The electrical present (measured in Amperes or ‘amps‘ for short) needed to operation an air conditioner is directly proportional to just how much the AC unit will influence your electrical energy bill.

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

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

Table the Contents

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

Table: How plenty of Amps carry out Window, Portable, Mini-Split Air air conditioning Draw

Air Conditioner CapacityAmperage (Estimate)AC Type:
How numerous amps walk a 5,000 BTU wait conditioner use?3.62 – 5.43 AmpsWindow AC
How numerous amps does a 6,000 BTU waiting conditioner use?4.35 – 6.52 AmpsWindow AC
How plenty of amps does an 8,000 BTU air conditioner use?5.80 – 8.70 AmpsWindow AC, Portable AC
How numerous amps does a 10,000 BTU wait conditioner use?7.25 – 10.87 AmpsWindow AC, Portable AC
How numerous amps walk a 12,000 BTU air conditioner use?8.70 – 13.04 AmpsWindow AC, Portable AC, Mini-Split air Conditioner
How numerous amps does a 15,000 BTU air conditioner use?10.87 – 16.30 AmpsWindow AC, Portable AC
How many amps go an 18,000 BTU air 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 conditioners can draw anywhere from 3.52 amps to virtually 20 amps.

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

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


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

Example 1: You deserve to see the the 5,000 BTU unit (be it window AC or portable AC) draws a bit an ext than 5 A.

Example 2: How plenty of amps does a 12,000 BTU mini-split use? We deserve to see native the waiting conditioner amperage chart that it draws about 13 A.

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

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

Usually, we dimension air conditioners based upon capacity (measure in british Thermal systems or BTU because that short). You have the right to see how the dimension of AC units is calculate based mostly on square clip here.

If we want to recognize how many amps does an AC draw, we need to calculate in two steps:

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

To attain 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 have the right to usually find in specification sheets that 5,000-18,000 BTU AC units. Top top average, EER arrays from 8 come 12. This numbers are likewise 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 electrical maker is calculate by multiplying voltage through amperage. A an excellent majority of AC units up come 15,000 BTU space powered by 115V voltage. Hence, if we recognize P (Power in Watts, i m sorry we have actually calculated with Equation 1), we can calculate how numerous amps an air conditioner needs by merging the 2 equations, together such:

I (in Amps) = air conditioner volume (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 with EER 10. We additionally know that the electrical potential in the outlet is 115V. Below is how we calculation the amps compelled to power the unit:

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

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

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

The most reliable portable wait conditioner can reach one EER rating of 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 just how we can calculate how plenty of amps together 10,000 BTU waiting conditioner draws:

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

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

The higher energy-efficiency machine from instance 2 (12 EER) delivers 100% more cooling power 보다 the 5,000 BTU maker from instance 1 (10 EER).

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

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

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

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

One the the smallest and also most practically AC units space battery-powered ones. The limitation that the batteries are obvious – lock can’t develop a high electrical potential. That’s why us don’t resolve 115V. Rather, the battery-powered air conditioners use a parallel link to create 24V.

The finest battery-powered unit – the Zero Breeze note 2 – can supply 2,300 BTU of cooling strength with simply 24V electric potential.

That means it needs 27 amps to strength the whole AC unit. The is, in comparison, higher amperage than it’s essential to power an 18,000 BTU portable wait conditioner (about 13-19 amps).

Advice On to buy Cost-Effective waiting Conditioners

In short, you constantly want to invest in an waiting conditioner with a higher EER rating. Together we’ve watched by comparing example 1 and Example 2, a greater EER rating can substantially reduce the electricity intake of an air conditioner.

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If you have a question around how countless amps your air conditioner draw, friend can examine the specification paper or provide us the specs in the comments below, and also we’ll try to assist you figure it out.