Just like with a car or truck, your backup generator is an investment that needs to be serviced and maintained properly.  The trained and experienced staff of Grasten Power Technologies stocks all parts and tools necessary for us to offer maintenance plans and provide around-the-clock emergency services.

Grasten technicians are able to service generators purchased through us or through someone else, and provide both warranty work and non-warrantied servicing to any kind of generator, including:

  • Natural gas generators
  • Propane gas generators
  • Diesel backup generators
  • Generac generators
  • Portable gas generators
  • Generac home generator systems
  • Portable propane generators
  • Residential standby generators
  • Commercial & industrial standby generators of all types

We offer our customers one year of free maintenance from our specialists to ensure that your property is protected from any unexpected power failure.  We also sell extended maintenance plans and after-market warranties to any generator owner.

What Does “Maintenance” Include?

To help you avoid inconvenient and expensive repairs during the life of your backup generator, our preventative maintenance plans ensure smooth and consistent operation. These plans, based on the manufacturer’s recommendations, include semi-annual “check-ups” (the Guardian® factory service schedule 4.13) and cleaning by a qualified professional. During the check-up, your generator will be tested and individual parts of the system are inspected to ensure they continue to function properly when you need them.

Preventative Maintenance Visit 1

  • Change Engine Oil & Engine Oil Filter
  • Inspect & Adjust Belts, Hose Clamps, Fuel Supply Connections, & Exhaust Manifold Bolts
  • Inspect & Repair Leaks in Cooling System & Engine Oil System
  • Test Battery Voltage, Water Level, Alternator Voltage, Generator Output Voltage, & Frequency
  • Check & Adjust Engine Exerciser Circuits

Preventative Maintenance Visit 2

  • Inspect & Adjust Belts, Hose Clamps, Fuel Supply Connections, & Exhaust Manifold Bolts
  • Inspect & Repair Leaks in Cooling System & Engine Oil System
  • Test Battery Voltage, Water Level, Alternator Voltage, Generator Output Voltage, & Frequency
  • Check & Adjust Engine Exerciser Circuits
  • Clean & Condition unit

Preventative Maintenance Specials

The preventative maintenance specials we offer are the most affordable way to ensure that you backup generator will be ready and working year-round.

2-Year Contract with Semi-Annual Visits

Generator TypeGenerac PriceKohler Price
Air Cooled$395$395
Liquid Cooled, upto 60 kW$495$495
Liquid Cooled, 70-150 kW$695$695

One-Time Visit Costs

Visit TypeGenerac PriceKohler Price
Air Cooled Maintenance$295$295
Air Cooled Inspection$175$175
Maintenance$395$395
Inspection$225$225
Maintenance$495$495
Inspection$275$275

Hourly Labor & Trip Charges

Labor TypeHourly Rate
Trip Charge (w/ Contract)$175
Trip Charge (w/o Contract)$225
Servicing Time (30 min Increments)$125
Return Trip Charge$125
Emergency Call (w/ Contract)$225
Emergency Call (w/o Contract)$350

Contact us today at 281-259-6500 to discuss your standby generator needs!