The electrical existing (measured in Amperes or ‘amps‘ for short) required to operation an air conditioner is straight proportional to exactly how much the AC unit will affect your power bill.

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In many cases, human being are interested in how countless amps go a 5,000 BTU wait conditioner use. The course, you additionally have 6,000, 8,000, 12,000, 15,000, and also 18,000 BTU devices that use an ext amps than 5,000 BTU units.

Here is a table the how countless amps do various sizes the air air conditioning (in BTU) draw. Below the table, you will discover what determinants determine the number of amps needed and how you deserve to calculate how many amps your air conditioner uses.


Table of Contents


Table: How numerous Amps carry out Window, Portable, Mini-Split Air air conditioning DrawHow To calculate The variety of Amps An wait Conditioner Needs?Advice On to buy Cost-Effective wait Conditioners

Table: How numerous Amps execute Window, Portable, Mini-Split Air conditioners Draw

Air Conditioner CapacityAmperage (Estimate)AC Type:
How numerous amps does a 5,000 BTU waiting conditioner use?3.62 – 5.43 AmpsWindow AC
How many amps walk a 6,000 BTU wait conditioner use?4.35 – 6.52 AmpsWindow AC
How numerous amps go an 8,000 BTU wait conditioner use?5.80 – 8.70 AmpsWindow AC, Portable AC
How numerous amps go a 10,000 BTU waiting conditioner use?7.25 – 10.87 AmpsWindow AC, Portable AC
How plenty of amps go a 12,000 BTU waiting conditioner use?8.70 – 13.04 AmpsWindow AC, Portable AC, Mini-Split air Conditioner
How many amps does a 15,000 BTU wait conditioner use?10.87 – 16.30 AmpsWindow AC, Portable AC
How numerous amps go an 18,000 BTU waiting conditioner use?13.04 – 19.57 AmpsWindow AC, Portable AC, Mini-Split AC

From the table above, it’s apparent that window and portable air air conditioning can attract anywhere indigenous 3.52 amps to almost 20 amps.

Let’s put those numbers in an waiting conditioner amperage chart:

Air Conditioner Amperage chart (From 5,000 BTU come 18,000 BTU)

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On the amperage chart above, we have actually charted the maximum estimated amps, an AC unit of 5,000 – 18,000 BTU is approximated to draw.

Example 1: You have the right to see that the 5,000 BTU unit (be it window AC or portable AC) draws a bit more than 5 A.

Example 2: How many amps go a 12,000 BTU mini-split use? We can see indigenous the waiting conditioner amperage chart that it draws about 13 A.

Example 3: 18,000 BTU unit color etc a small less 보다 20 A.

How To calculate The number of Amps An air Conditioner Needs?

Usually, we size air conditioners based upon capacity (measure in brother Thermal devices or BTU for short). You deserve to see exactly how the size of AC systems is calculate based mainly on square footage here.

If we desire to understand how many amps walk an AC draw, we need to calculate in two steps:

From BTU to electric power (measured in Watts).From watt to electrical existing (measured in Amps).

To achieve this, we deserve to use the complying with two equations:

Air conditioner capacity (BTU) = EER/P (in Watts) (Equation 1)

EER is Energy-Efficiency Rating that you deserve to usually uncover in specification sheets of 5,000-18,000 BTU AC units. On average, EER ranges from 8 to 12. This numbers are likewise used to calculation the Amps intervals in the table above).

P (in Watts) = V (in Volts) * ns (in Amps) (Equation 2)

The strength of any type of electrical an equipment is calculated by multiplying voltage through amperage. A great majority that AC systems up come 15,000 BTU are powered by 115V voltage. Hence, if we understand P (Power in Watts, i m sorry we have actually calculated through Equation 1), we deserve to calculate how many amps an air conditioner needs by merger the 2 equations, together such:

I (in Amps) = air conditioner capacity (BTU) / (EER x V (in Volts)

Example 1: 5,000 BTU window AC through EER 10

Let’s take a little 5,000 BTU unit v EER 10. We additionally know the the electric potential in the outlet is 115V. Below is exactly how we calculate the amps compelled to power the unit:

I (in Amps) = 5,000 BTU / (10 x 115V) = 4.35 Amps

The higher the energy-efficiency the the waiting conditioner, the fewer amps it will certainly draw. Hence, we’ll pay less for electricity and also still get the 5,000 BTU that cooling power. The most energy-efficient home window air units have actually an EER rating above 11. Girlfriend can check out the best window AC systems here.

Example 2: 10,000 BTU Portable wait Conditioner through EER 12

The most effective portable air conditioner have the right to reach an EER rating the 12 or even more. Because that this example, let’s take it a 10,000 BTU portable AC through EER 12 and powered through 115. Here’s just how we deserve to calculate how plenty of amps such 10,000 BTU air conditioner draws:

I (in Amps) = 10,000 BTU / (12 x 115V) = 7.25 Amps

We watch that this AC unit supplies 7.25 amps to provide 10,000 BTU the cooling power. Comparatively, the 5,000 BTU AC unit from instance 1 it is intended 5,000 BTU the cooling power making use of 4.35 amps.

The higher energy-efficiency machine from example 2 (12 EER) it is provided 100% much more cooling power than the 5,000 BTU maker from example 1 (10 EER).

However, it doesn’t attract 100% much more amps. In fact, the draws 67% an ext amps to achieve a 100% much more powerful cooling effect. It is thus more cost-effective.

The only difference is the energy efficiency rating (EER).

You can check out an instance of a generator need to power a 5,000 BTU waiting conditioner here.

Special Example: Battery-Powered wait Conditioners have actually Much greater Draw far-reaching Amperes

One the the smallest and most practically AC units space battery-powered ones. The limitation that the batteries are evident – they can’t create a high electric potential. That’s why we don’t address 115V. Rather, the battery-powered waiting conditioners usage a parallel connection to develop 24V.

The best battery-powered unit – the Zero Breeze mark 2 – can provide 2,300 BTU of cooling power with just 24V electric potential.

That method it demands 27 amps to power the entirety AC unit. That is, in comparison, greater amperage than it’s needed to strength an 18,000 BTU portable wait conditioner (about 13-19 amps).

Advice On to buy Cost-Effective wait Conditioners

In short, you always want to invest in an air conditioner through a higher EER rating. As we’ve viewed by comparing example 1 and Example 2, a higher EER rating can considerably reduce the electricity usage of an wait conditioner.

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If you have a question about how plenty of amps her air conditioner draw, you can check the specification sheet or offer us the specs in the comment below, and also we’ll shot to help you number it out.