Guardian® Elite 20 – 45 kW Standby GeneratorsQuietSource 20-45 kW Liquid-Cooled Standby Generators

Just because your home requires more power doesn't mean you have to pay a whole lot more. Generac Power Systems has taken all of the leading-edge technologies from our industrial product line and applied them to our GUARDIAN Elite liquid-cooled products. Models range from 20-45 kW and cost thousands of dollars less than competitors' units. They also feature automotive style, liquid-cooled engines and our exclusive Whisper-Test™ feature. You won't find more affordable products with this kind of power.

Industrial Power
Our industrial grade automotive engines provide unmatched power and long life. If an engine is designed for an over-the-road truck to run hundreds of thousands of miles, just think how long a generator that never leaves your home will last!

Whisper Quiet Operation
GUARDIAN's exclusive Whisper-Test low speed exercise feature makes our GUARDIAN Elite systems the quietest liquid-cooled generators on the market. Whisper-Test reduces noise by 50% during the generator's weekly automatic self-test cycle allowing for near silent operation that satisfies all known sound ordinances.

  • Liquid-Cooled Engine: Produces more electricity for greater needs
  • Whisper-Test™: Exclusive, self-test feature makes the GUARDIAN Elite quieter than a central air conditioner
  • Superior Paint: Tough, textured powder coat paint finish for unmatched durability and all weather protection
  • UL Listed: For safety and certified power ratings
  • Clean Burning Fuel: Natural gas or LPV
Model Number 5336 5324 5402 5261 5340*
Rated Power (LP / NG) 20/20 25/24 30/29 45/45 45/45
Rated Amps @ 60 Hz
240 V, 1Ø (LP / NG) 83.3/83.3 104.2/100 125/120.8 187.5/187.5 187.5/187.5
3 Phase Models 0174340SBY 0174350SBY 0174550SBY 0174580SBY 0174970SBY
Surge Watts - 240V, 1 Ø 34,800 37,920 48,960 70,080 70,080
Surge Amps 145 158 204 292 292
Engine 1.6L/4 Cyl. 1.6L/4 Cyl. 1.6L/4 Cyl. 2.4L/4 Cyl. 2.4L/4 Cyl.
Alternator RPM 3600 3600 3600 3600 3600
Enclosure Steel Steel Steel Steel Steel
Whisper Test Yes Yes Yes Yes Yes
Sound Level (dBA @ exercise) 62 62 62 61 61
(dBA @ normal operation) 74 74 75 73 73
Dimensions (L" x W" x H") 62x29x34 62x29x34 62x29x34 77x34x45 77x34x45
Automatic Transfer Switch (not included) RTS RTS RTS RTS RTS
Weight 875 875 935 1414 1464
Typical Retail Price $5,500 $7,600 $8,300 $10,000 $11,300