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Westinghouse WGen7500c vs Generac XT8500EFI

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

  • Model #7247 XT8500EFI
    Model #7247 XT8500EFI

    Generac 8,500W Gas Generator

    8500W
    Running
    0 dB
    Noise
    View details
  • Model WGen7500c
    Model WGen7500c

    Westinghouse 7,500W Gas Generator

    7500W
    Running
    72 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationGenerac #7247 XT8500EFIWestinghouse WGen7500c
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
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 gaugeYesYes
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 outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
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
GasolineNot availableNot 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 arrestorYesYes
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 ProtectionYesYes
Carbon Monoxide MonitoringYesYes
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 Powerful
    Generac #7247 XT8500EFI
    8500W running
  • Quietest
    Westinghouse WGen7500c
    72 dB
  • Longest Runtime
    Westinghouse WGen7500c
    11h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #7247 XT8500EFI
Store links
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Westinghouse WGen7500c
Store links
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