To keep the RV Air Conditioner working, adequate power back up is as essential as oxygen to breathe. Since the recreational vehicles come in different sizes and capacities, the peaceful tourists could have a meticulous eye on the RV air conditioner watts – the built-in aggregate capacity of the RV gen-set.  

Electricity is the most essential and valuable invention; It also has been a primary power resource for improving human life, not just for the scientific and medical sector but also for modern convenience. The circle of higher innovative living is not restricted, particularly when it comes to the realm of camping. 

Since we understand the benefits of technology, the power generators are best used to their total capacity.

Which generator runs which RV air conditioner!

It is highly imperative to embark upon the generator size for camper and RV air conditioner watts. Since the motorhomes, pop up campers and travel trailers come in different sizes and capacities, the requirement of a power generator to run air conditioners in these RVs differs.

Usually, a generator of 3000 to 4000 watts works best for an average recreational vehicle. This capacity is sufficient to run all other appliances of your camper in addition to the air conditioner of 14000 BTU. Following specialised generators to power air conditioners of campers are popular amongst the tourists in UK, Europe, Australia and the United States.

See these requirements while buying a power generator for an RV air conditioner

  • Quiet and noise-free
  • Ease of operating
  • Capacitated to run at least 15000 BTU air conditioner
  • Affordable pricing
  • Dual fuel mechanism
  • Easily portable
  • Non-conductor body case
  • Rust-free material

When it comes to your RV Air Conditioner, there is a range of knowledge you must be familiar with. Nothing is worse than a hot travel trailer! So what is the ideal size for a generator to run the RV Air conditioner? Which generator runs the RV air conditioner better – a gas-driven or propane driven?

What size generator do I need for my RV?

If you are wondering about “what size generator do I need to run my RV,” the appropriate answer is more convoluted than you may think. While the more stunning generators will probably be more significant than their small, powerful partners, size is no good strategy to measure out a particular unit. Accordingly, your concern should be about how much output do you need and what is the smallest and lightest generator you could find to meet the output requirements.

The portable or mobile generators for recreational vehicles are getting smarter with the passage of time. It implies it should not be too difficult to even think about discovering something that does not lift you over your cargo carrying limit.

How many watt generators to run an RV air conditioner?

A significant amount of energy is required to get a start and run an RV air conditioner. The generator needs to have around 2000-4000 watt capacity to power the regular RV air conditioner. Many factors are involved in deciding about what size RV generator will work best to run air conditioner. However, a 2000 watt generator is adequate to run your RV appliances round the clock.

Honestly, there is a significant range of generator sizes available in the market. You have to examine which one would work for your adventuring needs. Every RV air conditioner will not need a 4000-watt generator, so it is better to peep into the AC unit capacity and what is required to run it.

The best generators for your RV air conditioner

What size generator to run RV AC could serve your purpose? Hopefully, you’re feeling sure about your requirements for the generator to operate RV air conditioner! There are countless alternatives available, but considering the suitable conditions, it is most likely for you to get at your perfect match.

Quietest Choice: Generac 7127 iQ3500-3500 Watt Portable Inverter Generator

The Generac 7127 is a strong generator equipped for driving machines and recreational vehicles. It generates and dispenses power up to 3500 watts. It can power your smaller AC unit as well as other appliances. People also recommend an average running time of around 8 hours on one tank of gas. That sounds proficient!


  • Many outlets 
  • Compact structure
  • Noise-free
  • Digital display


  • A bit higher price
  • No wheels to assist with weight 
  • Unable to power larger RV AC units

Best Dual Fuel Choice: DuroMax XP4400EH Dual Fuel Electric Start Portable Generator

Looking for a generator that can burn both propane and gas? Check out DuroMax XP4400EH. With a tag of attractive price, electric start, and wheels for convenient portability, this little generator might be what you need for your RV air conditioner.


  • Dual power option
  • Larger wattage limit
  • Mid-range cost
  • Wheels and handle for easy transportability


  • Louder than other generators
  • Not as many plug alternatives
  • Can power only AC, not other RV appliances

Best Budget Option: WEN 56475 4750-Watt Portable Generator

This is a comparatively cheaper high-tech power generator capacitated to run an RV air conditioner. WEN 56475 might be the ideal decision for idyllic camper lovers. This little generator comes in as the most affordable price plan, which does not mean you get less energy either! It flaunts a massive 4750-watt startup and 3750 watts RV generator running rate. That ought to be sufficient power for most RV air conditioners, and you might have cash left over to boot!


  • Affordable price
  • Larger wattage capacity 
  • Wheels for easy movement 
  • Longer run time 


  • Not many plug options 
  • Larger unit

Best for Fuel Economy: Champion 4000-Watt RV Ready DH Series

Champion is yet another best option on the list of RV generators. Champion 4000 Watt generator is here to expand your fuel utilization. This smart generator can deal with a 4000-watt startup and afterwards keep everything running on 3500 watts, which should mean your AC unit is covered! It additionally claims to be about 17 hours on a solitary tank of fuel so that you can continue to enjoy your camping trip for longer.


  • Larger wattage capacity 
  • Fuel efficient
  • Quieter unit 
  • Many plug choices 


  • Costlier
  • Difficult portability
  • Manual startup 

Best for BIG Watt Capacity: Westinghouse WGen6000 Portable Generator

Searching for some ideal generator for your motorhome AC? First, you must have an idea about how many watt generator to run RV AC is desirable for your peaceful camper ventures. The Westinghouse WGen6000 may be your ideal match. It flaunts the highest wattage limit on this list, which means your AC unit will have no difficulty running close by the entirety of your other RV appliances. It tops at 7500 watts and runs consistently at 6000!


  • Largest wattage capacity 
  • Normal size 
  • Average fuel utilization 
  • Wheels and handle for easy movement  


  • More price
  • A little louder
  • Few plug options 
  • Heaviest unit 

What power output is desirable from an RV generator?

Most RV generators come in the range of 2000 to 4000 watts of power. Do you own a smart camper with restricted power needs? A 2000-watt unit ought to be enough for you then. However, the people who want to operate the air conditioner or microwave oven will require a generator offering 3000 watts and sometimes more.

RV Air conditioner watts

Does your RV air conditioner utilize a lot of power? Many people consider whether they should leave the AC on while they are heading towards their favourite campsite. The following table elucidates RV air conditioner watts.

RV Air Conditioner SizeWatts Required for startupAverage wattage once running
7000 BTU RV AC1700600
10,000 BTU RV AC2000700
13,500 BTU RV AC27501250
15,000 BTU RV AC35001500

Class-A RVs: Class-A RVs utilize the most energy. The average draw for a Class-A RV is about 430 watts. That signifies that an hour of AC utilization will cost you about $0.27 an hour in electricity costs, or $25 each day if you are running it 12 hours every day. 

Class-C Motorhomes: These purpose-built vehicles have lower energy utilization rates at 300 to 350 watts. For example, an hour of AC utilization would just run up an extra charge of $0.18-$0.36, depending on whether it is summer or winter outside. 

Fifth Wheel RVs:  The energy utilization rates for these vehicles rely upon what type you have. Some fifth wheels use 350 and 400 watts, while others use more than 500 watts each hour when AC is running. Generally, an hour of AC utilization will cost $0.25-$0.35 in extra charges.

Will a 2000-watts generator run an RV air conditioner?

Out dry setting up camp, and it is hot! You wish you could run your AC unit to get some relief. However, you cannot because your generator is just 2000 watts. Reconsider, it is possible to run an RV AC on a 2000 watt generator. Preferably, the best size of the generator would be in the 2800 to 3000 watt to run your RV AC unit.

What is a soft start, and why do I need one? 

A regular AC draws 5 to 8 times the energy on startup than when it uses during the run. It may cause an issue in case you are utilizing a restricted measure of power available. A soft start is an electronic gadget that slopes up the capacity to an appliance; as for this situation, your RV AC unit is running at its total capacity. Soft start also decreases wear on your RV AC parts during the aggregate run time.

How do I reduce the wattage consumption in my RV?

In many RVs, it is the manufacturing standard to introduce water heaters and coolers that work on propane. You will often discover an RV that has exceptionally been altered because the original appliances failed.

You should set your RV AC on a timer to save fuel consumed by the power generator. Out of the two roof AC units, each requires 2,750 watts to start and 1,250 watts to work for an hour. In the case that the two of them were to operate at the same time, it would blow a breaker in your RV or the one on the generator. Try not to utilize many high-wattage devices at the same time. You should also avoid using other home appliances like coffee makers and microwave ovens that require more wattage than your generator can supply.

The article has typically explained numerous facts about the selection of RV generators, wattage requirements for running an RV air conditioner.