How Many Watts Does A 5 Ton Air Conditioner Use-How Do I Calculate

5 ton AC is a big unit and it generates enormous power as well. Surprisingly, when you have this type of big AC at your home, that means, you can put it for the 3k square feet area. 

So, the question comes up- how many Watts does A 5 ton Air Conditioner use? The answer is 6000W and below in this article we will explain how does it, so read between the lines. 

How Many Watts Does A 5 Ton Air Conditioner Use

How Many Watts Does A 5 Ton Air Conditioner Use

The general rule of thumb is- a 1 ton AC uses 1200 watts. So, a 5 ton AC requires 6000 Watts of electricity to run efficiently. 

Typically, it’s challenging to figure out the exact size of a generator to operate a 5-ton air conditioner. The best bait is- you should discover the overall wattage of the AC. Luckily, you can easily find the wattage by following the three simple steps. 

Firstly, take a look at the specification sheet for power.

Secondly, find the EER rating from the specification sheet. Once you figure out the EER rating, just divide the BTUs output of your AC by EER rating. 

In this way, you can easily bring out the overall wattage of the AC. For example, A 5-ton Ac provides 60000 BTUs. 

And the EER rating of it is 12. So, the overall wattage will be ‘60000/12’= 5000. On the other hand, if the EER rating is 10, the wattage will be 6000. 

Thirdly, find the Amps and voltage from the specification sheet. Now, use this formula- ‘amps * volts= wattage’ to know the wattage. 

Generally, a 5-ton AC uses 25 Amps at 240V. So, the overall wattage you need for operating a 5-ton AC is 6000W (25*240). 

Keep in mind; we only fetch the running load of your 5-ton AC. The starting load for the 5-ton AC will be different. 

However, if you want to know the exact wattage your 5-ton AC uses, you need to dig more. You need to find the LRA rating of the unit. 

Every air conditioner has a startup inrush current. It means it has a spike in current draw when it first turns on. You can easily read the inrush current by having a clamp on the meter. 

You can find hard start and soft start kits to modify the startup behavior of air conditioners, specific for generator scenarios you want soft start to reduce the startup current. 

The startup current is a value, which will influence the peak rating of the generator. Most generators are rated in kilowatts. They have two ratings, one for continuous and another for peak. 

However, we don’t want to make things harder for you. Just get the Westinghouse WGen6000 generator as it can provide up to 7500W of power. You can easily run your 5-ton AC with it without worrying about the startup current. 

5 Ton AC Unit Electrical Requirements

Every 5-ton AC unit will have its own set of electrical requirements: from a specific number of receptacles to necessary wiring and circuits.

Each unit’s required voltage and amperage, as well as its power factor, must be taken into consideration when planning your electrical structure.

Moreover, consider whether the plot area can handle harsh weather conditions and safely support the load of a 5-ton AC system alongside all of its associated electrical wiring needs.

Understanding your home or business’s electrical requirements is an essential part towards successfully installing a 5-ton AC system so be sure to consult with an electrician early on in the process to make sure you are safe and up to code.

How many amps does a 3.5 ton ac use?

A 3 ton AC generally uses 7.5 to even 12.3 amps. However, to calculate this, you need to keep a few things in mind. So, when you calculate the amps of your AC, you first need to the BTU of the AC. 

A general rule: 1 ton is always equivalent to 12,000 BTU.

So, if you simply multiply 12,000 BTU with 3.5 tons (12,000 x 3.5), you’ll get 42,000 BTU. After you are done with this, the rest of the calculation is pretty elementary. 

Now, all you need is to calculate the watt. To do this, you need to divide the BTU (the one you calculated before) by the AC SEER. This is how you’ll get the watt of the 3.5 ton AC. 

So, you know the “watt” and the “voltage.” Now, all you need to do is multiply these two numbers to attain the amps of your 3.5 ton AC.

What size line set for 2 ton ac?

The line size (suction line) is also an important part of an AC. However, most of us are not entirely sure about which size to pick for 2 ton AC. 

There are a few setbacks while choosing the size line set for your AC. For instance, if the line size is too large, the pressure within the line would be pretty low, and vice versa. 

So, to get the desired and optimum pressure for your 2 ton AC, you need the exact size that’ll do the job for you. The size line set you would need for this is 3/8“ and 5/8“ OD.

This is the perfect size for your 2 ton AC as it’ll provide the optimum suction and pressure to make your AC operate smoothly without any issues on the way. 


It is evident that there are a variety of electrical requirements and installations to consider when installing an AC unit. From the Watts needed for 5 Ton AC Units, to the Amp requirements for 3.5 Ton AC units and line set size for 2 ton units, it is important to install your air conditioner correctly to achieve maximum efficiency. Tackling these detailed specifications can feel daunting, however with diligent research and a few well-placed tips, you can confidently tackle any installation project or home improvement task.

Furthermore, when in doubt, it’s better to consult professional assistance so as not to risk any potential injury or damage as a result of incorrect installation practices. The bottom line: make sure you take the time to get the facts before you purchase and install your air conditioner properly—and never skip out on seeking professional assistance if needed!

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