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ReaLoadREVIEWS
ReaLoad Engineering Benchmark

Generac Protector RG027 (27kW) vs. Kohler gen5.0 Quiet Inverter

Fuel Benchmark:
Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

Generac Protector RG027 (27kW) delivers 6,250W 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

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

Natural Gas Leader
Generac Protector RG027 (27kW)
25,000 W running on NG (+21640 W lead)
Acoustic Winner
Generac Protector RG027 (27kW)
56 dBA at 23ft (-0 dBA quieter)
Easiest Home Hookup
Generac Protector RG027 (27kW)
Floating Neutral (Home Interlock Ready)
Best $/Running Watt
Kohler gen5.0 Quiet Inverter
$0.31/W ($1,299)
Technical Specification
Enclosed Inverter
Generac Protector RG027 (27kW)
$12,499Read Review
Enclosed Inverter
Kohler gen5.0 Quiet Inverter
$1,299Read Review
Running Watts
Power Output
5,000 WBest
4,200 W
Peak Starting Surge
Power Output
6,250 WBest
5,000 W
240V Output Amps
Power Output
20.8 ABest
17.5 A
Sine Wave Purity
Power Quality
<2% THD (Pure Sine)
<1.7% THD (Pure Sine)Best
Fuel Burn (25%)
Fuel Consumption
1.80 GPH
0.21 GPHBest
Fuel Burn (50%)
Fuel Consumption
3.10 GPH
0.34 GPHBest
Runtime (25% Load)
Fuel Consumption
999 HoursBest
14 Hours
Fuel Tank Capacity
Fuel Consumption
0 Gallons
3 GallonsBest
14-50R 50A Outlet
Outlets & Receptacles
None (Use Adapter)Best
None (Use Adapter)Best
L14-30R 30A Outlet
Outlets & Receptacles
None
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
56 dBABest
56 dBABest
Chassis Dimensions
Acoustics & Physical
62.2" L × 30.6" W × 38.6" H
24.4" L × 18.2" W × 20.4" H
Dry Weight
Acoustics & Physical
895 lbs
106 lbsBest
Neutral Bonding
NEC 2026 Hookup
Floating Neutral (Ready for Home Interlock)
Floating Neutral (Ready for Home Interlock)
Verified Street Price
Cost & Value
$12,499.00
$1,299.00Best