Best Covers and Enclosures for Running a Generator in the Rain

To safely run a generator in the rain, you need a weatherproof cover or enclosure that keeps water out while letting heat and fumes escape. A good cover can prevent electrocution, internal damage, and even total failure of your generator—while keeping you from standing outside with a tarp like a lunatic.

I’ve tested a handful and researched dozens. Below are the best generator covers and enclosures that actually work in wet conditions, plus what to avoid.

For most generators, a canopy like this one will do the trick nicely.

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✅ What Makes a Good Generator Cover?

You’re looking for three things:

• Protection from water: It must shield outlets, the control panel, and the engine area.
• Ventilation: Without airflow, your generator will overheat or fill the enclosure with fumes.
• Ease of access: You need to refuel, flip switches, and check for issues without disassembling a mini-fortress.

If it can survive sideways rain, wind gusts, and your dog running into it at full speed, even better.

Want a full guide on when and how to run a generator in wet conditions? Start here: How to Run a Generator in the Rain (And Not Ruin It)

Best Store-Bought Covers

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1. GenTent Safety Canopy

Best for: Long-term use and safety compliance

• Rated for 70+ mph winds
• Fits open-frame generators
• OSHA-compliant and NFPA 70E rated

✅ Why it’s solid: It’s expensive but engineered like a tank. A favorite for contractors or anyone in flood zones.

Check Latest Price on Amazon

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2. IGAN Generator Tent Running Cover

Best for: All-purpose home backup

• Fits most 3500W to 12000W portable generators
• Withstands heavy rain and high wind
• Frame stays up while generator is running

✅ Why I like it: This is the one I use. Quick to set up, keeps things dry, and I’ve run it through hurricanes (well, almost).

Check Latest Price on Amazon

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3. Champion Storm Shield Cover Kit

Best for: Champion generators and similar designs

• Heavy-duty frame and waterproof canopy
• Compatible with inverter and standard generators
• Easy refueling access flaps

✅ Best value if you already have a Champion generator—but double-check your model size.

Check Latest Price on Amazon

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🛠️ DIY Generator Enclosure Options

If you’re a hands-on type, you can build your own enclosure for much less.

A good DIY generator box can be made from plywood, aluminum sheeting, vent grilles, and some elbow grease. Just make sure it:

• Has cross ventilation
• Doesn’t trap exhaust
• Doesn’t overheat under load

For placement tips, don’t miss: Where Should You Put a Generator During Bad Weather?

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🚫 What to Avoid

• Plastic storage sheds: Sounds good, but they trap heat. Most aren’t ventilated and will overcook your engine.
• Tarp over a chair: Come on now. I’ve seen people prop up a tarp with broomsticks—don’t be that guy. Tarps blow away, leak at the seams, and pose a fire risk if too close.
• Fully enclosed boxes without ventilation: It’s not a wine cellar—it’s a machine that burns fuel.

And whatever you use, never operate a generator indoors or in a garage. Here’s why: Can You Use a Generator in a Garage With the Door Open?

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Final Thoughts

If you plan on using your generator in the rain, a proper cover is non-negotiable. Whether you go with a purpose-built tent or build your own enclosure, protecting the engine and outlets from moisture is what keeps you—and your generator—alive.

Personally, I use the IGAN tent and wouldn’t think twice about recommending it. But if you prefer DIY projects or already own a compatible shed, just make sure ventilation and safety are top priorities.

Stay dry, stay grounded, and don’t cheap out on something that can save your bacon during a blackout.

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Also See:

• What Happens If a Generator Gets Wet?
• Can You Use a Generator in a Storm or Hurricane?