10 Best Outdoor Generator Covers 2025 in the United States

The Porch Shield Running Generator Cover is designed to protect medium to large generators (3500w-12000w) while they are running. Its heavy-duty 600D PVC polyester material is a big plus because it’s more tear-resistant and waterproof than many covers, offering solid protection against rain, snow, dust, and UV rays. The double-stitched seams and water-repellent coating enhance durability and keep your generator dry.

Size-wise, it fits generators up to about 36 x 28 x 20 inches, which should cover most models in its power range comfortably while allowing access to plugs. The integrated pole system means you can simply unfold and position it without complicated assembly, which makes it easy to use. Adjustable nylon ties and Velcro locks help secure the cover firmly in place, preventing it from shifting in wind.

Weighing 7.24 pounds, it is relatively heavy compared to simpler covers, which might affect portability. If you want a robust, water-resistant generator shelter that’s quick to set up and durable for outdoor use, Porch Shield is a strong choice, especially if you prioritize protection from rain and UV without fussing over assembly.

The GenArmor Generator Cover is designed to protect outdoor generators from harsh weather, especially rain, thanks to its 100% waterproof heavy-duty tarpaulin material paired with a sturdy metal frame. This combination offers strong durability and stability, even in windy conditions, making it a reliable choice for protecting generators between 4000w and 13000w. The integrated frame and fabric bolt design help keep the cover securely in place, which is great for maintaining coverage without constant adjustments.

Its size (34.5 x 26.5 x 19 inches) fits a wide range of generator models, and the open closure design allows quick refueling and easy access to controls, which can save time during operation. The cover is also black, providing some UV protection. Weighing around 13 pounds, it is portable but might require some effort to set up initially.

This cover is well-suited for outdoor generator owners seeking a strong, weather-resistant shelter that is reliable during use, though those needing detailed UV protection or very lightweight options might consider alternatives.

The Westinghouse WGenTent is designed to protect open frame portable generators from severe weather conditions, making it a dependable shelter for your generator outdoors. It is made from waterproof vinyl fabric, ensuring your generator stays dry even during heavy rain (up to 12 inches per day) or snowfall (up to 18 inches per day). The cover also withstands strong winds up to 70 mph, providing extra peace of mind during storms.

One of the standout features is its vented top, which helps keep your generator cool by allowing airflow—this prevents overheating without needing to remove the cover. The size (36 x 24 x 18 inches) fits many open frame generators comfortably, and adjustable straps help secure it in place. The refueling door is a convenient addition, letting you refill fuel without taking the cover off, saving time and keeping the generator protected. Assembly is straightforward and tool-free, ideal for quick setup in emergencies. The product’s moderate weight (4.4 pounds) means it is portable yet sturdy.

Backed by a 1-year warranty and strong customer support from Westinghouse, this cover is well-suited for anyone who needs reliable weather protection for an open frame generator, especially in unpredictable outdoor conditions.