Anyone who travels a lot – whether in a motorhome, van, tiny house or tent – knows: In summer temperatures, a A reliable air conditioner is worth its weight in gold. But not every solution is suitable for every application. In this comparison, we present two popular air conditioning systems: the mobile EcoFlow WAVE 3 and the permanently installed Bergstrom OpenAir 12 V. Both systems score points with high performance, operate efficiently and are suitable for self-sufficient applications – but differ significantly in their construction, operation and intended use.
EcoFlow WAVE 3: Portable air conditioner with battery - cooling & heating anywhere
The EcoFlow WAVE 3 is a modern, portable air conditioner specifically designed for mobile use. It combines high cooling and heating capacity with a self-sufficient battery module – for maximum flexibility, even without a fixed power connection. With a cooling capacity of 6100 BTU (approx. 1800 W) and a heating capacity of 6800 BTU (approx. 2000 W), it can lower or raise the temperature in small rooms by up to 8 °C within 15 minutes. This makes it ideal for tents, vans, garden sheds, or off-grid homes.
A real highlight is the 1024 Wh add-on battery , which enables up to eight hours of wireless operation. The battery can be charged flexibly via 230 V AC, 12/24 V DC, a solar panel, or even on the go using an alternator charger – meaning while driving. It's conveniently controlled via the EcoFlow app, which allows you to monitor all operating modes, timers, and battery status, even remotely.
The WAVE 3 is completely mobile, easy to set up, and requires no permanent installation. It's therefore ideal for travelers who value quick setup, maximum independence, and compact dimensions.
Bergstrom OpenAir 12 V: Efficient roof air conditioner for permanent installation
However, for those seeking a permanent, permanently installed solution for their motorhome or campervan, the Bergstrom OpenAir 12V is the ideal choice. This roof-mounted air conditioner was specifically designed for vehicles and operates entirely on 12-volt direct current – directly from the vehicle's battery, without the need for an inverter.
The cooling capacity is up to 2020 W (alternatively adjustable to 1230 W) and ensures a comfortable indoor climate even at high outdoor temperatures. Thanks to full inverter technology, the unit operates particularly quietly, efficiently, and with minimal wear. Low power consumption, a slim design (only 20 cm), and a modern operating concept make the OpenAir a well-designed solution for demanding travelers. Vertically adjustable air outlets, an integrated touch panel, an IR remote control, and LED ambient lighting complete the high-quality overall design.
The OpenAir 12V is ideal for anyone who wants to permanently equip their vehicle with a powerful air conditioning system. Once installed, it runs reliably in continuous operation – even while driving – and is perfectly suited for vehicle electrical systems with high-quality lithium batteries such as the WATTSTUNDE NOVA series .
Which air conditioner is suitable for which application?
The decision between EcoFlow WAVE 3 and Bergstrom OpenAir 12 V depends heavily on the type of project and individual requirements:
The EcoFlow WAVE 3 is ideal for:
- mobile deployments without a fixed power supply
- Tents, vans, tiny houses and cabins
- Travelers who want to combine cooling and heating
- Users who prefer a plug-and-play solution
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People who seek maximum independence through battery operation
The Bergstrom OpenAir 12V is perfect for:
- permanent installation in motorhomes and campervans
- larger vehicles with 12V electrical system
- Users who are looking for a quiet, high-performance solution
- Travel with high comfort expectations, even in hot weather
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Projects requiring optical integration and fixed mounting
Conclusion: Mobile or permanently installed? The right solution for your climate project
For those seeking a flexible, portable, and ready-to-use air conditioner , the EcoFlow WAVE 3 offers a powerful all-in-one package with battery, app control, and heating function. It is ideal for temporary setups, changing locations, and anywhere permanent installation is not possible.
For anyone who wants to permanently upgrade their camper, van or motorhome, the Bergstrom OpenAir 12V offers A particularly efficient and quiet solution with high performance and proven technology – perfect for long journeys in any weather conditions.
👉 Discover now! You can find both models in our online shop – and if needed, we're happy to provide comprehensive advice and accessories for your perfect off-grid setup.
