Commercial Generators:
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.
Liquid-Cooled Engine: Produces more electricity for longer outages
Whisper-Test™: Patent-pending, self-test feature makes the GUARDIAN Elite 50% quieter during the generator’s weekly self-test cycle
Aluminum Enclosure: Corrosion-resistance for coastal communities (60 kW and higher)
Longest Life Expectancy in the Industry: Over 3,000 hours of run time
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 |
QT02016 |
QT02516 |
QT03524 |
QT04524 |
Rated Power LP (kW) |
20 |
25 |
35 |
45 |
Rated Power NG (kW) |
20 |
25 |
35 |
43 |
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 |
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. |
