Honda overhead valve commercial grade engines power the economy series of generators.  Designed for homeowner and light contractor use, this series is definitely low-end:  no bells and whistles available. 

The EN2500 has a full frame to protect the engine, which puts out a maximum of 2500 watts.  This size unit can provide back-up temporary power for lights, fans, TVs, and many appliances.  Refrigerators, freezers, and sump pumps can be run during power outages from this generator.

The EG2500 is a bit more rugged and can be used for commercial applications.  The protective tube frame makes this suitable for basic power requirements on a job site, such as for operating power tools.  The EG3500 has stable power output with an automatic voltage regulator.  Surge power of 3500 watts at120/240-volts is available.

The EG5000 is the biggest of Honda’s economy line of generators.  It provides a maximum of 5000 watts and is housed in a protective tube frame.  The automatic voltage regulator provides stable power output.