Best for small to midsize motorhomes and other RVs prepped for an onboard generator with a dedicated space for permanent installation. Economical to operate with low fuel consumption. These RV Generators Meet National Park Service sound level requirements of less than 60 dB(A) measured at 50 feet for use in national parks. RV Generators up to 4kW provide power for A/C, lights, entertainment, and appliances.