How to Run 2 AC on 30 Amp – A Complete Guide

In many scenarios, running 2 ac on an RV connected to the 30 amp is not recommended. Using the rule of thumb is that the longevity of the RV and the large size AC units are the minimum chance to run both AC on 30 Amps smoothly.

Following the latest versions of model RVs that use more power-efficient AC units running 30 Amps is possible, provided you do not connect with other energy-demanding equipment like the microwave, hair dryer, water heater, and many more. The latest versions of RVs that come with an in-built Energy Management System have no power to run both ACs on 30 Amps.

The EMS is an auto machine that manages the appliances in the RV to operate within the allocated power present in the RV. If you wish to understand how to connect, you are in the right place. I have provided you with the best content, solutions to the frequently asked questions, and finally, the conclusion of the whole article.

How to run the RV Air conditioner on 30 Amp

How to ran 2 ac on 30 amp

You can perform the work if you have the latest version of the RV or trailer. However, your Ac units must be highly advanced, and their start-up power draw should not reach the maximum point. I believe when you are done with this action, mainly on the latest versions, I assure you that you will not run any other available electronic gadgets.

Don’t be amazed because that is how the operation works. The good thing about 30-amp hook-ups is that they can supply all the available power in the system. The energy management system’s work helps you read and understand how the electricity is being consumed; however, it is still difficult to run 2 AC units and other electric gadgets during the period.

Remember, the problem comes when you add another unit. So, what is advisable you do is search for any other available sources of electricity to help meet your power demand. You have to hook the second unit to 20-amp power to meet the demands needed. Although by doing that, it changes what the manufacturer documented in its electrical design.

2 AC units on 30 Amp RV

Running 2 AC units on 3o Amp requires controllers to be wired (which is not a must) into the latest versions of RVs that will change the AC units. The first one will operate for a certain period and be switched to another by the controller. However, it is hard for them to run for the same period on 30-amp service.

The reason is that there is a lot of power consumed, and usually, the 30-amp system has enough ability to give, and I understand the exceptions to the rule very well.

 However, when planning this action, it is good to place one of the AC units on 20-amp power and connect it to the 20-amp available outlet. The activity should operate correctly, as many RV experts have preferred this way.

Another idea is to place a fan in the sitting room and allow it to offer cold air to the bedroom during the wee hours. Another idea is to hook one of the AC units to your generator, but when you want both ACs running simultaneously, use the generator.

I guarantee you that these are the best alternatives for using a 30-amp service to run 2 AC units. Do not use the generator when campground rules forbid the use.

GadgetsFunctionsAmazon products
Circuit breakerProtects the electrical circuitsCheck Amazon for the best Circuit breakers
RV Air conditionerRemoving heat from the air inside the RVCheck Amazon for the best RV Air conditioner

We were running the second AC to 30 Amp

We were running the second AC to 30 Amp

It is always not the best thing to do because 2 AC units use less than 30 amps. The issue occurs when you want to run amps and not start them. Most AC units are rated 15 amps in a run time, and adding another one indicates you are consuming all the 30 amps.

That means there will be no power for home appliances such as microwaves, heaters, etc. Adding the second unit means you plan to use them separately and not within the same period.

The power consumed during start-up runs to over 20 amps which is not recommended if you intend to run them simultaneously or if one is running.

RV AC tripping 30 Amp Breaker

Sources for this problem are many and come in different ways, and these issues are seen before you even add the second AC unit. One of the trial results is a short circuit caused by various kinds of problems, some not even coming from the AC unit.

The second issue is a weak circuit. The breaker is wearing out, and the tripping nature is not enough to use a 30-amp for tripping. So checking and inspecting the connection helps you identify the issue’s origin.

The last issue can be circuit overload, which is caused by adding another AC unit or the addition of many operating electronic devices that are on. To ensure better-rated service, the power the systems consume should not approximately be over 80 percent of the available amps.

Best 30 Amp RV Air Conditioner

That depends on yourself and how large or small your RV or trailer is. Small Ac units are small for short and more miniature RVs and too powerless compared to the larger ones. The opposite is true; larger AC units operate best in more extensive and prolonged trailers and do nothing for the small ones.

Reading the owner’s manual or documentary is good because it helps you follow the rules when choosing the correct square footage your AC is recommended and rated. That is the only method to get the best AC unit for you. Believe me or not, excellent global brands are building the best AC units. Mark my words; it is not about all brands but a few ones. I advise you to go to Panasonic, Daikin, Carrier, Coleman, Atwood, and many others.

It is advisable to research to get the best asset with fewer issues. If you want to get the most reliable air conditioner brand, visit Trane, American Standard, Bryant, and Lennox, and for durability, choose Carrier always.

Electrical need of an RV Air Conditioner

RV air conditioners use standard alternating current in most homes. RVs nowadays have only one air conditioner, and large ones have two. They are measured by their capacity for cooling, symbolized by BTU.

Dometic RV ac and Coleman RV ac are the most known models, which produce approximately 12.8 amps and 13.4 amps, respectively. They both provide enough power; however, a fault campground is enough to run an RV air conditioner.

Amps needed for an RV Air Conditioner

Amps needed for an RV Air Conditioner

The RV air conditioner is around 14 amps when working. The amps also vary depending on the size of the AC and the type of model it is. The latest versions need approximately 12 amps compared to older ones.

When you turn on an air conditioner, the RV AC amp is drawn for almost doubling the amperage, which takes less than a second. The reason is that the RV campgrounds use 30 or 50 amps and allow the surge start-up. The issue comes when the components of the RV AC have many electrical gadgets to start up at the same time.

Give an example where you connect an RV with the circuit that can manage the amperage needs of the air conditioner. However, most of the appliances were using the available power present.

Sometimes someone can activate other appliances when the ac is running, thus causing the circuit overload; in search of a scenario, the circuit breaker strips result in the termination of power to the RV.

Frequently asked questions:

  • Can someone run 2 ac on the same breaker?

If the breaker you are using is built so that it can accommodate two ACs, then the ability of you to run the second AC on an s 30-amp breaker.


Hooking up 2 AC units with the same 30-amp service is not recommended. Because there is much power consumption for it to start working or keep running, it is good to get solutions by adding a second AC unit to ensure the available electrical gadgets are running correctly in the trailer or RV.

I believe after reading the following article, you will be able to understand how you can run the 2 AC on a 30-amp. Get the available alternatives to keep the system running. If you find any difficulties, call for help from an expert to help you with any problems.

About Me

This is Cody Wingfield; I’m an author and a Freaky Campers enthusiast. My three favorite activities are Cycling, Rving, and Cooking for me. OutingX is a planet of mine where I will share my exploring history, story, freaky experiment, and personally gathered experience with you.

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