HomeTips and TricksHow Much Power Will A 1 Ton DC Inverter Consume

How Much Power Will A 1 Ton DC Inverter Consume

What is DC Inverter

The Inverter technology (DC) is the latest evolution of technology concerning the electro motors of the compressors.The DC Inverter units have a variable-frequency drive that comprises an adjustable electrical inverter to control the speed of the electromotor, which means the compressor and the cooling / heating output. The drive converts the incoming AC current to DC and then through a modulation in an electrical inverter produces current of desired frequency. A microcontroller can sample each ambient air temperature and adjust accordingly the speed of the compressor. The inverter air conditioning units have increased efficiency in contraction to traditional air conditioners, extended life of their parts and the sharp fluctuations in the load are eliminated. This makes the inverter AC units quieter, with lower operating cost and with less broke downs. The inverter AC units might be more expensive than the constant speed air conditioners, but this is balanced by lower energy bills. The payback time is approximately two years depending on the usage.

Inverter AC consumes powers in the following pattern

  1. On startup it will consume Highest possible power for 45 minutes to an hour till the room reaches set temperature
    1. Thus a 1 ton ac rated at 900 watts may consume up to 20 percent more power in initial 30 minutes or so
    2. The 900 watts 1 ton AC may cool at 1.2 tons capacity
  2. Then the AC will function at lower wattage and thus consume much lesser power to just maintain set temperature.

The amount of power an inverter based air conditioner consumes depends on the temperature you set it to..

The lower the temperature higher the power consumption.

Disclaimer: The below values are based on the brands and non branded inverter ACs I have tested over past. The place where I live has an ambient temperature of 35–40 in summers accompanied by rain and humidity.

For example if you have set it to 16 C it will consume 220Volts 6–7 Amperes ( 1.32Kw-1.5kw)

You run it for 5 hours daily for whole month you will have 190–225 units added in utility bill

If you set it to 25C it will start with >0Amps and slowing rise up to 1.32Kw-1.5kw then upon reaching 25c (which is easier to achieve in a closed room) it will drop down to 1.6–3 Amperes (300W-660W)

If you run it in above condition every day for 5 hours, you will have 45–105 units added to your bill

Multiply the units by your utility per unit cost and taxes and this is what it is going to cost you.

Straight 75% + savings are expected provided you run it efficiently and as required.

  • Maintenance and cleaning

    • The power efficiency of the AC depends on how it is maintained
    • Ensure that ac is serviced at least once every 4 months
    • Clean Indoor unit filters in split AC once a fortnight or once a month depending on usage
    • Do not use ac when you suspect something is wrong. Ensure that you repair the AC or get it inspected by a professional moment as soon as you feel something is not right (Water leakage, Icing of tubes)
    • Even in cooler weather ensure that you run the AC at least once every fortnight for 20 minutes
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