Some Yamaha generators that have received good reviews include the EF2000iS Inverter, EF2400iSHC Inverter and EF5500DE. Popular Mechanics, Camping Life magazine and BestReviews.com all named the Yamaha EF2000iS Inverter generator as one of the best small or portable generators on the market.
The EF2000iS is a gas-powered generator capable of producing up to 2,000 watts of AC power. This model features a very effective muffler that ensures it produces much less noise than many comparable models. This model is also lightweight, highly efficient and easy to start, and it features an Economy mode that allows it to run for up to 10.5 hours without needing additional fuel.
The slightly more powerful Yamaha EF2400iSHC has also received good reviews, with PortableGeneratorGuide.com naming it the best RV generator for 2014. Some of the reasons given were its excellent user satisfaction ratings, as well as its light weight and price, which is much more reasonable than comparable Honda generators.
The 5,000-watt Yamaha EF5500DE also rates highly, especially in terms of its safety features, fuel efficiency and running time. This generator is capable of running for nine hours on a full load or 12 hours with a half-load. In terms of safety features, this model features a ground-fault circuit interrupter that lowers the risk of electrocution.