Rain got cheeky and soaked your portable generator? First rule—do not switch it on. Pull the plug, dry it out safely, and check for signs of damage. Generators hate surprise baths, and acting fast can save you a fortune in repairs. Keep reading for the full game plan to bring your machine back to life.
Can Generators Get Wet?
Generators should always be kept dry because even light rain can lead to electrical hazards, internal damage, or sudden shutdowns. Most units are weather-resistant at best rather than waterproof, so proper shelter or covers are essential during rain or snow. Whole-house generators handle the elements better than portable models, but they still need correct installation, ventilation, and regular checks to stay safe. Treat any wet generator with caution, allow it to fully dry, and protect it from ongoing moisture to avoid safety risks and costly repairs.
Are Generators Flood Proof?
Generators are not flood proof, and even models labeled as water-resistant can suffer serious damage or create electrical hazards when exposed to standing water. Elevating units, installing standby systems on higher ground, and disconnecting power before flooding are key steps to reducing risk. If a generator has been submerged, it should be inspected and serviced by a professional before reuse, especially when fuel contamination or hidden electrical damage is possible. Safe operation also means keeping generators outdoors, ensuring ventilation, and using proper protection like GFCI systems to reduce shock and carbon monoxide dangers.
Do Generators Leak Water?
Water dripping from a generator is often normal condensation from the exhaust, especially during cold starts or after long periods of inactivity. However, leaks with unusual color, smell, or location may indicate problems like oil, coolant, or cooling-system failures that need attention. Common causes include worn hoses, damaged radiators, faulty gaskets, or more serious issues like a blown head gasket or cracked engine block. Regular maintenance, inspections, and professional servicing help prevent leaks and ensure the generator runs safely and reliably.
What Happens if You Put Water in a Generator? Understanding the Damage
Generators and water? Never mates. One’s built to keep the lights on, the other wants to shut everything down. Mix them together, and you’ve got a recipe for disaster.
Water creeping into your generator can cause issues you won’t notice right away. Give it a day or two and suddenly, your trusty power source won’t even start.
Is It OK if a Generator Gets Wet? Assessing the Immediate and Long-Term Risks
It might look harmless—just a bit of water, right? Wrong. Even light exposure to moisture can cause lingering damage that’s hard to spot until it’s too late.
Whether it’s a splash from a hose or a full-blown downpour, water can get into places it shouldn’t. And once it’s inside? That’s when the real trouble starts.
Electrical System Damage and Short Circuits in a Wet Generator
Let’s be real—water and wiring have never gotten along. If water sneaks into the electrical system, it can short circuits, fry fuses, and cause total failure. Worst-case scenario? You cop a nasty shock.
Even worse, it could all happen silently—no sparks, no smoke—just a generator that no longer works when you need it.
Engine Hydro-Lock and Internal Corrosion from Water Ingress in Your Generator
Water in the engine is a different beast. If it makes its way into the cylinder, it could cause a hydro-lock. That means the piston can’t move, which could bend internal parts and wreck the motor.
Even if you dodge that bullet, moisture inside will still corrode metal parts over time. Rust is sneaky like that.
Prioritising Safety: Immediate Steps for Your Wet Generator
You might be tempted to crank the generator and see if it still runs. Don’t.
Start with safety first. The wrong move here can do more harm than good.
Shutting Down and Disconnecting a Water-Affected Generator
If your generator is on, switch it off immediately—but only if it’s safe. Do not touch it with wet hands or while standing in water. If it’s plugged into anything, disconnect it right away.
Use insulated gloves if needed. Your goal is to make the area and machine safe before anything else.
Preventing Further Damage After Water Enters Your Generator
Move the generator to dry ground or at least somewhere under cover. If you can, lift it up to help drain any trapped water underneath.
Open access panels and let some fresh air in. Don’t rush—give it time to breathe and dry.
How to Get Water Out of Generator: Step-by-Step Recovery Procedures
So your generator took a dive. Don’t panic. With the right steps, you might be able to bring it back without ringing a repair shop.
Initial Assessment and Drainage for Your Water-Damaged Generator
Start by giving your generator a good once-over. Check the fuel tank, oil chamber, air filter, and wiring for signs of water.
Get your tools ready—it’s time to drain and clean.
Draining Water from the Fuel Tank and Carburettor of Your Generator
If water made its way into the fuel tank, you’ll need to drain it all. Even a small bit of water can contaminate the fuel and stop the engine from running.
Also, empty the carburettor. A few drops in there can block fuel flow and cause stalling.
Removing Water from the Oil Sump and Air Filter Housing of Your Generator
Check the oil. If it looks milky or cloudy, water’s definitely in there. Drain the old oil completely and refill it once the engine is dry.
Then, pop off the air filter. If it’s soaked, replace it. A soggy filter just chokes the engine.
Thorough Drying Methods for Your Wet Generator's Components
Towels alone won’t cut it. You need a proper drying strategy.
Air Drying and Desiccants for Your Generator's Electrical Parts
Use clean cloths to remove any surface moisture. Then leave the generator in a warm, dry area with good airflow.
Chuck in a few silica gel packs or moisture absorbers near the control panel and outlets. They’ll help soak up what you can’t see.
Professional Drying Services for Complex Water Damage to Your Generator
If your generator was fully flooded or you spot signs of corrosion, call in a pro. Technicians have the tools to dry it without causing more issues.
They’ll also spot damage you might miss—and that could save your generator from a second disaster.
Restoring Your Generator: After Drying, Before Starting
It’s not ready yet. You need to do a couple more things before that first test run.
Lubricating Internal Components After Water Exposure for Your Generator
Once the internal parts are dry, add a bit of engine oil to the spark plug hole and cylinder. Crank the engine gently by hand to spread the oil and protect the surfaces.
This helps prevent rust and keeps everything moving smoothly.
Testing Electrical Continuity Before Attempting to Start Your Generator
Use a multimeter to check key circuits. If everything’s clear—no faults or breaks—you’re ready to give it a go.
Fill up with fresh oil and fuel, and only then, try to start the generator. Fingers crossed, it kicks back to life.
Preventing Water From Entering Your Generator: How to Cover Generator in Rain and More
The best fix? Not needing one in the first place. Let’s talk about stopping water from getting in at all.
Generator Cover and Generator Tent: Essential Protection for Your Outdoor Generator
Covers are your first line of defence. But not just any old tarp will do.
Selecting the Right Generator Cover for Your Specific Model
Pick a weather-resistant cover made for your generator’s make and size. It should fit snugly, keep rain out, and still let the air flow.
Avoid cheap, floppy covers—they won’t cut it in wild Aussie weather.
The Benefits of a Generator Tent for All-Weather Protection
Generator tents are purpose-built to handle rain, wind, and more. You can even run the generator while it’s inside one—just make sure the ventilation’s solid.
They’re a bit pricier but worth it for peace of mind.
How to Run Generator in Rain Safely: Addressing Operational Considerations
If you’ve got to run your generator while it’s raining, do it the safe way.
Understanding Safe Distances and Ventilation with a Generator Cover While Running
Never enclose the generator completely. It needs airflow to stay cool and to vent exhaust gases. Keep it one metre clear on all sides.
A breathable, water-resistant canopy can shield it without suffocating it.
Homemade Generator Cover While Running: DIY Solutions and Safety Cautions
You can rig a DIY cover using PVC pipes and heat-safe tarps—but it’s not without risk.
Make sure it’s stable, open, and allows full airflow. And don’t forget—no plastic near hot exhausts.
Strategic Placement: Minimising Risk of Water Ingress into Your Generator
Good location is half the battle.
Elevating Your Generator to Avoid Standing Water and Flooding
Use a pallet, concrete slab, or generator pad to keep it off the ground. That extra height helps prevent puddles from creeping in.
Even a few inches can make all the difference during a storm.
Choosing a Location Away from Runoff and Potential Water Sources for Your Generator
Place your generator somewhere high and dry. Avoid spots where water collects—like under gutters, near downpipes, or at the bottom of a slope.
If your backyard turns into a lake every wet season, you’ll want to pick the driest island.
Can I Shower with a Generator?
You can shower with a generator, but only if the system is set up safely and the generator is properly sized. Electric showers need large generators, while gas or solar systems are much easier to run. Safe placement and ventilation are essential to avoid electrical and carbon monoxide risks.
How Do You Dry Out a Generator?
If a generator gets wet, disconnect it and move it to a dry area before inspecting and drying it thoroughly. Use airflow and time to dry internal parts, and never restart it while moisture remains. Prevent future damage by using proper covers and storing the generator in a dry, ventilated place.
How Do I Protect My Generator from Flooding?
Keeping a generator safe during floods starts with smart placement, such as elevating it above flood levels, choosing high ground, and improving drainage so water flows away from the unit. Strong platforms, anchoring systems, and weatherproof enclosures add extra protection, while proper ventilation ensures the generator can still operate safely. Fuel systems should also be raised and secured to prevent contamination, and electrical disconnection is essential during flooding to avoid dangerous hazards. A layered approach that combines preparation, protective equipment, and quick recovery steps gives the best chance of keeping power available during severe weather.
What Happens if My Generator Floods?
A flooded generator can become dangerous fast, since water in electrical or engine components may cause shocks, short circuits, or severe internal damage. The safest response is to shut off power and fuel immediately, then drain contaminated fluids and dry the unit thoroughly before attempting any restart. Issues like hydro-lock, corrosion, or damaged electronics often require professional inspection because hidden moisture can lead to costly failures later. Preventive steps such as elevating the unit and using proper protective enclosures help reduce the risk of future water damage and extend the generator’s lifespan.
Conclusion: Proactive Measures and Swift Action Safeguard Your Generator
Generators might be tough, but they’re not waterproof warriors. One rainy day can knock them out if you’re not careful.
Act fast when water gets in. Dry it properly. And most importantly—plan ahead to keep it safe from future drenchings.
A little prep now can save you a lot of stress (and cash) later.
You may also like:
About the author:
“What I love most about getting outdoors is switching off and hitting reset. I used to spend my weekends legging it out from under a roof—now I help others do the same.”
