The Everlite Hybrid Indoor Standby - The New Revolution in Back-up Energy Power The Everlite Hybrid Indoor Standby is the world’s first indoor backup power system that can power an entire home or business on three separate fuels including Natural Gas, Liquid Propane, even Home Heating Oil. Use as a standalone unit or easily couple indoors to virtually any boiler or furnace for instant and reliable backup power. Everlitehybrid.com~Site InfoWhoisTrace RouteRBL Check