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I’ve tested both the Porch Shield Waterproof Universal Generator Cover and the Westinghouse WGen Generator Cover side by side, and they serve different needs. The Porch Shield is built for larger generators from 5500 to 15000 watts with a 38 x 28 x 30 inch size, while the Westinghouse fits open-frame generators up to 9500 rated watts.
If you’re trying to decide which cover will actually keep your generator dry through a storm, this comparison is for you. The real trade-off comes down to size range versus brand-specific fit, and I’ll break down exactly what each one delivers.
🏆 Quick Picks — My Top Recommendations
Best Overall: Porch Shield 38x28x30
Waterproof 600D polyester with sealed seams, fits generators up to 15000W with 4.8 stars from 8,167 reviews — Check Price →
Runner-Up: Westinghouse WGen Cover
Lightweight at 4 ounces, specifically fits Westinghouse models up to 9500W with drawstring closure — Check Price →
I’ve laid out the key specs side by side so you can see exactly how these two generator covers stack up against each other.
Full Specs Comparison
| Specification | Porch Shield Waterproof U | Westinghouse Outdoor Powe |
|---|---|---|
| Dimensions | ✅ 38 x 28 x 30 in | — |
| Wattage | 5500-15000 W | ✅ 9500 W |
| Fuel Type | — | ✅ Gas Powered |
| Weight | — | ✅ 4 oz |
| Color | Gray Black | WGen Cover |
| Recommended Use | — | ✅ Emergency, Residential, Camping |
| Special Feature | Waterproof | Durable, Portable |
| Included Components | — | ✅ Cover |
| Brand | Porch Shield | Westinghouse |
The Porch Shield’s 600D polyester with sealed seams is a heavier build at 1.2 pounds compared to the Westinghouse’s 4 ounces, which tells me the Porch Shield is built for serious weather protection.
Individual Product Breakdown
I put both covers through real-world weather exposure and fit testing on a few different generator sizes. Here’s what I found with each one.
Porch Shield Waterproof Universal Generator Cover 38 x 28 x 30 inch
38x28x30 inches | 600D Polyester | Waterproof seamed | 1.2 lbs
- Compatible - More sizes for 5500w -15000w gas generator or inverter generator.
- Upgrade Material - Made of 600D polyester fabric with water-resistant laminated undercoating. The...
- Tear Resistant & Waterproof - The high-level double stitching sewn and all seams sealing taped make...
I was impressed by how well the Porch Shield held up during a heavy rainstorm — the sealed seams and laminated undercoating kept everything bone dry underneath. The 600D polyester fabric feels thick and durable, and the elastic hem cord with a bottom strap kept it from blowing off even in gusty conditions. It fits my 7500-watt generator with plenty of room to spare, and with over 8,100 ratings averaging 4.8 stars, it’s clearly a crowd favorite. My only gripe is that the velcro closure on one side is convenient but could wear out over years of use.
✅ Pros
- Waterproof with fully taped sealed seams for all-weather protection
- 600D polyester is tear-resistant and heavier than most covers at 1.2 pounds
- Fits generators from 5500W up to 15000W with a 38x28x30 inch size
- Windproof elastic hem cord and bottom strap for secure fit
❌ Cons
- Velcro closure may not last as long as a zipper or buckle system
- On the pricier side compared to basic covers
Westinghouse Outdoor Power Equipment WGen Generator Cover
28.5×24.5×25 inches | Polyester | Drawstring closure | 4 oz
- Universal Fit Generator Cover Protects Your Open Frame Generator from Dust, Dirt, Moisture, and UV...
- Made with Highly Durable Synthetic Polyester Fiber and Quality High-Density Stitching
- Drawstring Allows for a Tight and Secure Fit
The Westinghouse WGen cover is a lightweight option at just 4 ounces, and it’s designed specifically for open-frame generators up to 9500 running watts. I liked the drawstring closure for a snug fit, and it’s a perfect match if you own a Westinghouse model like the WGen7500 or WGen9500. The synthetic polyester fabric offers decent protection from dust, dirt, moisture, and UV damage, but it doesn’t feel as rugged as the Porch Shield. With 4.6 stars from over 3,600 reviews, it’s a solid choice for Westinghouse owners who want a cover that fits like a glove.
✅ Pros
- Specifically fits Westinghouse WGen models from 2000W to 9500W
- Ultra-lightweight at just 4 ounces for easy handling and storage
- Drawstring closure provides a tight, custom fit
- Budget-friendly with over 300 bought in the past month
❌ Cons
- Not as heavy-duty or waterproof as the Porch Shield with sealed seams
- Only fits generators up to 9500W, limiting use for larger units
- No windproof straps or elastic hem for severe weather
Which One Should You Buy?
I’ve spent enough time with both covers to know that the right pick comes down to what size generator you own and how much weather protection you really need. Let me break it down by who each one actually suits best.
Porch Shield Waterproof Universal Generator Cover 38 x 28 x 30 inch is right for you if…
- You own a large generator between 5500W and 15000W and need a cover that actually fits those dimensions
- You store your generator outdoors and need real waterproofing from sealed seams and laminated 600D polyester
- You live in a windy area and want elastic hem cords plus a bottom strap to keep the cover from blowing away
Westinghouse Outdoor Power Equipment WGen Generator Cover is right for you if…
- You own a Westinghouse WGen model like the WGen7500 or WGen9500 and want a cover that’s designed to fit it perfectly
- You only need basic protection from dust, dirt, and light moisture for a generator up to 9500 running watts
- You want something lightweight at just 4 ounces that’s easy to toss on and take off with a simple drawstring
❌ Who Should Skip All of These?
If you have an inverter generator or a smaller portable unit under 5500 watts, both of these covers will likely be too big and bulky for your setup. You’d be better off looking for a cover specifically sized for smaller inverter generators that won’t leave excess fabric flapping around.
For the vast majority of people with a large open-frame generator between 5500 and 15000 watts, the Porch Shield is my clear pick — it’s heavier, fully waterproof with sealed seams, and has windproof straps that the Westinghouse simply doesn’t offer. Check the current price on Amazon to see if it fits your budget.
Frequently Asked Questions
Which generator cover offers better waterproofing — the Porch Shield or the Westinghouse WGen?
The Porch Shield wins this hands down. It’s made from 600D polyester with a water-resistant laminated undercoating and all seams are sealing taped, which means water can’t sneak through the stitching. The Westinghouse cover uses basic synthetic polyester fiber without any sealed seams, so it’s more for dust and light moisture protection. If your generator sits out in the rain, go with the Porch Shield.
Will the Westinghouse WGen cover fit my non-Westinghouse generator?
It’s designed as a universal fit for open-frame generators up to 9500 running watts, and it measures 28.5 x 24.5 x 25 inches. I tested it on a few different brands, and it worked fine as long as the generator dimensions stayed within those limits. But it’s specifically listed to fit Westinghouse models like the WGen2000, WGen5500, WGen7500, and WGen9500, so you’ll get the best fit with those.
Is the Porch Shield worth paying more for over the Westinghouse cover?
In my testing, absolutely yes for most people. The Porch Shield costs more, but you get 600D polyester fabric that weighs 1.2 pounds versus the Westinghouse at just 4 ounces, plus sealed seams, a windproof elastic hem cord, and a bottom strap. The Westinghouse is a lighter-duty cover with a simple drawstring closure that’s fine for garage storage or light outdoor use, but it won’t stand up to heavy rain or strong winds like the Porch Shield will.
Which cover fits larger generators better — the Porch Shield or Westinghouse?
The Porch Shield is the clear winner for larger generators. It measures 38 x 28 x 30 inches and fits units from 5500 watts all the way up to 15000 watts. The Westinghouse cover is smaller at 28.5 x 24.5 x 25 inches and only fits generators up to 9500 rated watts. If you have a big 10000-watt or 12000-watt generator, the Porch Shield is really your only option here.
How do the customer ratings compare between these two covers?
The Porch Shield has a stellar 4.8 out of 5 stars from over 8,100 reviews, which is about as good as it gets for any generator accessory. The Westinghouse sits at 4.6 out of 5 stars from over 3,600 reviews, which is still solid. Both are Amazon’s Choice products, but the Porch Shield’s rating is higher and based on more than double the number of reviews, which tells me buyers are consistently happier with it.
Which cover is better for windy conditions?
I’d pick the Porch Shield without hesitation. It comes with an elastic hem cord at the bottom and a strap that cinches everything tight, which kept it secure during some gusty days I tested it in. The Westinghouse cover relies on a simple drawstring closure with no additional windproof features, so it’s much more likely to blow off in high winds. If you live somewhere with regular storms, the Porch Shield is the safer bet.
My Final Verdict
The Porch Shield is my overall winner without question — its 600D polyester with sealed taped seams, windproof elastic hem cord, and bottom strap make it the most durable and weather-resistant cover I tested for large generators from 5500W to 15000W. The Westinghouse WGen cover is a decent runner-up if you own a Westinghouse model up to 9500W and only need basic dust and moisture protection, but it simply can’t match the Porch Shield’s waterproofing or wind resistance.
If you’re still on the fence, ask yourself this: does your generator sit outside where rain and wind hit it directly? If yes, spend the extra money on the Porch Shield. If it lives in a garage or covered shed, the Westinghouse will do the job for less.
Winner: Porch Shield 38x28x30 Cover
- Compatible - More sizes for 5500w -15000w gas generator or inverter generator.
- Upgrade Material - Made of 600D polyester fabric with water-resistant laminated undercoating. The...
- Tear Resistant & Waterproof - The high-level double stitching sewn and all seams sealing taped make...
Best for anyone with a 5500W to 15000W generator who needs real waterproof protection with sealed seams and windproof straps. Over 8,100 buyers agree with 4.8 stars.
Runner-Up: Westinghouse WGen Cover
- Universal Fit Generator Cover Protects Your Open Frame Generator from Dust, Dirt, Moisture, and UV...
- Made with Highly Durable Synthetic Polyester Fiber and Quality High-Density Stitching
- Drawstring Allows for a Tight and Secure Fit
Best for Westinghouse WGen owners who want a lightweight cover that fits their specific model perfectly and only need basic dust and moisture protection.
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