Let’s say that you have a 1.5-ton air conditioner. You what to know how much you will have to pay to run such an AC unit. In the article, we will help you figure out how many watts does a 1.5-ton AC unit and how you can calculate the running costs. Further on, you will also find a neat **1.5-ton AC Running Cost Calculator** and a **1.5-ton AC Running Cost Per Hour, Day, Week, Month Chart** for *1, 2, 3, 4, and 5-star AC units*.

Running a 1.5-ton AC can cost anywhere between **$0.12 and $0.18 per hour** or **$29.38 to $44.07 per month** *(more about that in the chart below)*.

To figure out exactly what is the running cost of 1.5 ton AC per hour, you will have to determine to know only two things:

**Wattage.**Wattage helps you calculate the power consumption of 1.5 ton AC unit. How to figure out the wattage? You can check the label on your AC unit, or calculate the wattage from the EER rating.*Example:*On average, 3- star portable and window 1.5 ton have an EER rating of about 9. That means that such AC units have a wattage of**2,000W**when running at 100% cooling output. A more efficient 5-star 1.5 ton AC have an EER rating of about 11. At 100% output, it will run on about**1,6000 watts**.**Cost Of Electricity (Per kWh).**From wattage, you can calculate how much electricity (measured in kWh) your 1.5-ton AC consumes. If you want to figure out how much it costs to run a 1.5-ton AC per hour, you have to multiply the kilowatt-hours spent by its price.*Example:*In the USA, the national price of electricity is $0.1319. That means running a 3-star non-inverter 1.5-ton AC at 100% output will cost about $0.26 per hour.

Now, the key thing to remember here is that we don’t run an air conditioner at 100% output all the time. If we take the presumption used for SEER rating calculation (Seasonal Energy Efficiency Ratio), the **average output of air conditioners is 58%**. ISEER or Indian SEER is calculated in much the same way.

That means that a 3-star 1.5-ton AC has a maximum wattage of about 2,000W (at 100% output). However, when we calculate the running cost, we have to use the average wattage which is closer to 1,160W (at 58% output). This is the difference between the maximum and running wattage of 1.5-ton AC units.

Here is how we will address the power consumption of 1.5-ton AC:

- First, we will look at how to estimate
**how much does it cost to run a 1.5-ton AC unit per hour**. We will do this calculation by hand. **1.5-ton AC Running Cost Calculator.**This is a calculator that calculates how much you will pay for running a 1.5-ton AC to run it per 1 hour, per day (24 hours), per week (168 hours), per month, and so on. You just insert the price of electricity in your area ($/kWh) and the number of hours you want to run the AC.**1.5-ton AC Running Cost Chart.**We list all units – from the most inefficient 1-star units to the most efficient 5-star units – and their running costs per hour, day, week, and month.

Let’s start with a calculation:

## How Much Is A 1.5-Ton AC Power Consumption?

Let’s take as an example a 3-star 1.5-ton AC. It has a max. wattage of about 2,000W. How do we come from 2,000W to how much it will cost to run it for an hour?

First, we have to calculate the average running wattage. Here we presume that a 1.5-ton AC runs on 58% cooling output:

**Running Wattage (1.5-ton 3-star)** = 2,000W × 0.58 = **1,160W**

That means that running such a 1.5-ton AC will use 1.16 kWh per hour. To figure out how much that costs, we need to multiply the kWh spent by the price of electricity. Here we take the US average of $0.1319/kWh electricity cost to calculate that:

**Running Cost Per Hour (1.5-ton 3-star)** = 1.16 kWh × $0.1319/kWh = $**0.153/hour**

As we can see, an average 3-star 1.5-ton AC unit will cost about $0.153 to run for 1 hour. If we run it for a whole day (24 hours), we just multiply this number by 24:

**Running Cost Per Day (1.5-ton 3-star)** = $0.153/hour × 24 hours = **$3.67/day**

You can use this principle to calculate the running cost of any 1.5-ton AC unit. The key info you will need is how many watts does a 1.5-ton AC run on. Here is a shortlist that roughly estimates the maximum and running wattage of 1 – 5 star AC units:

1.5 Ton AC Star Rating: |
Maximum Wattage (Est.): |

1-Star 1.5 Ton AC | 2,400 Watts |

2-Star 1.5 Ton AC | 2,200 Watts |

3-Star 1.5 Ton AC | 2,000 Watts |

4-Star 1.5 Ton AC | 1,800 Watts |

5-Star 1.5 Ton AC | 1,600 Watts |

Using these wattages, we can automatically estimate the running cost of 1.5 AC using this calculator:

## 1.5-ton AC Running Cost Calculator

Just insert the star rating, the price of electricity in your area, and how many hours you want to run your 1.5-ton AC. The calculator will tell you how much you will have to pay for the electricity:

*Example:* Let’s say you want to know how power much does a 1.5-ton inverter AC power consumes per hour. These inverter units usually have a 5-star rating.

In the calculator above, choose a ‘5-Star’ unit, slide the second slides to match the electricity cost in your area, and set the third slider (running hours) to ‘1’. You can see that the power consumption of a 1.5-ton inverter AC is about $0.12 per hour (presuming US national average electricity prices).

To help you out, we have made some calculations about how much it costs to run a 1.5-ton AC per hour, day, week, and month and gathered them in this chart:

## 1.5-ton AC Running Cost Per Hour, Day, Week, Month Chart

In all of these calculations, we presume that you use an air conditioner for 8 hours per day (not 24 hours) and US national electricity cost. Here are the running cost for 1.5-ton units:

Running Time: |
1-Star 1.5 Ton AC |
2-Star 1.5 Ton AC |
3-Star 1.5 Ton AC |
4-Star 1.5 Ton AC |
5-Star 1.5 Ton AC |

Per Hour: |
$0.18 Per Hour | $0.17 Per Hour | $0.15 Per Hour | $0.14 Per Hour | $0.12 Per Hour |

Per Day (8h): |
$1.47 Per Day | $1.35 Per Day | $1.22 Per Day | $1.10 Per Day | $0.98 Per Day |

Per Week (56h): |
$10.28 Per Week | $9.43 Per Week | $8.57 Per Week | $7.71 Per Week | $6.85 Per Week |

Per Month (240h): |
$44.07 Per Month | $40.39 Per Month | $36.72 Per Month | $33.05 Per Month | $29.38 Per Month |

From this table, you can easily figure out 1.5 ton 3-star AC power consumption, 5-star AC power consumption, and all that. You have calculated the costs of running these units on an hourly, daily, weekly, and monthly basis.

Hope all of this helps.

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Thanks for the information and enlightenment