Best Covers for Portable Generators: Protect Your Power on the Go
Protecting a portable generator from sun, rain, and dust extends its life and keeps it ready when you need it. This guide highlights five top covers that fit a range of generator sizes, with practical notes on who each cover is best for. If you own a mid-size to large generator, these options balance durability, weatherproofing, and a secure fit. The buying table below helps you compare at a glance.
| Product | Brand | Approximate Size | Best For |
|---|---|---|---|
| Porch Shield Waterproof Universal Generator Cover 38 x 28 x 30 inch | Porch Shield | 38″ x 28″ x 30″ | 5500–15000 W gas or inverter generators |
| Waterproof Generator Covers 32″L x 24″W x 24″H | REHOYEE | 32″ x 24″ x 24″ | 5,000–10,000 W generators |
| Porch Shield Waterproof Universal Generator Cover 32 x 24 x 24 inch | Porch Shield | 32″ x 24″ x 24″ | 5,000–10,000 W generators |
| Westinghouse Outdoor Power Equipment WGen Generator Cover | Westinghouse | Universal fit for portable models | Up to 9,500 W generators |
| TIAOFY Waterproof Universal Generator Cover | TIAOFY | 26″ x 20″ x 20″ | 3,000–15,000 W generators |
Note: Sizes and fits vary by model. Always measure your generator before purchasing, and consider whether you need extra room for handles or exhaust clearance.
Porch Shield 38x28x30 Inch Generator Cover
This 38″ x 28″ x 30″ cover is designed for 5500–15000 W gas or inverter generators. It uses 600D polyester with a water-resistant laminated undercoating to protect against sun, rain, wind, and dirt. Double stitching and taped seams increase tear resistance and waterproofing. Best for larger portable units used in variable weather. Caution: Ensure extra clearance for hoses or exhaust components when closed.
REHOYEE Waterproof Generator Cover 32x24x24
Designed for 5,000–10,000 W generators, this 32″ x 24″ x 24″ cover uses heavy-duty 900D Oxford fabric. It resists rain, wind, UV rays, and tearing, with double-stitched seams and an adjustable elastic hem for a snug, wind-resistant fit. Best for steady outdoor use in mixed climates. Caution: Some users report the need for extra width for certain generator accessories.
Porch Shield 32x24x24 Inch Generator Cover
This 32″ x 24″ x 24″ option targets 5,000–10,000 W units. It features 600D polyester with a water-resistant laminate, plus double-stitched seams and taped seals for enhanced waterproofing. Best for customers seeking a compact cover with proven weather resistance. Caution: Check interior clearance if a generator has bulky fuel cans or panels.
Porch Shield Inverter Generator Cover for EU Series
Specifically sized for inverter models like EU2200i or EU3200i, this cover emphasizes a snug wrap with an elastic band at the bottom and end rings for wind protection. Made of 600D polyester with waterproof undercoating, it protects against sun, rain, and dust. Best for compact, high-efficiency portable generators. Caution: Not all EU-series models fit every aftermarket modification—verify model compatibility.
Generator Cover 32x24x24 Inch, 600D Polyester
With universal fit for most 5000–10000 W generators, this cover uses premium 600D polyester and sealed seams for tear resistance and waterproofing. It also features an elastic drawstring and buckle design to secure the cover in windy conditions. Best for mid-sized generators that need robust protection. Caution: Some larger models may require a bigger size for full coverage.
Westinghouse WGen Generator Cover
Designed for open-frame portable generators up to 9,500 W, this cover emphasizes a universal fit with durable polyester fabric and high-density stitching. It includes a drawstring for a tight seal. Best for general outdoor use where a standard universal fit suffices. Caution: Elasticity may loosen in extreme heat; check fit after initial use.
TIAOFY Waterproof Universal Generator Cover
26″ x 20″ x 20″ fits many 3,000–15,000 W generators. It uses 600D Oxford fabric with a waterproof undercoating, plus double-stitched seams and taped seals for durability. The elastic hem and adjustable bottom strap provide a secure fit in windy conditions. Best for users needing a compact, weatherproof option. Caution: If your generator is taller than 20 inches, consider a larger size.
Buying Guide: How To Choose The Right Generator Cover
What size do I need? Start by measuring your generator’s length, width, and height with any attached hoses or mufflers. Choose a cover that leaves extra room for airflow and handles. If you own a larger unit, look for 38″ or wider models.
What material matters most? Heavy-duty polyester fabrics (600D–900D) with waterproof coatings offer the best weather resistance. Double stitching and sealed seams reduce tear risk and water intrusion.
Is a snug fit important? Yes. An elastic hem, drawstrings, and end rings improve wind resistance and keep the cover from shifting. Ensure there’s still space for ventilation to prevent moisture buildup.
Are there any special considerations for inverter generators? Inverter models can have tighter dimensions or protruding exhausts. Check the product’s compatibility notes and measure the unit to avoid overhang.
What about user climate and storage? For snowy or very windy environments, a larger cover with stronger seals helps. If you store indoors for part of the year, a lighter cover may suffice to protect from dust.
Frequently Asked Questions
- Will any cover fit all generators? No. Covers come in varied sizes; measure your unit and compare to the product dimensions.
- Do covers block air circulation? Many designs include breathable protection and ventilation considerations; avoid completely sealed enclosures to prevent moisture buildup.
- Are waterproof covers truly weatherproof? High-quality covers use laminated coatings and taped seams to resist rain, but prolonged exposure to harsh conditions can still wear materials over time.
- How do I secure a cover in high winds? Look for elastic hems, drawstrings, and end rings that snap around the base of the generator. Tie-downs may be needed in extreme climates.
- Can I use a cover with accessories attached? Some designs accommodate hoses and mufflers, but check clearances and choose a size that allows safe placement of any attachments.
- Should I remove a cover in hot weather? If the generator is actively running, allow it to cool and avoid leaving a cover on while in operation to prevent heat buildup.