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

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In many cases, civilization are interested in how many amps go a 5,000 BTU waiting conditioner use. The course, you likewise have 6,000, 8,000, 12,000, 15,000, and also 18,000 BTU gadgets that use more amps 보다 5,000 BTU units.

Here is a table of how plenty of amps do various sizes of air conditioners (in BTU) draw. Below the table, friend will uncover what factors determine the number of amps needed and how you can calculate how many amps your air conditioner uses.

Table of Contents

Table: How plenty of Amps execute Window, Portable, Mini-Split Air conditioners DrawHow To calculation The variety of Amps An wait Conditioner Needs?Advice On purchase Cost-Effective waiting Conditioners

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

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

From the table above, it’s obvious that home window and portable air conditioners can draw anywhere from 3.52 amps to nearly 20 amps.

Let’s put those number in an air conditioner amperage chart:

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


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

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

Example 2: How many amps go a 12,000 BTU mini-split use? We deserve to see from the wait conditioner amperage chart the it draws around 13 A.

Example 3: 18,000 BTU unit paint, etc a little less 보다 20 A.

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

Usually, we dimension air conditioners based on capacity (measure in british Thermal systems or BTU because that short). You can see how the size of AC devices is calculation based mostly on square clip here.

If we want to know how plenty of amps go an AC draw, we have to calculate in two steps:

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

To achieve this, we can use the adhering to two equations:

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

EER is Energy-Efficiency Rating that 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. This numbers are also used to calculate the Amps intervals in the table above).

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

The power of any kind of electrical maker is calculate by multiplying voltage with amperage. A great majority that AC devices up come 15,000 BTU room powered by 115V voltage. Hence, if we recognize P (Power in Watts, i beg your pardon we have calculated with Equation 1), we have the right to calculate how numerous amps an waiting conditioner requirements by merging the 2 equations, together such:

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

Example 1: 5,000 BTU home window AC with EER 10

Let’s take a tiny 5,000 BTU unit with EER 10. We likewise know the the electric potential in the outlet is 115V. Right here is how we calculation the amps required to strength the unit:

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

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

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

The most efficient portable air conditioner have the right to reach an EER rating the 12 or also more. Because that this example, let’s take it a 10,000 BTU portable AC through EER 12 and powered by 115. Here’s exactly how we can calculate how countless amps such 10,000 BTU air conditioner draws:

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

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

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

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

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

You can inspect out an example of a generator must power a 5,000 BTU air conditioner here.

Special Example: Battery-Powered waiting Conditioners have Much higher Draw far-reaching Amperes

One the the smallest and also most practically AC units space battery-powered ones. The limitation of the batteries are evident – they can’t develop a high electrical potential. That’s why us don’t deal with 115V. Rather, the battery-powered wait conditioners use a parallel link to produce 24V.

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

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

Advice On buying Cost-Effective air Conditioners

In short, you always want come invest in an wait conditioner through a greater EER rating. As we’ve checked out by comparing example 1 and also Example 2, a greater EER rating can significantly reduce the electricity usage of an wait conditioner.

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If you have a question around how many amps her air conditioner draw, you can check the specification sheet or provide us the specs in the comment below, and also we’ll try to assist you number it out.