Written The AC's power consumption depends on its star ratingListed below is the BEE star rating chartThe EER is calculated by the following formulaEER= amount of heat removed in W/ power consumed in WEvery 1 ton of cooling power (commonly known as heat removed by a 1 ton AC in one hour) is also expressed as 3516 wattsHence 1.0 ton AC will be rated at at least 3516 WattsA 5 star AC will have a EER of at least 3.5 according to BEE guidelinesHence input power wattage = Heat removed (watts) / 3.5Hence input wattage rating = 3516/3.5 = 1005 watts (5 star rating)Ratings for various Star ratings1 star - 1302 Watts2 star - 1212 Watts3 star - 1134 Watts4 star - 1065 WattsThus if 5 star split ac with 1 tons cooling capacity is rated for 3516 Watts, it will consume 1005 watts per hour1000 watts per hour is one unit of power consumedThus the AC will consume 1.005 units per hourBut compressor runs only 70 percent of the time during normal use. Hence adjusted power consumption will be 0.7 units per hourFour 8 hours usage per day it will consume 5.6 units (Approximately)On a monthly basis it will consume around 168 units (5 Star 1 ton AC)You can apply the above calculation for any AC - but only for non inverter compressorsCool...

Be the coolest !!!Written There is no definitive answer as it depends on a lot of variable factors. Indoor - outdoor temperature differential, kind of insulation of walls, number of windows and glass / curtains, outdoor humidity, number of people in the room, how often the door/s to the room are opened just to name a few. You can consider the figures quoted by the manufacturer as conservative as the minimum.Written Approximately 1200 watt of electricity.so accordingly multiplying it with your running hour you can calculate total units .Written Ranges from 0.99 (5 star) to 1.47 (1 Star) Units per Hour, with different specifications.Written A 1.5 ton ac generally uses 1.5 to 2 kW for its operation, which means upto 2 units per hour if operated continously. But within a 10 hour period it would consume much less than the predictable value of 20 units (2 units*10 hours). This is because the compressor is not ON all the time. The Compressor runs and does the cooling to specified levels and then turns off until the temperature drops again.

so taking the duty as 70%. it would consume 10 to 14 units in the given scenario. Kindly note that the actual power consumption is dependent many other factors like Usage Mode, Temperature Settings, Maintenance of the Unit.Written now as asked,first check your ac ratings.as your ac is 1.5 ton then it consume 1499 w/hr.you house voltage is 240v.then current taken by ac is 1499/240=6.25A.and as different tariff u will be charged 5/6/7/8 rupey per unit as per your residential.Written The AC's power consumption depends on its star ratingListed below is the BEE star rating chartThe EER is calculated by the following formulaEER= amount of heat removed in W/ power consumed in WFor a 1 ton ACEvery 1 ton of cooling power (commonly known as heat removed by a 1 ton AC in one hour) is also expressed as 3516 wattsHence 1.0 ton AC will be rated at at least 3516 WattsA 5 star AC will have a EER price of an hvac unitof at least 3.5 according to BEE guidelinesHence input power wattage = Heat removed (watts) / 3.5Hence input wattage rating = 3516/3.5 = 1005 wattsFor a 0.75 ton ACThus if 5 star split ac with 0.75 tons cooling capacity will be rated for 2837 watts and it will consume 754 watts per hour1000 watts per hour is one unit of power consumedThus the AC will consume .754 units per hourBut compressor runs only 70 percent of the time during normal use. thru wall hvac units

Hence adjusted power consumption will be 0.527 units per hourFour 8 hours usage per day it will consume 4.22 units (Approximately)On a monthly basis it will consume around 127 unitsYou can apply the above calculation for any AC - but only for non inverter compressorsFor various star ratings consumption for 1 ton will beCool... The requested URL /services.php?id=3 was not found on this server. I have an AC unit with the following specs: Cooling Capacity: 1260 kcal/h, 1.47kW, 5000 Btu/hac unit fan motor cost Fan Motor Power: 0.034 kW My question is how much power does this unit actually consume in an hour? Does it use 1.47kW constantly? Btw it's a York unit. Is that a good brand? It will only draw that level of power when the compressor is running. In normal circumstances it will cycle on and off to chill the cooling element as needed; the rest of the time only the fan will be running to blow air over them.

The amount of power consumed will vary depending primarily on how hot it is and what temperature you have the AC set to. To find out how much power it's actually using, you'll need to use a power meter of some sort. I'm partial to the Kill-a-Watt if they're available where you live. You do not have enough information to calculate the electrical power consumed during operation. The three quantities listed, 1260 kcal/hr, 1.47 kW and 5000 BTU/hr, all represent the same power level, simply given in different units. They all give, as stated, the cooling capacity: the rate of heat energy removal from the cooled space. A particular air-conditioner has a dimensionless number called the Coefficient of Performance. It is defined as the ratio of Energy Removed to Energy Consumed. This value, usually around 4 to 8, divided into your cooling capacity (preferably in kW), will give the electrical power consumption of the unit when running... Another possibility: Turn off most of the appliances in your house, especially anything that cycles, like your refrigerator.

Go to your electric meter and figure out how much power your house is using. The procedure for this varies between meters, but if you call your power company, they might be able to tell you how to do it. Turn on your A/C, let it run for a few minutes, and again figure out how much power your house is using. Subtract one from the other to get the power consumption of your A/C. Add together the kW from Cooling Capacity and the Fan Motor. 1.47 + .034 = 1.504 kw or 1504 w. It appears that this is for a 220 v circuit ( 34w / .155A = 220v based on the fan rating). So your total draw would be 1504/220 = 6.84 A.Browse other questions tagged electrical hvac air-conditioning or ask your own question.Air conditioners have evolved a lot over the years. The models produced in the year 2000 used 30 to 50 percent less energy than the ones that were manufactured in 1970s. Nowadays, the newer models are designed with better energy efficiency features. Before going into the details about the energy consumed by air conditioners, it is essential to know how the device works.

Air conditioners work on the same principle as a refrigerator, where circuit of pipes and a pump form the cooling system. The room is cooled by the indoor cold evaporator coil, and the hot coil expels the heat outside the rooms. The cost of running an AC depends on various factors like: Energy Consumption of Air Conditioner Presently, AC models with 1 to 5 energy star rating are available in the market. A 5-star model saves maximum energy, and the 1-star rated model consumes more electricity. A regular AC used for residential purpose has a 5,500 - 14, 000 BTU/hour range. If the climate is hot, it is recommended to purchase an AC with higher start rating. The ratings are awarded by BEE (Bureau of Energy-Efficiency). The electricity charges are based on the units of consumption (1 unit = 1 kWh) For example: 10 numbers of 100 W bulbs when switched on for 10 hours will consume: Similarly, An AC with 2,000 Watt power input if operated for about 8 hours per day will consume:

Energy Efficiency Ratio for AC: You can lower the energy consumption by following these simple steps: Use Portable or Window Units: If you are not cooling the entire house, then use a portable AC to cool only the area where the cooling is required. They use 50% less energy as compared to a centralized air unit to cool the same space. It is advisable to go for a programmable thermostat. This helps you to switch the AC on and off as per the program set by you. It avoids excessive utilization of power and saves almost 15 percent on electricity bills. Although your air conditioner requires only basic maintenance, it should be kept clean and free from dust, particularly if you live in areas where there is a lot of pollution.  The seeds or pollen may stick to the air filters, which will make the device work harder, thereby decreasing the energy efficiency. Make sure that the space in your house, where the ducts run through without air conditioning are properly insulated.