The electrical current (measured in Amperes or ‘amps‘ because that short) essential to operation an wait conditioner is straight proportional to exactly how much the AC unit will affect your electrical power bill.

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In many cases, human being are interested in how many amps does a 5,000 BTU wait conditioner use. Of course, you likewise have 6,000, 8,000, 12,000, 15,000, and also 18,000 BTU gadgets that use an ext amps 보다 5,000 BTU units.

Here is a table the how numerous amps do various sizes that air air conditioning (in BTU) draw. Listed below the table, girlfriend will uncover what factors determine the variety of amps needed and also how you deserve to calculate how many amps your air conditioner uses.

Table that Contents

Table: How countless Amps perform Window, Portable, Mini-Split Air air conditioning DrawHow To calculate The number of Amps An air Conditioner Needs?Advice On buying Cost-Effective waiting Conditioners

Table: How numerous Amps do Window, Portable, Mini-Split Air air conditioning Draw

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

From the table above, it’s evident that window and portable air air conditioning can attract anywhere native 3.52 amps to nearly 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)


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

Example 1: You can 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 does a 12,000 BTU mini-split use? We deserve to see from the waiting conditioner amperage chart that it draws about 13 A.

Example 3: 18,000 BTU unit draws a little less than 20 A.

How To calculate The variety of Amps An waiting Conditioner Needs?

Usually, we dimension air conditioners based on capacity (measure in brother Thermal systems or BTU for short). You can see exactly how the size of AC devices is calculate based generally on square clip here.

If we desire to understand how plenty of amps does an AC draw, we have to calculate in two steps:

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

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

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

EER is Energy-Efficiency Rating the you have the right to usually uncover in specification sheets the 5,000-18,000 BTU AC units. On average, EER arrays from 8 to 12. These numbers are additionally used to calculate the Amps intervals in the table above).

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

The strength of any kind of electrical maker is calculated by multiplying voltage with amperage. A an excellent majority that AC units up come 15,000 BTU room powered by 115V voltage. Hence, if we understand P (Power in Watts, which we have actually calculated v Equation 1), we can calculate how numerous amps an waiting conditioner demands by merger the two equations, together such:

I (in Amps) = waiting conditioner volume (BTU) / (EER x V (in Volts)

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

Let’s take it a small 5,000 BTU unit with EER 10. We additionally know that the electrical potential in the outlet is 115V. Below is exactly how we calculation the amps required to strength the unit:

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

The greater the energy-efficiency that the wait conditioner, the fewer amps it will certainly draw. Hence, we’ll pay much less for electricity and also still acquire the 5,000 BTU that cooling power. The most energy-efficient window air units have an EER rating over 11. You can check out the best window AC units here.

Example 2: 10,000 BTU Portable air Conditioner with EER 12

The most reliable portable air conditioner can reach one EER rating that 12 or even more. For this example, let’s take a 10,000 BTU portable AC through EER 12 and also powered through 115. Here’s exactly how we can calculate how countless amps such 10,000 BTU waiting conditioner draws:

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

We see that this AC unit offers 7.25 amps to deliver 10,000 BTU that cooling power. Comparatively, the 5,000 BTU AC unit from instance 1 it is provided 5,000 BTU that cooling power using 4.35 amps.

The greater energy-efficiency an equipment from instance 2 (12 EER) it is provided 100% an ext cooling power than the 5,000 BTU machine from instance 1 (10 EER).

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

The only distinction is the energy performance rating (EER).

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

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

One that the smallest and also most convenient AC units are battery-powered ones. The limitation that the battery are noticeable – they can’t develop a high electrical potential. That’s why we don’t deal with 115V. Rather, the battery-powered waiting conditioners use a parallel link to develop 24V.

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

That method it requirements 27 amps to power the totality AC unit. The is, in comparison, higher amperage than it’s required to strength an 18,000 BTU portable waiting conditioner (about 13-19 amps).

Advice On purchase Cost-Effective waiting Conditioners

In short, you always want come invest in an waiting conditioner v a higher EER rating. As we’ve seen by comparing example 1 and also Example 2, a higher EER rating can substantially reduce the electricity intake of an air conditioner.

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If you have actually a question around how numerous amps your air conditioner draw, girlfriend can inspect the specification sheet or offer us the specs in the comment below, and also we’ll shot to help you figure it out.