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ReaLoad Engineering Benchmark

DuroMax XP11000iHT vs. GENMAX GM10500XiT

Fuel Benchmark:
Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

DuroMax XP11000iHT delivers 11,000W 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

GENMAX has factory floating neutral, safely compliant with 3-pole transfer switches and manual panel interlocks without ground loop faults.

Natural Gas Leader
DuroMax XP11000iHT
7,650 W running on NG (+850 W lead)
Acoustic Winner
DuroMax XP11000iHT
61 dBA at 23ft (-7 dBA quieter)
Easiest Home Hookup
GENMAX GM10500XiT
Floating Neutral (Home Interlock Ready)
Best $/Running Watt
GENMAX GM10500XiT
$0.19/W ($1,549)
Technical Specification
Enclosed Inverter
Open-Frame Inverter
Running Watts (gasoline at 0 ft)
Power Output
9,000 WBest
8,000 W
Peak Motor Starting Surge (gasoline)
Power Output
11,000 WBest
10,500 W
Continuous 240V Split-Phase Amps
Power Output
37.5 ABest
33.3 A
Sine Wave Purity (Total Harmonic Distortion)
Power Quality
<1.9% THD (Pure Sine)Best
<2.4% THD (Pure Sine)
Fuel Burn at 25% Load (GPH / Hr)
Fuel Consumption
0.45 GPHBest
0.51 GPH
Fuel Burn at 50% Load (GPH / Hr)
Fuel Consumption
0.88 GPHBest
0.91 GPH
Continuous Runtime on Tank at 25% Load
Fuel Consumption
17 HoursBest
13.5 Hours
Gasoline Fuel Tank Capacity
Fuel Consumption
7.9 GallonsBest
6.9 Gallons
14-50R Outlets (50A 120/240V Whole-House)
Outlets & Receptacles
1x NEMA 14-50R (50A)Best
1x NEMA 14-50R (50A)Best
L14-30R Outlets (30A 120/240V Twist-Lock)
Outlets & Receptacles
1x NEMA L14-30R (30A)Best
1x NEMA L14-30R (30A)Best
TT-30R Outlets (30A 120V RV Travel Trailer)
Outlets & Receptacles
1x NEMA TT-30R (RV)Best
None
5-20R Duplex Outlets (20A 120V Household GFCI)
Outlets & Receptacles
4x NEMA 5-20R DuplexBest
2x NEMA 5-20R Duplex
Engine Starting Methods
Starting & Safety
Wireless Remote, Electric Key & Recoil
Wireless Remote, Electric Key & Recoil
Carbon Monoxide Auto-Shutoff Sensor
Starting & Safety
CO Watchdog / Shield Sensor (ANSI/PGMA G300)
CO Watchdog / Shield Sensor (ANSI/PGMA G300)
Noise Level at 23ft (25% Load)
Acoustics & Physical
61 dBABest
68 dBA
Chassis Dimensions (L × W × H)
Acoustics & Physical
36" L × 26" W × 30.5" H
30.5" L × 22.4" W × 25.4" H
Dry Weight with Wheel Assembly
Acoustics & Physical
239 lbs
156.5 lbsBest
Factory Neutral Bonding (NEC 250.20)
NEC 2026 Hookup
Bonded Neutral (Unbonding Required for Home ATS)
Floating Neutral (Ready for Home Interlock)
Lowest Verified Street Price
Cost & Value
$2,499.00
$1,549.00Best