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Running Caravan Air Conditioners: Generator Sizing & Setup

For running a caravan air conditioner, an inverter generator is the recommended choice. Unlike conventional generators, inverters provide "clean" power (a pure sine wave) that is safe for sensitive electronic components found in modern air conditioning units and other appliances. When selecting a generator, prioritize the following: Sizing (Wattage): Air conditioners have high "starting" (surge) watts when the compressor kicks in, which is often 3–6 times their running wattage. A generator in the 2.0kW to 4.5kW range is typically required to handle this surge comfortably. Always check your specific AC unit’s label for its starting and running requirements. Noise Levels: Since you will be using this at campsites, look for low-noise ratings. Modern inverter generators are designed to be significantly quieter than traditional open-frame models. Portability & Features: Features like wheels, handles, and remote or electric start can make daily use much easier. When selecting a generator for your caravan air conditioner, performance can be affected by more than just raw wattage. Here are the critical environmental and operational factors to keep in mind to ensure you have enough power when you need it most. Environmental Performance (De-rating) Generators produce less power in high heat, humidity, or at high altitudes. Heat Impact: As ambient temperatures rise, engine performance decreases. A good rule of thumb is to allow for a 1.5% decrease in output for every 5°C above 25°C. For example, on a 45°C day, your generator may output 6% less power than its rated capacity. Altitude: Operating at high elevations will further de-rate your generator’s output, meaning you should account for these drops when sizing your unit. Extension Lead Length In extreme heat, the length of your power cable matters. It is recommended to use a short lead (3–4 meters maximum) from the generator to your caravan. Using a longer cord can cause voltage drop, which may lead to issues starting your air conditioner's compressor. Factoring in Other Appliances Your generator needs to handle more than just the air conditioner. You must account for the total load of every device running simultaneously, such as: Battery chargers Refrigerators Lights and TVs If your generator is sized only for the air conditioner's surge, it will likely overload if you try to run your battery charger or other appliances at the same time. Recommendation Because of these variables, it is always a smart investment to opt for a generator with extra capacity beyond the peak draw of your air conditioner. This "headroom" ensures your system remains reliable, even on the hottest days or when you have multiple devices connected.

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Can I run a generator indoors?

No, you should never operate a generator indoors. Operating a generator inside your home, garage, basement, crawl space, or even near open windows and doors is extremely dangerous. Fuel-burning generators produce carbon monoxide (CO), a colorless, odorless, and tasteless gas that can be fatal in minutes. Why It Is Unsafe CO Buildup: Carbon monoxide accumulates rapidly in enclosed or semi-enclosed spaces. Because it is undetectable by human senses, it can overcome you before you realize there is a problem. Insufficient Ventilation: Standard home ventilation systems are not designed to exhaust the high volume of toxic fumes produced by a generator engine. Fire Hazard: Generators require significant airflow for cooling. Placing them in a confined area can lead to overheating and pose a serious fire risk. Safe Practices Outdoor Use Only: Always place your generator at least 6 meters (20 feet) away from your home, directed away from windows, doors, and air intakes. Install CO Detectors: If you use a generator, ensure you have battery-operated carbon monoxide alarms installed in your home. Keep It Dry: While generators must be outside, they should be placed on a dry surface and protected from rain or flooding using a specialized generator tent or canopy—never use an improvised cover that restricts airflow. If you are worried about power reliability and need a safe, indoor-friendly solution, have you considered looking into portable power stations (battery-based power banks)? These do not produce fumes and can be used safely indoors. We at the Generator Store offer a full range of generators and portable power stations.

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Is an inverter generator worth the extra money.?

Whether an inverter generator is worth the extra cost depends primarily on how you intend to use it. In short, if you are powering sensitive electronics (like laptops, smartphones, or medical equipment) or need to operate in noise-sensitive environments (such as camping sites or residential areas), the investment is generally considered worth it. If your primary need is powering heavy-duty tools or machinery on a work site where noise is less of a concern, a conventional generator may be more cost-effective. Why Inverter Generators Cost More The higher price reflects more advanced internal technology: Clean Power Output: Inverters convert energy into a stable, "pure sine wave" current, which is safer for delicate electronics than the "dirty" power produced by standard generators. Variable Engine Speed: They automatically adjust their engine speed to match the electrical load. This makes them significantly more fuel-efficient and quieter than conventional models, which typically run at a fixed, high RPM. Portability & Design: They are usually built with enclosed sound-dampening housing, making them much lighter and more compact. Key Considerations The "Clean Power" Factor: While some claim that modern conventional generators are safe for most devices, inverter generators guarantee low harmonic distortion (THD), which is critical for protecting expensive or sensitive digital equipment. Long-Term Savings: While the upfront cost is higher, the fuel savings and reduced wear on the engine (due to variable speed control) can offset the initial investment over time, especially with frequent use. Power Capacity: Conventional generators are often available in much higher power outputs for industrial needs. If you require massive wattage for a whole-house setup or large-scale construction, a high-capacity conventional generator is usually more practical. If you are leaning toward an inverter, we can help with our huge range of models based on your required wattage or intended use case (e.g., camping vs. home backup). Top-Rated Inverter Generator Brands Honda: Widely considered the "gold standard" for reliability and longevity. While often at a higher price point, their generators (like the EU series) are renowned for being ultra-quiet, fuel-efficient, and easy to maintain. They are a frequent choice for those who want a "forever" generator. Westinghouse: A very popular choice offering a balance of performance and value. Their iGen series is well-regarded for its clean power output (suitable for sensitive electronics), quiet operation, and intuitive features like digital displays. They offer a diverse range of power capacities, making them versatile for everything from camping to emergency home backup. Briggs & Stratton: Known for solid build quality and practical features, such as carbon monoxide safety sensors. Their models are often praised for being easy to start and offering good, stable power for standard household or recreational needs. Cromtech: A strong contender, particularly in the Australian market, for providing reliable equipment with excellent local customer support. Their Outback series is frequently recommended for caravanning and camping due to its durability and performance. Important Considerations Power Capacity: Before choosing a brand, ensure you calculate your total required wattage. Smaller, lighter units (1kVA–2kVA) are perfect for charging devices and running lights, while larger units (3kVA+) are necessary for items like caravan air conditioners or heavy-duty appliances. Service & Support: Because you are investing in a machine that requires maintenance, choosing a brand with a strong Australian service network (like Honda or Cromtech) can save time and money if you ever need repairs or parts.    

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New Westinghouse Auto Start Models

The Westinghouse portable generator range is expanding with some new exciting inverter generators, these include two new Auto Start Series models with intelligent 2-wire control. 

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What can you power with a Honda EU22i Generator.?

The Honda EU22i portable inverter generator may be small but it’s packed with features and innovations that will provide you with clean, friendly power to run things like sensitive electronic equipment at home or small power tools on a job site. A combination of lightweight materials and design, and an ergonomic handle make this generator [...]

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What is better a Generator or an Inverter Generator.?

Inverter Generators Vs Generator due to the similarity in usage, most people interchange these terms a lot, and there seems to be confusion among consumers on the differences between an inverter generators and conventional generator.And after knowing the differences, which one is better between the two?Two popular generator options are inverter and standard variants. They [...]

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Briggs & Stratton P3000i Inverter Generator Review

This new portable inverter generator from Briggs & Stratton is rated at 3KVA, with a continuous output of 2600W. Importantly, the Briggs & Stratton P3000i is a inverter generator so it produces a pure sine wave electricity that's recommended for use with sensitive electronic appliances. Briggs & Stratton is known worldwide for its small [...]

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Best 2KVA Inverter Generator - Honda EU20i vs Yamaha EF2000iS

Fuel Efficiency: The Honda EU20i can run up to 4 hours at full load and a impressive 15 hours at 1/4 load (with eco throttle mode on), while the Yamaha EF2000iS can run up to 4.2 hours on a full load and 10.5 hours at a 1/4 load (with eco throttle mode on). Both the [...]

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What Is The Right Size Generator For Your House?

The key to selecting the right size generator for your house is working out and adding up the load (wattage) for everything you need to power at once.Ask yourself are you planning to use everything in your home or just the basics like keeping your food cold, your lights on, charging phone/laptops, do you want [...]

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Yamaha EF2000iS Inverter Generator Review

Here in Australia the Yamaha inverter generator range are highly-regarded, as one of the best and for good reason. The Yamaha EF2000iS is the model of choice for many people, especially those needing a small, portable and quiet inverter generator for backup power and the more popular use of recreational power.Lets explore the main features [...]

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Honda EU20i vs The New EU22i Inverter Generator

For over a decade now, Australians have relied on the popular Honda EU20i inverter generator to run their campsites and caravans, the Honda EU20i was the perfect sized generator for campers who wanted to take advantage of what nature has to offer in the comfort and style they enjoy. The EU20i powered hair dryers, toasters, [...]

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Yamaha EF2400iS Inverter Generator Review

Out of Yamaha's extensive generator range the Yamaha EF2400iS inverter generator model, is their most popular, especially in the caravan / camping market. The Yamaha EF2400iS was voted the number one in the Australian Motorhome and Caravan Magazine, for the perfect generator model to take away with you, and with the amount of choices [...]

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