The refrigerator is the only household appliance that operates around the clock without interruptions. That is why the issue of its energy consumption worries many: from owners of modest “single-chamber” to owners of spacious Side-by-Side. In this article we will figure out how many kW per month does a refrigerator consume depending on the class, volume and operating conditions, and also learn how to calculate consumption ourselves.
You will be surprised, but the difference in costs between old and new models can reach 5–7 times - with the same volume! For example, a Soviet one “consumes” up to 100 kW/month, while a modern one with a system is only 15–18 kW. We have collected current data on popular brands ( ZIL-63 “consumes” up to 100 kW/month, while modern LG GA-B489YDQZ with the system Inverter Linear Compressor - only 15–18 kW. We have collected current data on popular brands (Atlant, Samsung, Indesit), and also prepared a checklist for those who want to save on electricity bills.
1. Energy consumption class: how it affects energy consumption
Since 2021, the EU and Russia have had an updated scale of energy efficiency classes - from A (the most economical) to G (the least efficient). Previously, there were classes A+++, A++ and A+, but they were abolished due to labeling “inflation”: almost all new models received the highest rating, which misled buyers.
Today the class A is assigned to refrigerators with an energy efficiency index (EEI) less than 55%. For example, the model Bosch KAN92VI30 (class A) consumes about 120 kWh per year, while the Samsung RB30A32N0SA (class B) consumes about 150 kWh. A difference of 30 kWh per year at a tariff of 5 rubles/kWh will result in an overpayment of 150 rubles annually.
- 🔋 Class A - up to 55% of the standard (the most economical). Example: Liebherr CNef 4815 (105 kWh/year).
- 🟢 Class B — 55–75%. Example: Atlant XM 4021-000 (130 kWh/year).
- 🟡 Class C — 75–95%. Example: Indesit DF 5200 W (170 kWh/year).
- 🔴 Class D and lower —over 95%. Found in older or budget models.
⚠️ Attention: The energy efficiency class sticker on the refrigerator indicates annual consumption in kWh. To get monthly consumption, divide this value by 12. For example, 150 kWh/year = 12.5 kW/month.
2. Real consumption by model: kW consumption table
We analyzed data from popular refrigerators from 2023–2026 and compiled a table with real indicators. Please note that actual consumption may differ by ±15% depending on room temperature, frequency of door openings and chamber load.
| Model | Class | Volume (l) | Consumption (kW/month) | Annual (kWh) |
|---|---|---|---|---|
| Samsung RB30A32N0SA | B | 311 | 12–14 | 150 |
| LG GA-B489YDQZ | A | 360 | 10–12 | 120 |
| Atlant XM 4021-000 | B | 340 | 11–13 | 135 |
| Indesit DF 5200 W | C | 320 | 14–16 | 170 |
| Beko GNE114620X | A | 290 | 9–11 | 110 |
Please note: inverter compressors (for example, in models LG or Samsung) consume 20–30% less electricity compared to conventional linear ones. This is due to smooth power control instead of cyclic on/off.
3. How to calculate the consumption of a refrigerator yourself
If your model does not have a sticker with an energy efficiency class or you doubt its reliability, you can measure the consumption manually. You will need wattmeter (a device for measuring power) or a smart socket with an electricity metering function (for example, Xiaomi Mi Smart Plug).
Calculation algorithm:
- Connect the refrigerator to the wattmeter on full day (24 hours).
- Fix consumption in kWh for this period.
- Multiply the result by 30 to get monthly consumption.
Example: The wattmeter showed 0.8 kWh per day → 0.8 × 30 = 24 kW/month. If the tariff is 5 rubles/kWh, then the cost of operating the refrigerator will be 120 rubles per month month.
What to do if there is no wattmeter?
You can use the data from the electricity meter. To do this, turn off all appliances in the house except the refrigerator and measure the consumption for 1 hour. Multiply the result by 24 (hours) and 30 (days). data-i="125">4. What does the actual energy consumption depend on
4. What determines the actual energy consumption?
The manufacturer's passport data are average indicators obtained in laboratory conditions. In reality, consumption is affected by:
- 🌡️ Room temperature. At +30°C, the refrigerator consumes 30–50% more kW than at +20°C.
- 🚪 Frequency of door openings. Each time the chamber is opened, the compressor is turned on for 5-10 minutes to restore the temperature.
- ❄️ The thickness of the ice in the freezer. Ice 5 mm thick increases flow rate by 10-15%.
- 📦 The degree of load. An empty refrigerator spends more energy cooling the air than a filled one.
- ☀️ Direct sunlight. If the refrigerator is located next to a window, its side walls heat up, which forces the compressor to work more intense.
For example, a refrigerator Atlant MXM 2835-90 in the passport has a consumption of 220 kWh/year, but when used in a kitchen with a temperature of +28°C and frequent opening of doors, actual consumption can reach 300–350 kWh/year (25–30 kW/month).
5. How many kW does a refrigerator consume in different modes
Modern refrigerators are equipped with several operating modes that affect energy consumption:
| Mode | Description | Consumption (kW/month) |
|---|---|---|
| Standard | Temperature in the refrigerator compartment +4...+5°C, in the freezer –18°C. | Basic (according to passport) |
| Eco/Vacation | Temperature in the refrigerator +10...+12°C (for long absence). | 20–30% lower than standard |
| Super freezing | Intensive cooling of the freezer to –24…–30°C (up to 72 hours). | 40–60% higher than standard |
| Fast cooling | Forced cooling of the refrigerator compartment (2-6 hours). | 25-35% higher than standard |
For example, if you turn on Vacation mode for a month, the refrigerator Samsung RB37A52N0SA instead of the standard 14 kW/month will consume only 9–10 kWBut "Super Freeze" will be expensive: the same 14 kW can turn into 20–22 kW in 30 days.
⚠️ Attention: Mode "Super Freeze"** is not intended for permanent use! Long-term operation in this mode (more than 3 days) leads to compressor overload an increase in energy consumption by 50–70%.
6. How to reduce refrigerator consumption: 7 working methods
Even if you do not have the most economical model, you can reduce energy consumption by 15-25% without buying a new refrigerator. Here are proven methods:
Set the temperature to +4°C in the refrigerator compartment and -18°C in the freezer|
Check the door seals for leaks (test with a sheet of paper)|
Defrost the freezer when the ice thickness is > 5 mm|
Do not place the refrigerator next to the stove or radiator|
Fill empty spaces with water bottles (for heat accumulation)|
Turn off the “Super Freeze” mode after use|
Clean the rear grill from dust 2 times a year -->
Pay special attention door seals. It’s easy to check their tightness: close the door by inserting a sheet of paper between the seal and the body. If the sheet is easily pulled out, the seal is worn out, and the refrigerator spends extra 5–10 kW/month to compensate for cold air leaks.
Another hidden “eater” of energy — ice in the freezer. Ice 1 cm thick increases consumption by 10–15%. Regular defrosting (every 3-6 months) will save you up to 3-5 kW/month.
7. Cost of operating a refrigerator: calculation according to tariffs 2026
To calculate how much a refrigerator costs per month, you need to know:
- Its monthly consumption (from your passport or measurements).
- Electricity tariff in your region.
Average tariffs for the population in 2026 (according to the Federal Antimonopoly Service):
- 🏠 Single tariff meter: 4.5–6 rubles/kWh (depending on the region).
- ⚡ Double tariff: 3.5–5 rub./kWh (night), 5–7 rub./kWh (day).
- 🌞 Multi-tariff: up to 8 rubles/kWh during peak hours (8:00–11:00 and 20:00–22:00).
Example of calculation for a refrigerator Indesit DF 5200 W (16 kW/month) in Moscow (tariff 6 rubles/kWh):
16 kW × 6 rub. = 96 rub./month
96 rub. × 12 months = 1,152 rubles/year
⚠️ Attention: Electricity tariffs may vary depending on the region and type of meter. Check the current prices in the supplier's personal account or on the website of the local energy sales company.
FAQ: Frequently asked questions about refrigerator consumption
How many kW per hour does the refrigerator consume?
The average power of the refrigerator is - 100–200 W/h, but it does not work constantly, but in cycles (turning on for 10–20 minutes every hour). Actual consumption per hour is 0.05–0.15 kWh. For example, the model Atlant XM 4021-000 "eats" about 0.08 kWh per hour.
Why does a new refrigerator consume more than what is indicated in the passport?
This is normal in the first 2-3 weeks: The compressor works harder to cool the empty chambers. Also check if the "Super Freeze"** mode is turned on or if the refrigerator is in a hot room. If the overconsumption persists for more than a month, there may be a thermostat defect or a freon leak.
Which refrigerator is the most economical in 2026?
According to Roskachestvo, the leaders in energy efficiency are:
- LG GA-B489YDQZ (class A, 105 kWh/year),
- Beko GNE114620X (class A, 110 kWh/year),
- Liebherr CNef 4815 (class A, 100 kWh/year).
All of them are equipped with inverter compressors and system No Frost.
Is it possible to turn off the refrigerator at night to save money?
No, this will lead to spoilage of food and increasing consumption during the day: the compressor will have to work in increased mode to restore the temperature. The exception is the modes "Vacation" or "Eco" (if they are in your model), which reduce consumption without risk to the products.
How much electricity does an old Soviet refrigerator consume?
Models like ZIL-63, Minsk-15M or Biryusa-3 consume 80–120 kWh per month (1,000–1,500 kWh per year). For comparison: a modern one of the same volume is 30–40 kW/month. Replacing an old refrigerator pays for itself in 3–5 years only due to savings on electricity. Atlant the same volume - 30–40 kW/month. Replacing an old refrigerator pays for itself in 3–5 years due to energy savings alone.