The EcoFlow Wave 3 is not for the weak. I brought my dog, along with my friend’s dog, to see whether the Wave 3 could quickly cool down a hot parked car. The EcoFlow Wave 3 is by far the most intimidating piece of gear I’ve reviewed to date. The EcoFlow Wave 3’s use of R290 refrigerant, also known as propane, is a better choice for the environment but it is also highly flammable. So if you’re camping and placing the Wave 3 outside your tent and in the elements, it’s best to check the weather.