Will A 2200 Watt Generator Run An RV Air Conditioner? Everything RV Owners Need To Know

Choosing the right generator is essential for RV comfort and safety, especially when it comes to running energy-hungry appliances like air conditioners. This article explores whether a 2200-watt generator can power an RV air conditioner, outlining important considerations, practical solutions, and expert tips for seamless RV travel.

Aspect	Details
Common RV AC Unit Size	13,500–15,000 BTU
Typical Starting Wattage	2,800–3,500 watts (surge)
Typical Running Wattage	1,300–1,600 watts
2200-Watt Generator Output	2,200 max / ~1,800–2,000 running watts
Direct Compatibility	Unlikely without soft start device
Solutions	Soft start kits, smaller AC unit, parallel generators, load management

Understanding RV Air Conditioner Power Demands

Types And Sizes Of RV Air Conditioners

RV air conditioners are usually rated in British Thermal Units (BTUs). The most common models range from 13,500 BTU to 15,000 BTU. Smaller units, typically around 9,000–11,000 BTU, can be found in compact RVs or camper vans.

Wattage Requirements: Starting And Running Loads

RV air conditioners require a brief surge of extra power to start (the “starting” or “lock rotor amperage” load) and then less energy to continue running (the “running” load). For instance, a 13,500 BTU unit generally needs:

• Starting Watts: 2,800–3,000+ watts
• Running Watts: 1,300–1,600 watts

Larger 15,000 BTU models may exceed 3,200 starting watts.

What RV Owners Need To Know About 2200 Watt Generators

A 2200-watt generator is in the lightweight inverter class, known for quiet operation and portability. Typically, it’s rated for 2,200 peak (starting) watts and approximately 1,800 running watts. Popular models include the Honda EU2200i and Yamaha EF2200iS.

These generators are well-suited for small appliances, electronics, and battery charging, but their ability to support an RV air conditioner depends on several factors.

Will A 2200 Watt Generator Run Your RV Air Conditioner?

The short answer: It depends on the size and efficiency of the air conditioner, and whether you use start-assist technology.

• Without Modifications: Most 13,500 BTU and larger RV AC units will not start reliably on a standard 2200-watt generator. The starting surge exceeds the generator’s capacity.
• With Soft Start Kit: A soft start device (like Micro-Air EasyStart or Dometic SmartStart) can reduce AC startup wattage by up to 50%. With this, some 13,500 BTU ACs may run on a 2200-watt generator, especially in moderate temperatures.
• With Smaller AC Unit: If you have an 11,000 BTU AC or smaller, a 2200-watt generator may be adequate even without a soft start, though a soft start is still strongly recommended.

How Soft Start Devices Help Your Generator Power An RV AC

Soft start devices are electrical modules wired to the AC’s compressor. They gradually ramp up compressor power, cutting the one-time surge nearly in half. This innovation enables smaller generators to start and run air conditioners that would otherwise be incompatible.

• Popular Options: Micro-Air EasyStart, Dometic SmartStart
• Compatibility: Most major RV AC brands and models
• Installation: DIY-friendly, but professional installation is recommended for safety
• Result: A 2200-watt generator has a much better chance of running a 13,500 BTU AC, especially at low altitudes and moderate temps

Generator Performance Is Influenced By Altitude And Temperature

Generator output declines with altitude and high temperatures. Expect a performance drop of about 3.5% per 1,000 feet above sea level. Hot weather also reduces efficiency. If you travel at elevation or in extreme heat, a 2200-watt generator may struggle more, even with a soft start.

Managing Loads For Generator Success

• Turn off other high-watt appliances (microwave, water heater, blow dryer, coffee maker) while running the air conditioner.
• Switch AC fan mode to “low” or “auto” to reduce electrical load.
• Ensure batteries are charged before running the generator solely for the AC.
• Unplug unnecessary devices (laptops, TVs, chargers) to reserve capacity.

Effective load management enables a 2200-watt generator to focus its available power on starting and running the air conditioner.

Parallel Operation: Doubling Power Output

Some inverter generators allow you to pair two units together with a parallel kit. This method nearly doubles your available wattage, making it much easier to run an RV AC—even a 15,000 BTU unit—and still have power left for other appliances.

• Honda, Yamaha, Champion, and Predator are popular brands with parallel-capable models.
• Cost: Higher than a single generator, but avoids the bulk and weight of one large unit.
• Redundancy: If one generator fails, you still have backup power.

Best Generator And AC Combinations For RVs

RV AC Size	Starting/Running Watts	2200W Generator?	With Soft Start?
11,000 BTU	1,600/1,000	Possible	Almost Always
13,500 BTU	2,800/1,600	Unlikely	Often Possible
15,000 BTU	3,300/2,000	Not Likely	Possible, With Caution

For off-grid RVers who want total reliability, pairing two portable 2200-watt generators is the most flexible solution for powering any size RV air conditioner.

Practical Scenarios: Will Your 2200 Watt Generator Be Enough?

• Scenario 1: You have a 13,500 BTU A/C and a soft start. You turn off microwave, fridge, and other high draws—likely to work, especially at low altitude.
• Scenario 2: You have a 15,000 BTU A/C, no soft start—unlikely to work; generator will likely overload/trip.
• Scenario 3: You have an 11,000 BTU A/C, mild climate, minimal other loads—good chance of success, even without modifications.

Real-World Performance: RVers’ Experiences

RV forums and YouTube demonstrations consistently reveal that a soft start device is a game changer. Many have reported successful operation of 13,500 BTU units with a Honda EU2200i, especially after disabling eco-throttle mode (running generator at full RPM during AC start-up).

However, performance remains dependent on temperature, altitude, and load management. Some users find that on the hottest days or above 5,000 feet, even with upgrades, a single 2200-watt generator can falter.

Key Tips For Maximizing Generator Output

• Always use heavy-duty, short extension cords for maximum efficiency
• Check and replace generator air filters regularly, especially in dusty RV parks
• Run the generator on clean, fresh fuel; avoid stale gas to keep output high
• Use the generator’s reset/breaker switch if the AC causes an overload
• Allow the generator to cool and rest after long periods of use

Generator Alternatives: Solar, Shore Power, Or Larger Generators

Solar panels and battery banks generally cannot run RV air conditioners directly, unless you have an extremely large and expensive off-grid setup. Shore power at RV parks, or using a larger 3000+ watt generator, is a more reliable solution for running standard RV AC units without modification.

Other Appliances To Consider With A 2200 Watt Generator

Air conditioners are the hardest-hitting appliance, but remember to account for usage of:

• Microwaves: 1,000–1,500 watts (running)
• Toasters, Coffee Makers: 800–1,200 watts
• Hair Dryers: 1,200–1,800 watts
• Water Heaters (electric): 1,400+ watts

Only run one high-power device at a time with a 2200-watt generator to avoid tripping overload protection.

How To Choose The Best RV Generator For Your Needs

Portability Or Power?

If moving the generator often or stowing it in small compartments is critical, 2200-watt inverter generators are best-in-class for weight and ergonomics. But for dual-AC rigs, residential fridges, or full-time summer use, consider 3000–3500 watt models or dual parallel units.

Fuel Options: Gasoline, Propane, Or Dual-Fuel

Many RVers prefer dual-fuel generators that can run on gasoline or propane, offering flexibility and longer runtimes. Some 2200-watt inverter models are dual-fuel, but more selection is available in the 3000-watt range.

Frequently Asked Questions

What’s The Difference Between Starting And Running Watts?

Starting watts are the surge of power required when an appliance first turns on. Running watts are the power needed to keep it running. A generator is rated for both—exceed either, and the generator may overload or shut down.

What If My Generator Overloads?

If the generator’s overload light comes on or it shuts down, disconnect all appliances and reset the breaker. Reduce the load and try again. Persistent overloads indicate the generator is too small for your RV’s demands or that a fault exists in the AC or generator.

Should I Buy A Soft Start For My RV AC?

For RVers using portable generators, soft starts are highly recommended. They increase the odds that a 2200-watt generator will successfully start and run the air conditioner, especially when you can’t control outside temperature or altitude.

Can I Run Other Appliances While My AC Is On?

With a 2200-watt generator, other high-wattage devices should be avoided when running the AC. Minor devices or chargers are typically fine, but add them gradually and watch for signs of generator strain.

How Can I Lower My AC’s Power Needs?

Clean air filters in the AC, keep RV shades closed, use reflective covers, and park in the shade. A well-maintained AC and insulated RV will run more efficiently, reducing generator workload.

Key Takeaways For RV Owners

• A 2200-watt generator is marginal for running standard RV air conditioners without upgrades or modifications.
• A soft start device is the single best upgrade for compatibility.
• Parallel operation, choosing a lower-BTU AC, and careful load management significantly improve your results.
• Altitude, temperature, and power cord quality make a tangible difference.

An informed decision ensures your generator investment delivers cool, comfortable, and worry-free RV adventures.