When choosing a generator for your travel trailer, you’ll need to match power output with your specific needs. Your air conditioner will likely be the biggest power consumer, requiring 3,000-3,500 watts just to start up. Don’t make the common mistake of underestimating your requirements—this leads to tripped breakers and frustrating camping experiences. The right generator size depends on several factors beyond just the AC unit, and making the wrong choice could leave you quite literally in the dark.
Understanding Generator Types for Travel Trailers
Before selecting a generator for your travel trailer, you’ll need to understand the different types available on the market.
Conventional generators are typically more affordable but noisier, while inverter generators provide cleaner power for sensitive electronics and operate more quietly.
Portable generators offer flexibility and can be moved as needed, weighing between 50-250 pounds depending on power output.
Built-in generators, though more expensive, integrate seamlessly with your trailer’s systems.
Fuel types also matter considerably.
Gasoline generators are common and readily available but have shorter shelf life.
Propane models run cleaner and store fuel longer, while diesel generators offer excellent fuel efficiency for higher wattage needs.
Dual-fuel options provide flexibility, allowing you to switch between fuel sources as needed.
Calculating Your Travel Trailer’s Power Requirements
Now that you’re familiar with generator types, determining your exact power needs is the next logical step.
Start by listing all appliances and devices you’ll run simultaneously. Check their wattage requirements, typically found on labels or manuals.
Pay special attention to items with high starting watts like air conditioners, which need 2-3 times their running wattage during startup. Your microwave might draw 1000W, refrigerator 600W, and AC unit 1500-2000W running (3000-4000W starting).
Add up your essential running watts, then factor in starting watts for your largest appliance. For example, if your devices total 2500W running with a 3000W-startup AC, you’ll need at least a 5500W generator.
Always choose a generator with 20% more capacity than your calculations indicate.
Matching Generator Size to Your Air Conditioning Needs
Since air conditioners typically consume the most power in travel trailers, they’ll largely determine what size generator you need.
Most RV air conditioners range from 13,500 to 15,000 BTU and require 2,800-3,500 starting watts and 1,500-2,000 running watts.
For a 13,500 BTU air conditioner, you’ll need at least a 3,000-watt generator. A 15,000 BTU unit requires 3,500+ watts. If you’re running multiple appliances alongside your AC, size up accordingly.
Remember that generators perform best when running at 50-90% capacity. Operating consistently near maximum output reduces efficiency and shortens lifespan.
A 3,500-watt generator for a 13,500 BTU AC provides the ideal balance of power and headroom for additional devices.
Portable vs. Onboard Generators: Pros and Cons
When deciding between portable and onboard generators for your travel trailer, you’ll face a significant choice that affects your camping experience and budget.
Portable generators offer flexibility, allowing you to power other devices away from your trailer and position them for noise reduction.
They’re typically less expensive and easier to replace or upgrade. However, they require manual setup, storage space, and external fuel management.
Onboard generators integrate seamlessly with your trailer’s systems, automatically charging batteries and powering appliances.
They’re permanently installed, saving storage space and eliminating setup time. The downsides include higher installation costs, more complex maintenance, and being fixed to your trailer, limiting their versatility for other uses.
Your choice should balance convenience, budget, and how you’ll use your trailer.
Noise Considerations When Choosing a Travel Trailer Generator
Beyond the portable versus onboard decision, generator noise levels can make or break your camping experience.
Generator noise is measured in decibels (dB), with quieter models typically ranging from 50-60dB—comparable to normal conversation—while louder units can exceed 70dB.
Most campgrounds enforce noise restrictions, often requiring generators under 60dB, especially during quiet hours. National parks are particularly strict about generator noise.
Inverter generators are considerably quieter than conventional models because they adjust engine speed based on power demand.
Look for features like sound-dampening technology, enclosed casings, and vibration reduction mounts for minimal noise disruption.
Remember: your peaceful outdoor getaway shouldn’t come at the expense of your neighbors’ tranquility, and excessive noise can get you asked to leave some campgrounds.
Fuel Efficiency and Runtime Factors
Although generator wattage may be your primary concern, fuel efficiency and runtime deserve equal attention when selecting a generator for your travel trailer.
Generators with larger fuel tanks naturally run longer, but they’re also heavier and take up more storage space.
Most portable generators deliver 8-12 hours of runtime at 25% load, but this decreases considerably at higher loads. You’ll want to calculate your average daily power needs to determine if one tank will last through the night.
Inverter generators typically offer better fuel efficiency than conventional models, consuming less gas while adjusting output to match demand.
For extended boondocking, consider dual-fuel models that run on propane or gasoline, giving you flexibility when supplies are limited.
Top Generator Brands and Models for Travel Trailers
Now that you understand the importance of fuel efficiency and runtime, let’s examine the most reliable generator brands and models for your travel trailer.
Honda remains the gold standard with their EU2200i and EU3000iS inverter generators, offering exceptional reliability and quiet operation.
Yamaha’s EF2000iSv2 and EF2400iSHC deliver comparable quality in compact packages.
Champion’s dual-fuel models like the 3400-watt provide versatility for longer trips.
For budget-conscious travelers, WEN generators offer solid performance at lower price points.
If you need maximum power, consider Westinghouse’s iGen4500 or Generac’s GP3500iO.
For lightweight options, the Briggs & Stratton P2200 weighs just 54 pounds while delivering 2,200 starting watts—perfect for weekend campers who prioritize portability.
Installation and Maintenance Best Practices
Once you’ve selected the right generator for your travel trailer, proper installation and regular maintenance will guarantee peak performance and longevity.
Mount your generator on a level, well-ventilated platform at least 3 feet from your trailer. Always connect using the appropriate gauge power cable and verify proper grounding.
Maintenance is essential—check oil levels before each use and change oil every 50-100 operating hours.
Clean or replace air filters monthly during heavy use. Inspect spark plugs quarterly and replace annually. Run your generator for 20 minutes monthly, even in storage, to prevent fuel system issues.
Store your generator in a dry location with stabilized fuel if inactive for more than 30 days.
For winter storage, drain fuel completely or add stabilizer and run until the carburetor is empty.
