Which generator delivers more running wattage, the H07552 or the GM6000iED?

Firman H07552 delivers higher continuous output with 7500 running watts on gasoline.

Is the H07552 quieter than the GM6000iED?

Genmax GM6000iED is quieter at 50% load, measured at 65 dBA at 23 feet.

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

Genmax GM6000iED features a factory floating neutral ready for standard transfer switch hookup without modification.

ReaLoadREVIEWS

Home Backup & Portable Power Guide

ReaLoad Engineering Benchmark

Firman H07552 vs. Genmax GM6000iED

Highlight Differences

Fuel Benchmark:

Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

Firman H07552 delivers 9,400W 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

Firman H07552

0 W running on NG (+0 W lead)

Acoustic Winner

Genmax GM6000iED

62 dBA at 23ft (-10.5 dBA quieter)

Easiest Home Hookup

Genmax GM6000iED

Floating Neutral (Home Interlock Ready)

Best $/Running Watt

Firman H07552

$0.13/W ($999)

Technical Specification	Open-Frame Inverter Firman H07552 $999Read Review	Enclosed Inverter Genmax GM6000iED $999Read Review
Running Watts Power Output	7,500 WBest	5,000 W
Peak Starting Surge Power Output	9,400 WBest	6,000 W
240V Output Amps Power Output	31.3 ABest	20.8 A
Sine Wave Purity Power Quality	<4.9% THD (Pure Sine)	<2.2% THD (Pure Sine)Best
Fuel Burn (25%) Fuel Consumption	0.50 GPH	0.32 GPHBest
Fuel Burn (50%) Fuel Consumption	0.90 GPH	0.58 GPHBest
Runtime (25% Load) Fuel Consumption	15 HoursBest	11.5 Hours
Fuel Tank Capacity Fuel Consumption	8 GallonsBest	3.8 Gallons
14-50R 50A Outlet Outlets & Receptacles	1x NEMA 14-50R (50A)Best	None (Use Adapter)
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 DuplexBest	2x NEMA 5-20R DuplexBest
Engine Start Method Starting & Safety	Electric Push-Button & Recoil Pull	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	72.5 dBA	62 dBABest
Chassis Dimensions Acoustics & Physical	29.8" L × 27.5" W × 26.1" H	26.2" L × 19.8" W × 22.4" H
Dry Weight Acoustics & Physical	212 lbs	118 lbsBest
Neutral Bonding NEC 2026 Hookup	Bonded Neutral (Unbonding Required for Home ATS)	Floating Neutral (Ready for Home Interlock)
Verified Street Price Cost & Value	$999.00Best	$999.00Best

ReaLoad Technical Verdict Dossier

Motor Inrush Starting Surge

The Firman H07552 delivers 9400W peak surge compared to 6000W on the Genmax GM6000iED. 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, H07552 consumes about 65 gallons while GM6000iED burns 42 gallons. Homeowners need 13 sealed 5-gallon gasoline cans or utility natural gas.

Home Panel Interlock Safety

Firman H07552 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	Firman H07552	Genmax GM6000iED
Running Watts (Gasoline)	7500W	5000W
Peak Watts (Gasoline)	9400W	6000W
Operating Noise @ 23ft	74.5 dBA	65 dBA
Factory Neutral Status	Bonded Neutral	Floating Neutral
Dry Weight	212 lbs	118 lbs
Verified Street Price	$999	$999