What Size Generator For 30 Amp RV Air Conditioner?

RV air conditioners are one of the most power-hungry appliances in an RV, so it’s important to choose the right size generator to power it. If you don’t have enough power, your air conditioner won’t work properly, and you could end up with a hot and uncomfortable RV. But how do you know what size generator you need for a 30 Amp RV Air Conditioner?

The answer depends on a few factors, including the size of your AC unit, the other appliances you want to run, and the voltage of your RV. In general, you’ll need a generator that is at least 3,000 watts to run a 30-amp RV air conditioner. So, if you only plan on using your air conditioner, you could get away with a smaller generator. However, if you plan on using other appliances like a microwave or TV, you’ll need a larger generator.

A good rule of thumb is to choose a generator that is at least 20% larger than the total power draw of your appliances. This gives you some room for flexibility in case you need to use more power than initially planned.

How to Calculate Generator Size

To calculate the size generator you need, you’ll need to know the wattage of the appliances you want to run. You can find this information in the owner’s manual for each appliance. Once you know the wattage of each appliance, add them up to get the total wattage.

If you’re not sure what the wattage of an appliance is, you can look it up online. For example, a typical 13,500 BTU RV air conditioner uses about 3,000 watts.

Once you have the total wattage of your desired appliances, add 20% to account for surge wattage. Surge wattage represents the extra power an appliance requires when starting up.

In short, the formula for calculating the size of the generator you need is:

Generator Size (Watts) = Air Conditioner Wattage + 20%

For example, if your total wattage is 3,000 watts, you’ll need a generator that is at least 3,600 watts.

Choose the Perfect Generator for Your 30-amp RV Air Conditioner

In general, you’ll need a generator that’s at least 3,000 watts to power a 30-amp RV air conditioner. However, if you have a larger RV or plan on using other appliances, you may need a larger generator.

Here’s a quick guide to help you choose the right size generator for your RV:

  • 30 amp RV with a 13,500 BTU air conditioner: You’ll need a 3,000-watt generator.
  • 30 amp RV with a 15,000 BTU air conditioner: You’ll need a 3,500-watt generator.
  • 30 amp RV with a 17,500 BTU air conditioner: You’ll need a 4,000-watt generator.

These guidelines are a good starting point, but consulting your RV owner’s manual is the best way to make a well-informed decision.

Once you’ve chosen the right size generator, you’ll need to decide where to store it. If you have a large RV, you may be able to store the generator inside. However, if you have a smaller RV, you’ll need to store the generator outside.

If you’re storing the generator outside, you’ll need to make sure it’s in a well-ventilated area. You’ll also need to protect the generator from the elements.

Once you’ve stored the generator, you’ll need to learn how to operate it. Most generators are relatively easy to use, but it’s important to read the owner’s manual carefully before you start using it.

With a little planning, you can easily find the right size generator for your RV air conditioner. And with a little practice, you’ll be able to operate your generator safely and efficiently.

It’s important to note that this is just a general guideline. The actual size generator you need may vary depending on the other appliances you plan to use while your air conditioner is running.

Find Out More: What Size Generator To Run 13,500 Btu Air Conditioner?

Here are some additional tips for choosing a generator for your RV:

  • Consider the type of fuel you want to use. Generators can run on gasoline, propane, or diesel. Each type of fuel has its own advantages and disadvantages.
  • Consider the noise level of the generator. Generators can be noisy, so you’ll want to choose one that’s quiet enough to not disturb you or your neighbors.
  • Consider the weight of the generator. Generators can be heavy, so you’ll need to choose one that’s easy to move around.
  • Consider the price of the generator. Generators can range in price from a few hundred dollars to several thousand dollars.

With so many factors to consider, choosing a generator can be a daunting task. But by following these tips, you can find the right generator for your needs and budget.

Wrap Up

In conclusion, choosing the right size generator for your RV air conditioner is important to ensure that your air conditioner will work properly. The size of your AC unit and the voltage of your RV are the most important factors to consider. In general, you will need a generator that is at least 3,000 watts to run a 30-amp RV air conditioner.

However, if you plan on using other appliances like a microwave or TV, you will need a larger generator. A good rule of thumb is to choose a generator that is at least 20% larger than the total power draw of your appliances. A reliable, well-suited generator will ensure your RV adventures remain comfortable, especially during the hot summer months.

Find Out More: What Size Generator For 30-Amp RV?


Frequently Asked Questions

Can I run my 30-amp RV air conditioner on a 2,000-watt generator?

No, a 2,000-watt generator may not effectively power a 30-amp RV air conditioner. A minimum of 3,000 watts is generally recommended for a 30-amp RV air conditioner.

Do I always need to consider surge wattage when choosing a generator?

Yes, surge wattage represents the additional power an appliance needs when starting up. Always factor in an additional 20% of your calculated total wattage to account for this.

What size generator do I need for my RV air conditioner?

The size of the generator you need will depend on the size of your air conditioner and the other appliances you plan to use. In general, you will need a generator that is at least 3,000 watts to run a 30-amp RV air conditioner. However, if you plan on using other appliances like a microwave or TV, you will need a larger generator. A good rule of thumb is to choose a generator that is at least 20% larger than the total power draw of your appliances.

Can I use a smaller generator for my 30-amp RV air conditioner?

It is not recommended to use a generator with a smaller power output than the recommended size. Air conditioners require a significant amount of power to start up, and using an undersized generator may result in the air conditioner not starting or causing the generator to overload, potentially damaging both the generator and the air conditioner.

Is it necessary to consider the altitude when choosing a generator for my 30-amp RV air conditioner?

Yes, altitude can affect the performance of a generator. As you go higher in elevation, the air becomes thinner, which can reduce the power output of the generator. If you frequently camp at higher altitudes, it’s advisable to choose a generator with a slightly higher power output to compensate for the reduced performance at higher elevations.


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