Generator Maintenance

You made an investment in a standby generator for your home.

You want your generator to run at maximum efficiently, and as long as possible. A standby generator can conceivably last 15 to 20 years if properly maintained. The best way to ensure your investment will have a long, reliable operating life is to maintain it though O.J. Mann Electric’s Preventative Maintenance Program- performed twice a year, every 6 months.


Air-Cooled Guardian Series 7.5 - 24 kW

Twice a Year
$ 370
Once a Year
$ 235