
Westinghouse WGen7500c vs Generac XT8500EFI
Comparing the Westinghouse WGen7500c and Generac XT8500EFI portable generators. See how 7500 vs 8500 running watts, EFI technology, and runtime stack up.
- Generac #7247 XT8500EFI
- Westinghouse WGen7500c
Comparison Overview
The Generac XT8500EFI delivers 8500 running watts and 10,000 starting watts, giving it a meaningful power advantage over the Westinghouse WGen7500c's 7500 running watts and 9500 starting watts. That extra 1,000 running watts can make a real difference when you're powering multiple large appliances or tools simultaneously. The Generac also features Electronic Fuel Injection (EFI), which improves fuel efficiency and makes cold starts more reliable compared to a traditional carbureted engine.
The Westinghouse WGen7500c fights back with superior runtime. At 50% load, it runs for 11 hours compared to the Generac's 9 hours, and at 25% load it stretches to an impressive 16 hours. It's also lighter at 197 pounds versus the Generac's 214 pounds, which matters when you need to move the unit around. The Westinghouse also edges ahead in overall scoring at 6.40 compared to the Generac's 6.03, and it operates at a listed 72 dB noise level. Both generators carry a 3-year warranty and run on gasoline.
If you need maximum wattage and appreciate the convenience of EFI technology, the Generac is the stronger pick. If longer runtime per tank and a lighter, easier-to-handle unit matter more, the Westinghouse is the better fit.
Key takeaways
- Generac XT8500EFI provides 8500 running watts, 1000 more than the Westinghouse's 7500
- Westinghouse WGen7500c runs up to 16 hours at 25% load for extended outages
- Generac features Electronic Fuel Injection for easier starts and less carburetor maintenance
- Westinghouse weighs 197 pounds, about 17 pounds lighter than the 214-pound Generac
- Both generators include a 3-year warranty and run on gasoline
- Westinghouse scores 6.40 overall compared to the Generac's 6.03
Best use cases
Choose the Westinghouse WGen7500c if you need a home backup generator that can run through extended power outages without constant refueling. Its 16-hour runtime at 25% load means you can keep essentials like your refrigerator, lights, and a few smaller appliances running overnight on a single tank. At 197 pounds, it's also easier to reposition around your property or load into a truck bed. The 7500 running watts are more than enough for most residential backup scenarios where you're selectively powering circuits rather than your entire panel. It's a solid choice for homeowners in storm-prone areas who value endurance and portability over raw output.
Choose the Generac XT8500EFI if you need to power heavier loads, whether that's a job site with multiple power tools, a large home with high-draw appliances, or events requiring substantial electrical capacity. The 8500 running watts and 10,000 starting watts give you more headroom to handle demanding startup surges from equipment like well pumps, large air conditioners, or table saws. The EFI system is a genuine advantage for reliability. There's no carburetor to gum up during storage, and the engine adjusts its fuel mixture automatically, which means easier starts in cold weather and generally less maintenance fuss over time.
Both generators are conventional (non-inverter) models, so neither is ideal for sensitive electronics like laptops or medical devices without a separate surge protector or power conditioner. They're also both firmly in the "loud" category, so don't expect quiet campground operation from either one. The tradeoff here is straightforward: more power with the Generac, or longer runtime and lighter weight with the Westinghouse.
Verdict & recommendation
If your priority is maximum power output and low-maintenance fuel delivery, the Generac XT8500EFI's 8500 running watts and EFI engine make it the more capable workhorse. If you'd rather have longer runtime between fill-ups and a unit that's easier to move, the Westinghouse WGen7500c's 16-hour runtime at quarter load and 17-pound weight savings are practical advantages that add up over time.
Neither generator is a bad choice. They share the same warranty length, fuel type, and conventional generator design. The decision really comes down to whether you need more watts or more hours per tank. For heavy-duty job sites and large homes, lean toward the Generac. For extended outages and general home backup where 7500 watts is sufficient, the Westinghouse offers a well-rounded package with better endurance.
Last updated March 15, 2026
| Specification | Generac #7247 XT8500EFI | Westinghouse WGen7500c |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 8500 W | 7500 W |
| Starting watts | Winner: Winner: 10000 W | 9500 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 72 dB |
| Weight | 214 lbs | Winner: Winner: 197.1 lbs |
| Run time @50% load | 9 h | Winner: Winner: 11 h |
| Run time @25% load | Not available | 16 h |
| Fuel tank | 8 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 31.4 x 20.5 x 26.5 | 27.2 x 26.1 x 26 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 5 % | 23 % |
| Engine | ||
| Engine | Generac OHV 4-stroke | Westinghouse OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Not available |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8500 W | 7500 W |
| Starting watts | 10000 W | 9500 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 9 h | 11 h |
| Run time @25% load | Not available | 16 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 696471078336 | 850011336687 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8500 | 7500 |
| Starting Watts (Gasoline) | 10000 | 9500 |
| Runtime @ 50% Load (Gasoline) | 9 | 11 |
| Runtime @ 25% Load (Gasoline) | Not available | 16 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 459 | 420 |
| Cylinder Sleeve | Not available | cast iron sleeve |
| Engine Oil Type | 10W-30 / SAE 30 | SAE 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 16 |
| Runtime @ 50% Load (Gasoline) | 9 | 11 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Mobility Components | Not available | Yes |
| Starting Components | Oil, funnel, battery charger, battery | Not available |
| Included Accessories | Oil, funnel, battery charger, battery, and wheel kit | Oil, funnel, tool kit, key fob, battery charger, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Generac XT8500EFI is an 8,500-watt gasoline generator built for whole-house backup and job site power. With 10,000 starting watts, it can simultaneously run a central air conditioner, refrigerator, sump pump, and lighting circuits, or power multiple heavy-draw tools on a work site. Electronic fuel injection delivers consistent performance and fuel economy, while the 8-gallon tank and 9-hour runtime at 50% load mean a full workday or overnight outage before refueling. | The Westinghouse WGen7500c is a portable generator designed for home backup power, offering 7,500 running watts and 9,500 peak watts. It features a 420cc 4-Stroke OHV engine, push-button electric start with remote key fob, and a CO sensor for safety. |
- Most PowerfulGenerac #7247 XT8500EFI8500W running
- QuietestWestinghouse WGen7500c72 dB
- Longest RuntimeWestinghouse WGen7500c11h at 50% load


