The electrical present (measured in Amperes or ‘amps‘ because that short) necessary to operation an wait conditioner is directly proportional to how much the AC unit will impact your electrical energy bill.

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In many cases, civilization are interested in how plenty of amps does 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 tools that use much more amps than 5,000 BTU units.

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

Table the Contents

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

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

Air Conditioner CapacityAmperage (Estimate)AC Type:
How many amps go a 5,000 BTU wait conditioner use?3.62 – 5.43 AmpsWindow AC
How many amps does a 6,000 BTU waiting conditioner use?4.35 – 6.52 AmpsWindow AC
How countless amps go an 8,000 BTU waiting conditioner use?5.80 – 8.70 AmpsWindow AC, Portable AC
How plenty of amps go a 10,000 BTU wait conditioner use?7.25 – 10.87 AmpsWindow AC, Portable AC
How plenty of amps walk a 12,000 BTU waiting conditioner use?8.70 – 13.04 AmpsWindow AC, Portable AC, Mini-Split air Conditioner
How many amps go a 15,000 BTU waiting conditioner use?10.87 – 16.30 AmpsWindow AC, Portable AC
How countless 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 evident that home window and portable air air conditioning can attract anywhere native 3.52 amps to almost 20 amps.

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

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


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

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

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

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

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

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

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

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

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

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

EER is Energy-Efficiency Rating the you deserve to usually find in specification sheets of 5,000-18,000 BTU AC units. On average, EER arrays from 8 come 12. These 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 strength of any type of electrical maker is calculated by multiplying voltage with amperage. A great majority that AC devices up to 15,000 BTU space powered through 115V voltage. Hence, if we know P (Power in Watts, i beg your pardon we have calculated v Equation 1), we deserve to calculate how countless amps an wait conditioner needs by merger the 2 equations, together such:

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

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

Let’s take it a small 5,000 BTU unit with EER 10. We likewise know the the electrical potential in the outlet is 115V. Here is 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 draw. Hence, we’ll pay much less for electricity and also still acquire the 5,000 BTU the cooling power. The most energy-efficient window air units have an EER rating above 11. Friend can check out the best home window AC systems here.

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

The most effective portable waiting conditioner deserve to reach one EER rating the 12 or also more. For this example, let’s take a 10,000 BTU portable AC with EER 12 and powered by 115. Here’s exactly how we can calculate how numerous amps together 10,000 BTU waiting conditioner draws:

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

We check out that this AC unit provides 7.25 amps to provide 10,000 BTU of cooling power. Comparatively, the 5,000 BTU AC unit from example 1 it is provided 5,000 BTU of cooling power utilizing 4.35 amps.

The greater energy-efficiency maker from instance 2 (12 EER) delivers 100% much more cooling power than the 5,000 BTU maker from example 1 (10 EER).

However, it doesn’t attract 100% an ext amps. In fact, the 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 performance rating (EER).

You can examine out an example of a generator have to power a 5,000 BTU wait conditioner here.

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

One of the smallest and most convenient AC units space battery-powered ones. The limitation of the battery are obvious – they can’t produce a high electric potential. That’s why us don’t address 115V. Rather, the battery-powered waiting conditioners usage a parallel connection to produce 24V.

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

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

Advice On to buy Cost-Effective waiting Conditioners

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

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