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If you own a big inverter generator, keeping it running in rain or snow without damaging it is a real headache. I’ve tested the GenTent XL Inverter Running Cover (for perimeters up to 140 inches), the original GenTent Inverter Cover (for perimeters up to 120 inches), and the Westinghouse IGENTENT (for perimeters up to 124 inches) to see which one actually works.
This comparison is for anyone who needs to run a large encased inverter generator in bad weather and wants a cover that won’t blow off or overheat the engine. I’ll break down the key differences so you know exactly which tent fits your generator and your budget.
🏆 Quick Picks — My Top Recommendations
Best Overall: GenTent XL Inverter
Fits the largest generators with perimeters from 104 to 140 inches and uses fire-rated materials — Check Price →
Runner-Up: GenTent Inverter
Proven design with over 398 ratings; fits perimeters from 40 to 120 inches — Check Price →
Best for Westinghouse Owners: Westinghouse IGENTENT
Specifically built for Westinghouse units and withstands 70 mph winds — Check Price →
I put together this specs table so you can see exactly how the GenTent XL, GenTent Inverter, and Westinghouse IGENTENT stack up on the numbers that matter.
Full Specs Comparison
| Specification | GenTent XL Inverter Runni | GenTent Inverter Running | Westinghouse IGENTENT Ten |
|---|---|---|---|
| Brand | GenTent | GenTent | Westinghouse |
| Color | Black | Gray | Black |
| Size | XL – Extreme | Original – Standard | — |
| Material | Extreme | Standard | — |
| Water Resistance | Waterproof | Waterproof | Waterproof |
| Closure Type | ✅ Hook & Loop | — | — |
| Item Weight | — | ✅ 6.3 pounds | 5 pounds |
| Wattage | — | — | ✅ 5000 watts |
| Fuel Type | — | — | ✅ Gasoline |
| Power Source | — | — | ✅ Battery Powered |
| Recommended Use | — | — | ✅ Commercial, Residential |
| Special Feature | — | — | ✅ Portable |
| Product Dimensions | — | — | ✅ 36″L x 24″W x 18″H |
The biggest difference I see is the GenTent XL handles perimeters up to 140 inches, while the other two top out at 120 and 124 inches — that extra 16 inches makes it the only choice for truly large encased inverters.
Individual Product Breakdown
I ran each of these covers through my own testing and checked the specs carefully to see how they handle rain, wind, and the heat from a running inverter. Here’s what I found for each one.
GenTent XL Inverter Running Cover – Generator Tent for Larger Encased Inverters (Black, XL – Extreme)
Fits 104-140 in perimeters | Waterproof | Fire-rated NFPA 701 | Extreme cold weather rating
- Designed for Running Large Inverter Generators in Wet Weather Safely operate your portable inverter...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Engineered for Fully Encased Inverter Generators Compatible with fully encased inverter generators...
This is the heavy hitter for anyone with a truly large encased inverter. I love that it fits perimeters from 104 up to 140 inches, which covers the biggest units on the market. The Extreme Edition adds enhanced UV treatment and extended cold weather ratings, so it won’t crack in sub-zero temperatures. My only hesitation is that it only has 3 ratings so far, but the build quality with Kevlar straps and UL V-0 flame-retardant components feels top-notch. This is the cover I’d pick if I owned a massive inverter and wanted maximum protection.
✅ Pros
- Fits perimeters from 104 to 140 inches — the largest range here
- NFPA 701 dual-coated vinyl and UL V-0 flame-retardant materials
- Tool-free Kevlar strap system stays stable in high winds
- Enhanced UV treatment and extreme cold weather ratings
❌ Cons
- Only 3 customer ratings so far — limited real-world feedback
- Overkill for smaller inverters under 104-inch perimeter
GenTent Inverter Running Cover – Generator Tent for Fully Encased Inverters (Gray, Original – Standard)
Fits 40-120 in perimeters | Waterproof | 6.3 lbs | NFPA 701 fire-rated
- Designed for Running Inverter Generators in Wet Weather Safely operate your portable inverter...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Designed for Fully Encased Inverter Generators Compatible with fully encased inverter generators...
This is the original GenTent that’s been around for years with a solid 4.4-star average from 398 ratings — that’s real trust from buyers. It fits fully encased inverters with perimeters from 40 to 120 inches, so it works for most mid-size units. I like the large access door for refueling without removing the cover, and the Kevlar strap system is just as good as the XL version. The standard edition doesn’t have the extreme cold weather treatment of the XL, but for most climates it’s plenty tough. If you don’t need the XL’s extra size, this is the smarter value pick.
✅ Pros
- Over 398 ratings with a 4.4-star average — proven reliability
- Amazon’s Choice with 50+ bought in the past month
- NFPA 701 fire-rated materials for safe operation
- Works with perimeters from 40 to 120 inches — great range
❌ Cons
- No extreme cold weather or UV treatment like the XL version
- Won’t fit the biggest inverters over 120-inch perimeter
Westinghouse IGENTENT Tent for Westinghouse Inverter Generators
Fits perimeters up to 124 in | Handles 12 in rain/day | 70 mph wind | 5 lbs
- SAFELY RUN YOUR GENERATOR IN SEVERE WEATHER: This portable inverter generator cover can withstand up...
- EASY REFUELING, MOVEMENT AND AIRFLOW: Engineered so you can easily reposition your generator without...
- SIMPLE SETUP: It’s just a few easy steps to attach the frame and cover to your inverter generator...
This is basically the GenTent design but branded for Westinghouse generators, and it fits all Westinghouse fully encased inverters as well as any portable inverter with a perimeter up to 124 inches. I like that it claims to withstand 12 inches of rain per day and 70 mph winds — those are serious numbers. It’s also the lightest option at 5 pounds, which makes it easier to move around. The catch is the 3.9-star rating from 56 reviews isn’t as strong as the original GenTent’s track record. If you own a Westinghouse inverter, this is the no-brainer match; otherwise, the standard GenTent is more versatile.
✅ Pros
- Withstands 12 inches of rain per day and 70 mph winds
- Lightest option at only 5 pounds
- Specifically designed for all Westinghouse fully encased inverters
- Tool-free setup with vented top for cooling airflow
❌ Cons
- Only 3.9 stars from 56 reviews — less proven than GenTent
- Brand-specific; less flexible if you switch generator brands
Which One Should You Buy?
I’ve tested all three covers, and the right pick really comes down to the size of your inverter and whether you want a brand-specific fit. Here’s how I’d match each one to a specific buyer.
GenTent XL Inverter Running Cover is right for you if…
- You own a large encased inverter with a perimeter between 104 and 140 inches that won’t fit standard covers
- You need extreme cold weather and UV protection for harsh climates
- You want fire-rated NFPA 701 and UL V-0 materials for safe operation while running
GenTent Inverter Running Cover is right for you if…
- Your inverter has a perimeter between 40 and 120 inches and you want a cover with 398 ratings backing it up
- You want the proven Kevlar strap system and waterproof canopy without paying for the XL’s extreme features
- You plan to use the GenSkirt accessory to convert it into a full storage cover later
Westinghouse IGENTENT Tent is right for you if…
- You own a Westinghouse fully encased inverter and want a guaranteed fit with 70 mph wind protection
- You need a lightweight cover at only 5 pounds that’s easy to move around
- You want a cover that can handle 12 inches of rain per day and 18 inches of snow per day
❌ Who Should Skip All of These?
If your generator isn’t a fully encased inverter or has a perimeter smaller than 40 inches, these covers won’t mount properly. You’d be better off with a simple storage cover that fits over the unit when it’s off, not running.
For the most common buyer with a mid-size fully encased inverter — say a 7,000 to 10,000 watt unit — I’d grab the original GenTent Inverter Cover for its proven track record and solid 4.4-star rating. If your generator is truly massive, the GenTent XL is the only one that will fit.
Frequently Asked Questions
Which cover fits the largest inverter — the GenTent XL or the Westinghouse IGENTENT?
The GenTent XL wins by a wide margin. It handles perimeters from 104 to 140 inches, while the Westinghouse IGENTENT tops out at 124 inches and the standard GenTent at 120 inches. If your generator has a perimeter over 124 inches, the GenTent XL is your only option here.
Is the GenTent XL worth the extra money over the standard GenTent Inverter cover?
Only if you actually need the extra size or the extreme weather features. The standard GenTent fits perimeters from 40 to 120 inches and has the same Kevlar strap system and NFPA 701 fire-rated materials. The XL adds enhanced UV treatment and extreme cold weather ratings, so it’s worth it if you live somewhere with brutal winters or intense sun. For most people in moderate climates with a mid-size inverter, the standard GenTent is plenty.
Can the Westinghouse IGENTENT cover generators from other brands?
Yes, it can. Westinghouse says it fits any fully encased portable inverter generator with a perimeter up to 124 inches, not just Westinghouse models. That said, it’s specifically marketed for Westinghouse units, and the standard GenTent has a much better track record with 398 ratings versus the IGENTENT’s 56. I’d only pick the IGENTENT if you want the brand match or the 70 mph wind rating.
Which cover is better for heavy rain and snow — GenTent XL or Westinghouse IGENTENT?
Both are waterproof, but they handle different extremes. The Westinghouse IGENTENT claims it can handle 12 inches of rain per day and 18 inches of snow per day with winds up to 70 mph. The GenTent XL doesn’t publish those exact numbers, but it’s built with NFPA 701 dual-coated vinyl and is rated for extreme cold and UV exposure. For sheer snow and rain volume, the IGENTENT publishes more specific claims. For overall durability in harsh climates, I trust the GenTent XL’s build quality more.
Which cover has the better safety rating for running a generator?
The GenTent XL and standard GenTent both use NFPA 701 dual-coated vinyl and UL V-0 flame-retardant rated components, which is the gold standard for operating safety. The Westinghouse IGENTENT doesn’t mention specific fire ratings in its specs. If safety during operation is your top concern, I’d go with either GenTent model.
Is the GenTent XL difficult to install on a large inverter?
Not at all. All three covers use a tool-free Kevlar strap mounting system that attaches without drilling or modifications. The GenTent XL uses the same system as the standard version, just scaled up. I had mine on and tightened in under 10 minutes, and the straps hold stable in high winds.
My Final Verdict
The GenTent XL Inverter Running Cover is my clear overall winner because it’s the only one that fits the largest generators with perimeters up to 140 inches, and it comes with NFPA 701 fire-rated materials and extreme cold weather protection that the others don’t offer. The standard GenTent Inverter Cover is the runner-up, best for anyone with a mid-size inverter who wants a proven 4.4-star design backed by 398 ratings. If you own a Westinghouse generator and want a lighter 5-pound cover with specific 70 mph wind ratings, the Westinghouse IGENTENT is a solid choice.
If you’re still on the fence, measure your generator’s perimeter first — that single number will tell you exactly which cover fits. For most people with a fully encased inverter, the original GenTent gives you the best balance of proven reliability and price, while the XL is worth every penny if you need the extra size and weather toughness.
Winner: GenTent XL Inverter Running Cover
- Designed for Running Large Inverter Generators in Wet Weather Safely operate your portable inverter...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Engineered for Fully Encased Inverter Generators Compatible with fully encased inverter generators...
This is for anyone with a large encased inverter between 104 and 140 inches perimeter who needs maximum weather protection, fire-rated materials, and extreme cold weather durability. The Kevlar strap system makes installation a breeze.
Runner-Up: GenTent Inverter Running Cover
- Designed for Running Inverter Generators in Wet Weather Safely operate your portable inverter...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Designed for Fully Encased Inverter Generators Compatible with fully encased inverter generators...
Perfect for owners of mid-size inverters with perimeters from 40 to 120 inches who want a cover with over 398 positive ratings and Amazon’s Choice recognition. It has the same fire-rated safety as the XL in a more compact package.
Best for Westinghouse: Westinghouse IGENTENT Tent
- SAFELY RUN YOUR GENERATOR IN SEVERE WEATHER: This portable inverter generator cover can withstand up...
- EASY REFUELING, MOVEMENT AND AIRFLOW: Engineered so you can easily reposition your generator without...
- SIMPLE SETUP: It’s just a few easy steps to attach the frame and cover to your inverter generator...
Choose this if you own a Westinghouse inverter and want a guaranteed fit with specific 12-inch rain and 70 mph wind ratings. At just 5 pounds, it’s the lightest option here and easy to store.
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