About power consumption of household appliances

The issue of energy savings is always relevant. Electricity rates are soaring, and ordinary citizens concerned about energy consumption of household appliances. It is important to know the value of the nominal power of electrical devices. It will help to save your money. Examine all existing in your home electrical appliances, and you will see a plaque with a brief factory specifications, including power.


The power indicated by a letter “P”, and the watt or kilowatt units are designated as kW or W. In 1 kW there is 1000 watts, however, the same value may be indicated in different ways, for example 1500 W or 1.5 kW, which is basically the same.

Table of power consumption of typical household appliances

Name of home appliances Power, kWt The duration of a day, hours Consumable electricity per day, kWh
Boiler (50-200 liters) 2 4 8
Hob 1-2 1 2
waffle-iron 1-2 0.5 1
Built-in Oven 2-5 1 5
Kitchen hoods 0.25 1 0.25
Iron 2-3 0.5 1.5
Computer with monitor and amplifier with speakers 0,4-1 6 6
Air conditioning 1-3 5 15
Coffee Machine 0.5-1.2 0.3 0.36
Microwave 0.8-2 0.3 1
Kitchen Mixer 0.2 0.2 0.04
Dishwasher 3.5 1 3.5
Instantaneous water heater 3,5-5 1.5 7
A vacuum cleaner 1 0.5 0.5
Electric sauna, single-phase connection 3,5-5 0.8 4
Electric sauna, three-phase connection 4,5-17 0.8 10
Pressure-cooker 1-2 0.5 1
Solarium 2,5-4 0.3 1.2
Automatic washing machine 2-3,5 1.5 5
Dryer 2-3,5 0.5 1.75
A laptop 0.5 6 3
Toaster 0.9-1.6 0.2 0.32
Humidifier 0.1 5 0.5
Hairdryer 0,8-1 0.2 0.2
Electric chip 1,6-2 0.4 0.8
Fridge 0.2-0.4 3 1.2
Refrigerator with freezer 0.4-0.8 3 2.4
Electric grill 0.8-3.5 0.5 1.75
Electric range 3,3-8 1 8
Compressor 0,75-2,8
Water pump 0,55-0,9
Electric circular saw 1.8-2.1
Electric motors, household 0,55-3
Household fans 0,75-1,7
Electric mower 0,75-2,5
High-pressure pump (type Karcher) 2-2,9
Electric drill 0.4-0.8
Drill 0.6-1.4
Electrosharpener 0.3-1.1
Air Dryer 0.35 5 1.75
Plasma TV 0.3-0.4 5 0.2
Blender 0.3 0.2 0.06
Freezer 0.3-0.6 3 1.8
LCD TV (LCD) 0.2-0.3 5 1.5
Game console 0.2 2 0.4
TV with a cathode-ray tube 0.2-0.3 5 1.5
Monitor 0.15-0.2 6 0.12
DVD-player 0,017 2 0,034
Satellite antenna 0,015 5 0,045
Video recorder 0,011 2 0,022
Radio-clocks 0.01 24 0.24
A portable stereo system (boom box) 0,007 6 0,042
Charging for mobile phone 0,004 2 0,008
Wireless phone 0,001 24 0,024

Please note that this data may help you to calculate the total energy consumption of household appliances in your apartment or house for a day, week, month. After completing even a rough calculation, which will evaluate the full picture of energy consumption of household appliances, you can take a decision on the possible ways of saving electricity. For example, if the main consumers of electricity is heater or boiler, you will be advisable to move to multi-tariff electricity metering, especially if all your family members work or study during the day. Modern boilers fueled by electricity, are equipped with thermostats and programmers, with which you can create the algorithm of work in the most economical mode: day – standby mode and from 23-00 to 07-00 a full heating mode.

Norms of energy consumption of household appliances (are shown in this article) is the starting point of a long way to saving energy.

Nominal and maximum power consumption

As you know, electrical appliances have their own power, which is reflected in the attached technical documentation or passport of the equipment. Usually a nominal or maximum power is specified in such documentation, but in practice this value is often slightly higher than actually power consumption. For example, the average power of the computer is 0.4 kW, rather it is a power of a supply unit, but it does not mean that in an hour of the computer work will cost 0.4 kW/h of electricity. Most likely, this figure will be at least one-third lower, as a lot depends on what applications are running and how much CPU load – graphics applications use more resources and economical “sleep” mode doesn’t load power supply.

All appliances is divided into large and small household appliances, depending on this, also varies and electric power consumption, ie, their power. For large household appliances usually referred refrigerators, air conditioners, washing machines, dishwashers, cookers, etc. Hairdryer, kettle, blender, toaster, electric razor, etc are included to a small household appliances.

Seasonal electricity consumption


Consumption of appliances largely depends on seasonality due to the need to use a specific climate and other household units. For example, if you have an autonomous electric heating in your apartment or house your consumption in winter will be significantly higher than during summer period.

In addition to the winter jumps, the total power consumption of household appliances may increase in summer. This is due to a number of factors, for example, only in the summer we can use air conditioning all day. For such units the power consumption of cooling and heating mode is separately indicated in technical documentation.

In addition to air conditioning, such a large household appliances such as refrigerators and freezers, will also affect the total consumption. If the temperature in the kitchen in the winter time can vary between 16-18 ° C, it can reach 25 ° C or higher in the summer. Depending on the ambient temperature the consumption of the refrigerating appliances may increase in summer. Although it has insulated casing, but when the opening / closing the warmer air penetrate into the chamber, so more energy is required for cooling. Also, due to seasonal fluctuations of temperature a higher level of cooling is exhibited in refrigerators for the summer, consequently the compressor is activated frequently, which entails costs of kilowatts of electricity. On average the power consumption during the summer is 20% higher than in winter.

Calculation the power consumption of energy by appliance

If you just want to check yourself and understand how much do appliances consume, there are two ways: first – look at the equipment passport, or second – turn off all consumers, except one, the power of which you want to know. In order to know the power (kw/hour) it is not necessary to turn-on every device on an hour. On the electronic meter you can watch how much watts were used during 5 minutes of the work of the device. This value you have to multiply by 12. So you’ll get the hour consumption.

You should take into account that almost all household appliances do not work continuously, refrigerator and air conditioner don’t consume electricity always, when they reach the desired temperature, they are switched off and go into standby mode, until the temperature rises above the set. Also, this statement is true for lighting lamps, it is unlikely that someone who reads this article, has lighting equipment working around the clock, often they are used only in the evening or night.

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