When you are wondering how big of an RV wood stove you actually need to heat your RV, luxury travel trailer, or van, always measure first. Sizing a wood burning stove stops you from making a big mistake. In other words, you don’t want to purchase the biggest stove available. First, you need to know how big the space is that you’re heating. RVs do not get much larger than 400 square feet, meaning a mini wood burning stove like the Cubic Mini Stove (1386 cubic inches) could be enough to heat most of the space. Most wood stoves for RVs are rated in kilowatts (KW), but if you find one rated with BTUs, 1 kW = 3412.14 BTU/hr; you want around 6,000-14,000 BTUs to feel a perceptible difference in temperature. Many retailers also provide calculators to help you find which wood stove size is right for your RV. An RV that is 23 ft long, 7 ft. wide, and 7 ft. tall will need a 5kW stove.