Which generator delivers more running wattage, the XP15000EH or the iGen12000TFc?

DuroMax XP15000EH delivers higher continuous output with 12000 running watts on gasoline.

Is the XP15000EH quieter than the iGen12000TFc?

Westinghouse iGen12000TFc is quieter at 50% load, measured at 66.8 dBA at 23 feet.

Which model is better suited for a whole home transfer switch interlock?

Westinghouse iGen12000TFc features a factory floating neutral ready for standard transfer switch hookup without modification.

ReaLoadREVIEWS

Home Backup & Portable Power Guide

ReaLoad Engineering Benchmark

DuroMax XP15000EH vs. Westinghouse iGen12000TFc

Highlight Differences

Fuel Benchmark:

Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

Westinghouse iGen12000TFc delivers 12,000W surge, sufficient for a 3.5-Ton central A/C with soft-starter. Inverters under 7,500W surge will trip breaker overcurrent protection on direct compressor starts.

72-Hour Fuel Logistics

At 50% load over 72 hours, continuous gasoline generators consume ~56 gallons (11x 5-gallon cans). Direct utility Natural Gas hookup eliminates fuel storage degradation, winter freezing, and gas station queues.

NEC 250.20 Neutral Bonding

Bonded neutral generators require terminal bridge disconnection before connecting to home service panels to prevent double-ground GFCI trips.

Natural Gas Leader

Westinghouse iGen12000TFc

7,200 W running on NG (+7200 W lead)

Acoustic Winner

Westinghouse iGen12000TFc

64 dBA at 23ft (-10 dBA quieter)

Easiest Home Hookup

DuroMax XP15000EH

Bonded Neutral (Home Interlock Ready)

Best $/Running Watt

DuroMax XP15000EH

$0.21/W ($2,499)

Technical Specification	Open-Frame Inverter DuroMax XP15000EH $2,499Read Review	Enclosed Inverter Westinghouse iGen12000TFc $1,849Read Review
Running Watts Power Output	12,000 WBest	9,000 W
Peak Starting Surge Power Output	15,000 WBest	12,000 W
240V Output Amps Power Output	50 ABest	37.5 A
Sine Wave Purity Power Quality	<4.6% THD (Pure Sine)	<2.1% THD (Pure Sine)Best
Fuel Burn (25%) Fuel Consumption	0.85 GPH	0.42 GPHBest
Fuel Burn (50%) Fuel Consumption	1.45 GPH	0.84 GPHBest
Runtime (25% Load) Fuel Consumption	14.5 Hours	16 HoursBest
Fuel Tank Capacity Fuel Consumption	10.8 GallonsBest	7.9 Gallons
14-50R 50A Outlet Outlets & Receptacles	1x NEMA 14-50R (50A)Best	1x NEMA 14-50R (50A)Best
L14-30R 30A Outlet Outlets & Receptacles	1x NEMA L14-30R (30A)Best	1x NEMA L14-30R (30A)Best
TT-30R RV Outlet Outlets & Receptacles	NoneBest	NoneBest
5-20R Duplex Outlets Outlets & Receptacles	2x NEMA 5-20R Duplex	4x NEMA 5-20R DuplexBest
Engine Start Method Starting & Safety	Wireless Remote, Electric Key & Recoil	Wireless Remote, Electric Key & Recoil
Carbon Monoxide Sensor Starting & Safety	CO Watchdog / Shield Sensor (ANSI/PGMA G300)	CO Watchdog / Shield Sensor (ANSI/PGMA G300)
Noise Level (23ft) Acoustics & Physical	74 dBA	64 dBABest
Chassis Dimensions Acoustics & Physical	33" L × 30" W × 35" H	34.2" L × 25.2" W × 28.6" H
Dry Weight Acoustics & Physical	330 lbs	191 lbsBest
Neutral Bonding NEC 2026 Hookup	Bonded Neutral (Unbonding Required for Home ATS)	Bonded Neutral (Unbonding Required for Home ATS)
Verified Street Price Cost & Value	$2,499.00	$1,849.00Best

ReaLoad Technical Verdict Dossier

Motor Inrush Starting Surge

The DuroMax XP15000EH delivers 15000W peak surge compared to 12000W on the Westinghouse iGen12000TFc. Starting a 3.5-ton central air conditioner requires an electronic soft-starter to reduce compressor inrush below breaker trip thresholds.

72-Hour Outage Fuel Logistics

At 50% electrical load over a 72-hour power outage, XP15000EH consumes about 104 gallons while iGen12000TFc burns 60 gallons. Homeowners need 21 sealed 5-gallon gasoline cans or utility natural gas.

Home Panel Interlock Safety

DuroMax XP15000EH features a bonded neutral, requiring ground jumper removal before connecting to home breaker panels. Follow NEC 250.20 safety grounding rules.

Head-to-Head Telemetry Comparison

Specification	DuroMax XP15000EH	Westinghouse iGen12000TFc
Running Watts (Gasoline)	12000W	9000W
Peak Watts (Gasoline)	15000W	12000W
Operating Noise @ 23ft	76.5 dBA	66.8 dBA
Factory Neutral Status	Bonded Neutral	Bonded Neutral
Dry Weight	330 lbs	191 lbs
Verified Street Price	$2499	$1849