The cost of electricity is rising along with consumption during winter, so the power consumption of a heater is an important issue for each home. The decision of a real low power consumption heater is not merely a matter of selecting the lowest amount of wattage; it is a matter of determining how the amount of power, design, and time of use can be converted into the monthly bill.
In winter, households can operate a room heater or water heater several hours a day, so they are some of the largest energy consumption appliances. The need to find a low power consumption heater will reduce both the workload on the wiring and the overall cost to be spent on the same without compromising on the level of comfort when selected appropriately.
The majority of individuals just consider the wattage but the power consumption of the heater is based on the relationship.
KW = Volts x Amps/1000
Along with wattage, the design of the heaters play a crucial role in determining how fast the heat is radiated in your room, even with the same wattage due to the design heat radiation can differ. An efficient room heater of low power consumption can be made by making better use of airflow, reflectors or fin design in order to make a space feel warmer at the same wattage since it is smarter at the way heat is distributed and retained.
The design of the heater also varies the frequency of the on and off of the thermostat. Oil-filled radiator or well insulated water heater is used and it will store heat, therefore after the warm-up period they will be able to condition the heat with less duty cycles effectively lowering the average heater power consumption with time.
Understanding the power bands of room heaters help to select an appropriate low power consumption heater based on your size and climate of the space.
Fan Heaters: These heaters often have a power range of 1000-2000 W, with most having two power options: 1000 W and 2000 W. They get hot in a short time and cool rapidly upon being turned off and therefore are better used when there is a brief heating requirement in small / medium rooms.
Oil-filled Radiators (OFR): These types of heaters usually come in 800 W, 1200 W, 2000 W and a separate PTC fan. Nameplate wattage is high, but their thermal mass allows them to operate in shorter bursts once warmed up and hence comfortable and efficient in longer use in bedrooms and living rooms.
Infrared/radiant heaters: They are usually 800-1500 W and they direct heat to individuals and objects and not to the whole room. To warm someone at a desk or a sofa, an infrared heater with a power of 800-1000 W can become just as warm as a significantly larger more powerful convective heater.
PTC heaters: PTC heaters are available in small power packages (around 1000 2000 W or so) with the self-regulating ceramic element decreasing power consumption at the target temperature.
Water heaters have a higher wattage, however, they operate at lower durations than room heaters. Average domestic storage geysers come in the range of 2000-3000 W.
The power of water heaters is also essentially based on the time of use and standing losses. A water heater with the power of 3 kW operated 2 hours in a day will absorb approximately 6 kWh (6 units) of energy on a daily basis with a constant power supply. Insulated storage models will minimize the rate of reheating and hence a heavily insulated geyser can be more effective in practice than a lower powered geyser which lasts longer.
The formula of using electricity is simple:
Energy (kWh) = Power (kW)xTime (hours)
Assuming that a room heater has a power of 1500 W, then the power of the heater is 1.5 kW. The use of this heater in a day takes 4 hours.
Energy Consumption= 1.5 x 4 = 6 Kwh
So on your bill you will have 6 units; if your tariff is 8 rs per unit it would give you 48 on that day of use.
The same method could be applied to room heater power consumption or water heater power consumption:
Not all room heaters with a low power consumption will be the one with the lowest watt in print on the box. Even a very low-watt portable heater (such as 400-600 W) can not work well in a large room or a room with insulation, so you will have to run that heater many additional hours and even then you will feel cold. Rather, the intelligent thing to do is adjust the number of watts of the heater according to the size of the room, the climate and the pattern of use, and then depend on the thermostat and the design efficiency to regulate the actual amount of energy consumed over time.
Consider the wattage and thermostat range to ensure correct control, it is better to get a heater that has low/medium/high options.
Search by design: oscillation, reflector quality, the number of fins in the OFRs, and fan-assisted circulation.
In the case of water heaters, size and wattage of balance tank, and insulation; a too large geyser that is allowed to run excessively long may consume more power than a smaller one with a little higher wattage.
For the optimal low power consumption heater it is best to identify an appliance whose wattage is sensible to your room, whose design is highly efficient, and an excellent thermostat, then combine it with simple insulation and strict use.
Use the information shared on heater power consumption in kWh units to get assistance in comparing room heater power consumption and water heater power consumption. It is better to make smart wattage (enough to heat effectively) rather than strive to achieve the minimum number of watts, and regulate the number of hours and kWh by habits and controls.
