Commercial LP Generators for Home or Office Power Supply

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Single Phase = Quietsource  
Three Phase = Guardian Elite

20 - 45 kW Liquid-Cooled LP Standby Generators

QuietSource 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.
Generator Set
Model (steel/aluminum) 05336/05337 05324/05325 05259/05260 05261/05262
Rated Power LP (kW) 20 25 35 45
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

20-150 kW Liquid-Cooled Standby Generators

GUARDIAN Elite 20-150 kW Liquid-Cooled Standby Generators
 
GUARDIAN® is now doing to the commercial market what it has already done to the residential market… making standby power reliable, yet affordable. Protect your revenue stream by investing in a GUARDIAN Elite™ commercial automatic standby generator. Our GUARDIAN Elite generators are ideal for a broad range of enterprises, including restaurants, convenience stores, supermarkets, banks, fitness centers, hotels, and retail outlets.

Three-phase models range from 20-150 kW and single-phase models from 60-150 kW. They run on either natural gas or LPV, feature automotive style, liquid-cooled engines, GUARDIAN’s exclusive Whisper-Test™ feature and a corrosion-resistant aluminum enclosure option. 

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

Value Priced
During a utility outage, a GUARDIAN Elite will protect your revenue stream and prevent expensive losses by keeping your business… in business. Not only are our products engineered for reliability and long life, our volume production and short lead times make GUARDIAN Elite products an even better value.
Three Phase LP Generator Sets
 
20-45 kW Gensets
Model Number QT02016 QT02516 QT03524 QT04524
Rated Power LP (kW) 20 25 35 45
Amps @ 208V, 3Ø 70 n/a 122 156
Amps @ 480V, 3Ø n/a n/a 53 68
Voltage @ 60 Hz 120/208 120/208 120/208, 277/480 120/208, 277/480
Phase Three Three Three Three
Frequency 60 Hz 60 Hz 60 Hz 60 Hz
Engine/Alternator RPM 3600/3600 3600/3600 3600/3600 3600/3600
Engine 1.6L OHC 4 cyl. 1.6L OHC 4 cyl. 2.4L OHC 4 cyl. 2.4L 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 80 Amp 100 Amp 150, 60 Amp 175, 80 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

Generator Set
60-80 kW LP Generators
Model # QT06030 QT07068 QT08046
Rated Power LP (kW) 60 70 80
Amps @ 240V, 1Ø 250 292 333
Amps @ 208V, 3Ø 208 243 278
Amps @ 480V, 3Ø 90 105 120
Voltage @ 60 Hz 120/240, 1Ø
120/208, 3Ø
277/480, 3Ø		 120/240, 1Ø
120/208, 3Ø
277/480, 3Ø		 120/240, 1Ø
120/208, 3Ø
277/480, 3Ø
Phase Single and 3-Phase Single and 3-Phase Single and 3-Phase
Frequency 60 Hz 60 Hz 60 Hz
Engine/Alternator RPM 3600/3600 1800/1800 3600/3600
Engine 3.0 V-6 6.8L V-10 4.6L V-8
Fuel Consumption LP
(cu.ft./hr.)/(gal./hr.)		 376.3 (10.34) 411 (11.3) 465 (12.78)
Fuel Consumption NG (cu.ft./hr.) 960 1020 1154
EPA/CARB Certified Yes Yes Yes
Fuel Natural Gas
LP Vapor		 Natural Gas
LP Vapor		 Natural Gas
LP Vapor
Engine Cooling Liquid Liquid Liquid
Controls R-100 H-100 H-100
UL 2200 (US and Canada) Yes Yes Yes
Sound Output dB(A) at 23 ft. with generator operating at full load 73 71 74
Sound Output dB(A) at 23 ft. with generator in WhisperTest™ low speed exercise mode 62 60 61
Main Line Circuit Breaker 300, 250, 100 Amp 300, 250, 125 Amp 350, 300, 150 Amp
Aluminum Enclosure Option Yes Yes Yes
Dimensions (L" x W" x H") 88.6 x 33.5 x 47.8* 96.5 x 36.8 x 47.9 115.2 x 36.8 x 54.8*
Unit Wt. (lbs.) (steel/aluminum) 1650/1513 2185/2040 2010/1836

* Does not include measurement of exhaust stack(s)



Controls and Transfer Switch
R-Series Digital Controller
H-100 Digital Controller
Transfer Switch
7 LED Indicator Lights Standard
High Temperature Shutdown Standard
Low Coolant Level Shutdown Standard
Automatic Voltage Regulator with Over-voltage Protection Standard
  • Voltage Regulation (at steady state from no load to 100% load
 ± 1.0 %
  • Frequency Regulation (at steady state from no load to 100% load)
 ± 0.5%
Engine Start Sequence Cyclic Cranking: Initially 15 sec. on, then 7 sec. rest, 7 sec. on. 90 sec. maximum duration
Safety Fuse Standard
Starter Lockout Starter cannot re-engage until 5 sec. after engine has stopped
2 Amp Battery Charger Standard
Engine Warm-up 10-15 seconds
Engine Cool-down 1 minute
Mode Switch
  • Auto Position
 Utility Failure / 7 day exerciser
  • Off Position
 Stops unit. Power is removed. Control and charger still operate.
  • Manual/Test Position
 Start with starter control, unit stays on. If utility fails, transfer to load takes place
Automatic Weekly Exerciser with Selectable Low Speed Exercise Standard

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.


Controls and Transfer Switch

R-Series Digital Controller
7 LED Indicator Lights Standard
High Temperature Shutdown Standard
Low Coolant Level Shutdown Standard
Automatic Voltage Regulator with Over-voltage Protection Standard
  • Voltage Regulation (at steady state from no load to 100% load
 ± 1.0 %
  • Frequency Regulation (at steady state from no load to 100% load)
 ± 0.5%
Engine Start Sequence Cyclic Cranking: Initially 15 sec. on, then 7 sec. rest, 7 sec. on. 90 sec. maximum duration
Safety Fuse Standard
Starter Lockout Starter cannot re-engage until 5 sec. after engine has stopped
2 Amp Battery Charger Standard
Engine Warm-up 10-15 seconds
Engine Cool-down 1 minute
Mode Switch
  • Auto Position
 Utility Failure / 7 day exerciser
  • Off Position
 Stops unit. Power is removed. Control and charger still operate.
  • Manual/Test Position
 Start with starter control, unit stays on. If utility fails, transfer to load takes place
Automatic Weekly Exerciser with Selectable Low Speed Exercise Standard

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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