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 QuietSource™ 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, our exclusive patent-pending Whisper-Test™ feature and a corrosion-resistant aluminum enclosure option. 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 a car 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 patent-pending Whisper-Test low speed exercise feature makes our GUARDIAN QuietSource™ 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.

Corrosion-Resistant Protection
If you live near the coast or in an area with a lot of snow, you know how destructive salt and moisture can be. You can protect your standby power investment with a GUARDIAN QuietSource™ aluminum model. Our all aluminum enclosure provides corrosion-resistance that is far superior to anything else on the market.

• Liquid-Cooled Engine: Produces more electricity for greater needs
• Enclosure Options: Steel (tan) or corrosion-resistance aluminum (gray) for coastal communities
• Whisper-Test™: Patent-pending, self-test feature makes the GUARDIAN QuietSource™ 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 (steel/aluminum) 05336/05337 05324/05325 05259/05260 05261/05262 Rated Power LP (kW) 20 25 35 45 Rated Power NG (kW) 20 25 35 43 Voltage @ 60 Hz 120/240 120/240 120/240 120/240 Phase Single Single Single Single Frequency 60 Hz 60 Hz 60 Hz 60 Hz Amps LP 166.6/83.3 208.3/104.2 291.6/145.8 375/187.5 Amps NG 166.6/83.3 208.3/104.2 291.6/145.8 358.3/179.2 Engine/Alternator RPM 3600/3600 3600/3600 3600/3600 3600/3600 Engine OHC 4 cyl. OHC 4 cyl. OHC 4 cyl. OHC 4 cyl. Fuel Consumption LP (cu.ft./hr.)/(gal./hr.) 125 (3.44) 175 (4.81) 222.3 (6.1) 286 (7.86) Fuel Consumption NG (cu.ft./hr.) 315 437 560 720 EPA/CARB Certified Yes Yes Yes Yes Fuel Natural Gas LP Vapor Natural Gas LP Vapor Natural Gas LP Vapor Natural Gas LP Vapor Engine Cooling Liquid Liquid Liquid Liquid Controls R-Series R-Series R-Series R-Series UL 2200 (US and Canada) Yes Yes Yes Yes Sound Output dB(A) at 23 ft. with generator operating at full load 72 73 71 72 Sound Output dB(A) at 23 ft. with generator in WhisperTest™ low speed exercise mode 62 63 57 58 Main Line Circuit Breaker 100 Amp 125 Amp 175 Amp 200 Amp Aluminum Enclosure Option Yes Yes Yes Yes Dimensions (L" x W" x H") 71 x 29.5 x 36 71 x 29.5 x 36 77 x 33.5 x 45 77 x 33.5 x 45 Unit Wt. (lbs.) (steel/aluminum) 784/694 794/704 1393/1276 1414/1297

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Note: Prior to choosing a generator size, always check the appliance or equipment manufacturer's power requirements. This will help to ensure power accommodations for items that cycle during operation.

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