Comprehensive Generator Maintenance Services
A standby generator is only as reliable as the maintenance it receives. Generator One’s factory-trained technicians provide comprehensive generator maintenance and service plans throughout Ohio, ensuring your system is always tested, tuned, and ready to perform when the power goes out. With 24/7 support, manufacturer-certified expertise, and a commitment to proactive care, Generator One keeps your investment protected for the long term.
Proactive generator maintenance delivers two critical benefits: it prevents costly emergency repairs by catching issues before they become failures, and it ensures your system starts reliably during the outage events that Ohio’s severe weather seasons reliably deliver. A generator that hasn’t been serviced in years may fail to start exactly when you need it most — and the consequences of that failure can be measured in thousands of dollars of property damage, spoiled inventory, or dangerous conditions for vulnerable household members.
Choose the Right Service Level for Your Generator
Every service includes our exclusive 40-Point Maintenance Process — a comprehensive inspection that verifies engine speed, voltage regulation, battery health, serial numbers for recalls, airflow, cooling, and system readiness. Available for all generator brands we install and service, including Generac, Kohler, and Briggs & Stratton.
Standard Service
$284.95
4+ Days of Runtime • 100 Hours Continuous Use
Factory-specified filters, semi-synthetic oil, and spark plugs gapped to spec
Exclusive 40-Point Maintenance Process
Engine speed and voltage regulation verification
Battery testing and service to extend life
Serial number check for factory updates or recalls
Full visual inspection for proper airflow and cooling
Simulated power outage test (when conditions allow)
Fortified Service
$334.95
5+ Days of Runtime • 120 Hours Continuous Use
Everything in Standard Service, PLUS:
Greenlight Performance IOA Additive — advanced oil treatment
Protects engine during extreme operating conditions
Manages moisture and reduces wear beyond standard synthetic oils
Supports longer oil life during extended outages (5+ days)
Rated Great for long-term storm outages
Twice the Life!
$599.95
8+ Days of Runtime • 200 Hours Continuous Use
Castrol EDGE™ Extended Performance 5W-30 high-temperature oil
Extended-capacity oil filter for longer service intervals
Greenlight Performance IOA oil additive for extreme conditions
Premium NGK spark plugs
Greenlight Performance synthetic-media air filter — 4× airflow
Reduces wear, improves engine performance
Rated Excellent for long-term storm outages
Fully reengineered service for maximum protection
Why Trust Generator One with Your Generator Service?
- Factory-Trained Technicians — Our service staff hold manufacturer certifications and receive ongoing training, ensuring your generator is serviced to the exact specifications Generac and other manufacturers require.
- Parts Availability — Generator One maintains an extensive inventory of generator repair parts at our Mentor facility, eliminating the wait times associated with parts ordering and enabling same-visit issue resolution in most cases.
- 24/7 Live Phone Support — Our support line is staffed around the clock with real Generator One team members — not an answering service — providing immediate guidance for any urgent situation.
- Documented Service Records — Every maintenance visit is fully documented, creating a service history that supports manufacturer warranty compliance and resale value for your property.
What’s Included in Your Annual Generator Service?
Generator One’s annual maintenance service follows manufacturer-recommended guidelines and covers every critical system component:
- Thorough Visual Inspection — Full assessment of the generator unit, transfer switch, fuel system connections, exhaust system, and electrical connections for signs of wear, corrosion, or damage
- Oil & Filter Change — Fresh engine oil and a new oil filter are installed to protect engine components and ensure clean lubrication
- Air Filter Inspection & Replacement — Air filter condition is checked and replaced as needed to maintain proper combustion and engine performance
- Spark Plug Inspection — Spark plugs are inspected for wear and replaced if they fall outside manufacturer specifications
- Battery Test & Service — Battery voltage, terminal connections, and charge condition are tested; battery is replaced if it fails load testing
- Load Test — The generator is run under load to verify output capacity and confirm that the system performs to specification
- Transfer Switch Operation Test — The automatic transfer switch is tested for proper operation, confirming it will detect an outage and transfer power within the required time
- Cooling System Check — Coolant level and system integrity are checked on liquid-cooled units
- Exhaust System Inspection — Exhaust connections and components are inspected for leaks or damage
- Firmware & Software Update — Control board firmware is checked and updated where applicable for Generac units
Remote Monitoring for Unmatched Peace of Mind
Generac Mobile Link remote monitoring takes generator maintenance to the next level by connecting your system to a cloud platform that tracks performance in real time. Generator One uses Mobile Link data to:
- Monitor system health continuously — receive instant alerts if your generator detects a fault between scheduled maintenance visits
- Review specific fault codes remotely — allowing our technicians to diagnose issues and prepare the right parts before arriving on-site
- Track run hours and maintenance intervals — ensuring your service schedule stays aligned with actual system usage
- Enable proactive service scheduling — replacing reactive emergency calls with planned, efficient service visits
Mobile Link is available as an add-on accessory for compatible Generac units and is included in Generator One’s service setup process for all new installations.
Generator Maintenance Service Across Ohio
Generator One dispatches maintenance technicians from our Mentor headquarters throughout our entire Ohio service territory. Whether your generator is in Ashtabula County, Greater Cleveland, Summit County, or Stark County, we’ll schedule a convenient service appointment and arrive on time.
Address: 8644 Station St, Mentor, OH 44060
Phone: (440) 346-7250
Emergency Service: 24/7 Live Support Available
Generator One 40-Point Yearly Maintenance Checklist
Every Generator One maintenance visit follows this comprehensive 40-Point inspection covering the engine, alternator, controls, and automatic transfer switch.
Engine, Alternator & Controls (1–23)
- Change lubrication oil (included)
- Replace the oil filter and inspect the base (included)
- Replace spark plugs as needed
- Inspect ignition coil wires and plug caps
- Inspect the cooling system and clean the fins
- Top off the radiator (liquid-cooled up to 1 gallon)
- Inspect fan guard for condition and security
- Inspect and clean the air filter and pre-cleaner
- Replace fuel filters (diesel and gasoline)
- Inspect engine gaskets, breathers and fuel regulation components for fuel or oil leakage
- Inspect and adjust engine belts, hoses and clamps
- Lubricate governor and carburetor linkage
- Load test battery and record VDC readings
- Service battery, add water to electrolyte and clean posts
- Check and record battery static and running charging rates
- Inspect engine and battery heaters for proper operation and electrical safety shutdown devices
- Inspect the unit for excessive noise or vibrations
- Inspect mounting bolts, brackets and coupling connections
- Check, calibrate and record AC output voltage and frequency
- Inspect the engine, alternator, and control wiring
- Clear dampers, louvers and air intakes
- Wipe down the outside of the generator and engine
- Update main controller OEM firmware as updates become available
Automatic Transfer Switch (24–29)
- Inspect for overheated power terminals and lugs
- Inspect control board wiring and connections
- Check and adjust the exercise clock setting (as needed)
- Inspect the mechanical switchgear mechanism
- Check time delays (as needed)
- Perform power outage simulation with permission
Trusted by Thousands of Customers
Generator Maintenance Component Guide
Just like a car, your Generac standby generator needs regular maintenance to run reliably. Here’s what our certified technicians inspect and service on every visit.
Oil Changes
Generac standby generators need regular oil changes and oil filter replacements. Depending on the size of your generator, oil changes are typically required every 200 hours of use or annually. Reusing old filters with fresh oil defeats the purpose — always replace both together.
Spark Plugs
Spark plugs are critical to your generator’s ability to provide backup power during outages. They usually don’t need to be swapped out as regularly as oil, but should be inspected during every service visit and replaced when worn.
Filters
Generac generators have three primary filters — oil, fuel, and air — that should always be inspected and replaced as needed:
- Oil filter: Replace every time the oil is changed
- Fuel filter: Evaluate during inspections; replace when dirty or old
- Air filter: Inspect during every maintenance visit to ensure proper airflow
Battery
Smaller home and commercial Generac generators have one large battery and a charger to maximize battery life. During maintenance, ensure the battery and charger are tested and the battery has good amperage. If the charger isn’t working, the battery will lose its charge and fail when you need it most.
Gas Regulator
Natural gas regulators require periodic maintenance. Gaskets, diaphragm pumps, and leaks are weak points in your fuel system that can cause serious issues if neglected. Our technicians inspect the entire fuel delivery system during every service visit.
Other Critical Components
- Battery charger: Tested to ensure it’s maintaining proper charge
- Coolant system: Checked on liquid-cooled units
- Alternator: Often overlooked but critical to power output
- Transfer switch: The most common problems occur on units exposed to the elements
Frequently Asked Questions About Generator Maintenance
Common questions about our generator services
What is the cost of a service plan?
Generator One offers three maintenance service levels for your generator: Standard Service ($284.95) includes factory-specified filters, semi-synthetic oil, spark plugs, battery testing, and our exclusive 40-Point Maintenance Process; Fortified Service ($334.95) adds Greenlight Performance IOA Additive for extended-outage protection; and Twice the Life! ($599.95) is our premium reengineered service with Castrol EDGE™ 5W-30 oil, NGK spark plugs, and a 4× airflow air filter. Every level includes the 40-Point Maintenance Process and is available for all generator brands we install and service — Generac, Kohler, and Briggs & Stratton. Contact us for a plan recommendation based on your generator model and usage.
How often should my generator be serviced?
Most standby generators should be serviced at least once per year, even if they haven’t run frequently. If your generator operates regularly — such as during extended outage seasons — more frequent service may be recommended. Generator One follows manufacturer guidelines for service intervals on all brands we support.
Do you cover warranty claims as part of maintenance?
Yes. Keeping your generator on a regular maintenance schedule is essential to preserving your manufacturer warranty. Generator One documents all service visits and can process warranty claims on Generac equipment as an authorized service center. We’ll flag any warranty-eligible issues discovered during routine maintenance visits.
Can you service a generator I didn’t buy from you?
Absolutely. Generator One services generators purchased from us or from any other source. We support all major brands for both routine maintenance and emergency repairs.
What does remote monitoring do for maintenance?
Generac Mobile Link remote monitoring connects your generator to a cloud platform that tracks system health in real time. Our technicians can review specific fault codes remotely, often diagnosing issues before they become failures. This allows us to schedule proactive service visits, reduce emergency calls, and ensure your generator is always in standby-ready condition.
