What does a generator monitor do?
A monitor reports whether a generator is running, its fuel or battery state, runtime hours and any faults. Some send alerts to your phone when the unit starts, stops or needs maintenance. Others log data for later review.
For a farm with a freezer, a milking setup, a sump pump or a well pump, knowing the backup actually came on can save a lot of worry.
Keep the generator's model and serial numbers in your records, since technicians and parts suppliers will ask for them.
What types of monitoring are there?
Many standby generators have built-in apps or control panels with cellular or wifi connections. Portable units may have only a simple display. Aftermarket sensors can add alerts for power loss, low fuel or temperature.
Ask what the system needs to work. A wifi-based monitor may fail in the very outage you are trying to survive, if your router loses power too. Cellular options can be more reliable if you have coverage.
Ask the dealer whether a monitor can be added to the unit you already own before replacing anything.
- Built-in controller with an app
- Power-loss alert devices
- Fuel level gauges and sensors
- Maintenance reminders and runtime logs
How does monitoring fit with maintenance?
Generators sit idle for long periods, then are asked to work in bad conditions. Follow the manufacturer's maintenance schedule from the manual for oil, filters, battery and fuel care. Do not rely on memory or advice from a forum for intervals or specifications.
A regular test run is a common practice, and your monitor can confirm it happened. Keep a written log with dates, hours and any problems, so a technician has something to work from.
Cold weather can make starting harder, so ask the manufacturer or a technician what cold-weather care your unit needs.
What are the carbon monoxide risks?
Generators produce carbon monoxide, a gas that cannot be seen or smelled and can kill quickly. Never run a generator inside a house, garage, barn, shop or other enclosed or partly enclosed space. The CDC and the manufacturer's manual give guidance on safe placement.
Install working carbon monoxide alarms in living areas, and replace them as the manufacturer directs. If anyone feels dizzy, sick or has a headache while a generator is running, get to fresh air and call 911. Contact a doctor or the county health office with questions.
What about fuel storage and refueling?
Fuel is flammable. Store it in approved containers, away from living areas and heat sources, and follow local fire rules. Let a hot generator cool before refueling, according to the manual.
Ask your local fire department about safe storage amounts and locations on your property. Old fuel can cause starting problems, so ask the manufacturer or a technician how to keep it fresh.
Never add fuel to a running or hot generator, and keep a fire extinguisher suited to fuel fires near the area as local fire officials advise.
Who should install and connect it?
Connecting a generator to a house wiring system is dangerous if done wrong. A bad connection can send power back to the utility lines and injure line workers. Use a licensed electrician and the proper transfer equipment, and check local permit requirements with the county building department.
Ask your electrician which loads the unit can carry. Overloading shortens the life of the generator and can create risk.
Ask the electrician to label the transfer switch clearly and walk everyone in the household through what it does.
How do you plan for a long outage?
Think through what you need to keep running and how long your fuel will last. Write a checklist for starting, loading and shutting down the unit, so a family member can do it if you are away. Keep spare parts and supplies that the manual recommends.
Ready.gov offers general guidance on outage planning, and your county emergency management office can tell you about local alerts and support. Check on neighbors who may depend on medical equipment.
Include pets and livestock in your plan, since heat, cold and water supply matter for animals during a long outage.
Key takeaways
- Monitoring tells you if the backup actually started and how it is running.
- Check whether alerts work when your internet or power is down.
- Follow the manufacturer's manual for maintenance and write down each service.
- Never run a generator in or near an enclosed space and keep working carbon monoxide alarms.
- Use a licensed electrician for any connection to house wiring.
Sources and further reading
Last reviewed: November 12, 2026. Written by the Rural Farm Life Editorial Team. See our editorial policy.