Generator Service

Professional Maintenance & Repair

Here at ThermFlo, your power is our priority. We provide a comprehensive range of services to ensure you don’t get left in the dark. Our factory-trained, Generac certified technicians are available 24 hours a day, 7 days a week, 365 days a year for any planned maintenance service, field service, or emergency service, eliminating as much downtime as possible.

As the authorized service representative in Northern Illinois for Generac Power Generation equipment, we can assure you, you are in good hands.

Quality service when you need it most

Our Generator Services Include:

  • General Inspection
  • System Monitoring (OmniMetrix)
  • Lubrication Service
  • Cooling System Service
  • Fuel System Service
  • Equipment Exercise


7:00 am - 5:00 pm, Monday through Friday Service requests can be placed using phone, fax or email.

Phone: 847-353-5353 Fax: 847-541-0272 [email protected]


Including Holidays - Service requests can be placed by phone, and will be routed to our call desk through our 24-hour answering service.

Phone: 847-541-0029