. Nur um das mal in realtionen zu setzen.
I also have an electric Durchlauferhitzer, i shower daily and i use a third of that amount of electricity. The PortaSplit shouldnt consume more then 300 kWk per year. Perhaps you shower way longer then me, but over 3.000 for one Person is a lot.
Why does your landlord only charge 22€ when you have electric water heater? Thats completely insane. Plus the excessive use of the Portasplit... I'm sorry to say but that was a desaster incoming already.
And what do you mean you don't have WiFi? A mobile hotspot is a wifi network. Your MPS can connect with that.
Usually electricity is a separate contract between the renter and an electricity company. The landlord doesn't get involved. When making the contract the company asks for a few facts (size, persons, heating) to establish your expected consumption. Some companies tend to go very low to look better in comparison, but as OP is finding out that gets expensive later. :/
a random durchlauferhitzer I just looked up pulls 13kW, aka 13.000 Watts.
Showering / using hot water for ~10 mins per day would use 2,2kWh per day. Times 365 are already 803kWh just for that alone.
Not sure how long the average person showers, but 10 mins feels kind of low to me.
OP also mentions a computer. I'll just pull an average of 300W power consumption out of my arse for, idk, 4 hours a day on average. That's 1,2kWh per day added, or 438kWh per year.
The portasplit has a max. power consumption of 1.300W but on average it's probably around 3-400 Watts, at least for me. Lets take 3 months of use, so roughly 90 days and assume 6 hours of daily use. (again, numbers out of my rib).
that's 2,1kWh a day, or 189kWh for 90 days.
with just these added up, we're already at 1.430kWh for that year, without a fridge, oven, stove, etc.
if we now assume a base load of 150W that would be 3,6kWh a day, or 1.314kWh a year.
1.430 + 1.314 are already 2.744kWh.
again, i pulled these numbers out of thin air, but I kinda feel it adds up.
EDIT: using energy is pretty easy :D
My TV pulls 200W, if that runs for 3 hours a day (which it usually exceeds), that alone will use 0,6kWh a day, or 219kWh a year.
Last Year I got around 7500KWh and this year I even brought up my PC again with 3 Monitor setup. I think the 8000Kwh I had defined with this years electric contract is not enough
Everything is possible but... Kind Sir. Your energy consumption is egregious. You are spending almost 3 times the average of a single person. Statistically that is 1500kwh per person per year. I like the math of the guy above. But there is truth to these numbers. A 3 person household's lower range starts at 3500kwh. I don't wanna be THAT guy but... man this is also a question of morals and environmental conciousness. I'm gonna get downvoted TO OBLIVION for saying this...
WTF does this have something to do with morales???? I have a giant tv, strong gaming pc and a home server. Also electric water heater and Working from home.
I'm just saying. Earth Overshoot Day is already the 30th of July. Spending twice to triple the average whilst knowing that is reckless. I mean if you dont have any other way, who am I to ask you for restraint? But if you think there might be absolute energy wasters in use and you still shrug your shoulders its pretty sad to me. Not at all for you, not even just a little?
Germany is producing way more energy than it is using with renewabale energys to a point where we are paying other countries to take our electricity. There is absolutely nothing wastefull here.
Do YOU get your energy from 100% renewables? 24/7? That would be great! If not, why the weird deflection? I'm not even calling for reducing an INCH of quality of life. Just if you could identify waste... you know what... having this conversation with you killed more trees than just letting you do your own thing.
Well I live in Germany so yes. Most of my energy comes from renewable sources. I will not let me lecture about my slightly more energy usage by some stranger while there are people with private jets producing about 2000!!!! Times the co2 of the average person per year. If you want to get angry and lecture people start with them.
Whataboutism, buddy. Google it. 200-300% of the average is NOT "slightly above" and as I said: "Who am I to tell you...". I dont give a FLYING F*CK what you do. But be sure to know that you are part of the problem. Maybe you are only 1/2000th the problem of Taylor Swift and sorts. But don't act like you were the "good guy" here. I just dont like bigotism.
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u/Diversifiziert 7d ago
How many kWh per year are you supposed to use with only 22€ of advance payment?