Migliaccio & Rathod LLP is investigating reports of potential fuel mixer and fuel-control system defects affecting certain 2025–2026 Generac Next Generation home standby generators.
Generac’s Next Generation platform includes air-cooled home standby generators ranging from approximately 10 to 28 kW. These generators are designed to automatically provide backup electricity when utility power is lost.
Recent reports from generator technicians describe problems involving fuel mixers, fuel sensors, fuel shutoff assemblies, ECM components, and related fuel-control equipment on some early Next Generation units. One technician reported multiple mixer replacements among Generac Next Generation generators serviced by the technician’s company, while other reports describe early units receiving replacement ECMs, wiring components, or fuel-system parts. Pasted markdown
Technicians have also reported that a revised mixer may have been introduced for some affected generators. Migliaccio & Rathod is investigating whether certain early-production Generac Next Generation generators contain a common fuel-control component that can fail and prevent the generator from reliably operating when backup power is needed. The underlying manufacturer bulletin referenced in technician reports has not yet been independently confirmed. Pasted markdown
Owners May Have Experienced:
- Failure to start or repeated overcrank conditions;
- A generator starting but failing to remain running;
- Fuel-pressure, fuel-delivery, or manifold-related error codes;
- Replacement of the fuel mixer or fuel sensor;
- Replacement of the ECM, wiring harness, or fuel-shutoff assembly; or
- Failure to provide backup power during an actual outage.
Potential Claims May Include:
- Defective fuel-control components;
- Defective design or manufacturing;
- Breach of express or implied warranties;
- Failure to provide an effective repair;
- Loss of use or diminished product value; and
- Violations of applicable consumer-protection laws.
Signs You May Be Affected:
- You purchased a 2025–2026 Generac Next Generation standby generator;
- Your generator experienced repeated starting or fuel-system problems;
- Your dealer replaced the fuel mixer, ECM, fuel sensor, or fuel-shutoff assembly;
- Your generator displayed overcrank or fuel-related fault codes;
- The problem returned after repair; or
- Your generator failed during an actual power outage.
If you have encountered these issues, we would like to hear from you. Please complete the contact form on this page, send us an email at [email protected], or give us a call.