PIERRO
Quality Electrical Construction, INC
Pierro Quality Electrical Construction, INC
Contact UsAffiliatesLinksAbout UsCustomer Survey


Commercial generators run from 22-150 KW
Generac Commercial Series 22 – 150 kW 

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 Series automatic standby generator. Our GUARDIAN Commercial generators are ideal for a broad range of enterprises, including restaurants, convenience stores, supermarkets, banks, fitness centers, hotels, and retail outlets. 

Commercial models are available in both single and three-phase configurations. They run on either natural gas, diesel or LPV, feature automotive style, liquid-cooled engines and GUARDIAN's exclusive Whisper-Test™ feature. Our 22, 27, 36 and 48 kW premium models come standard with higher displacement, low speed engines and aluminum enclosures. Aluminum enclosures are optional on the 60 kW and larger models. 

Whisper Quiet Operation 
GUARDIAN's exclusive Whisper-Test low speed exercise feature makes our GUARDIAN 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. 

Affordable Revenue Protection 
During a utility outage, a GUARDIAN 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 products an even better value. 



20-45 KW
Generator Set 
60-80 KW
100-150 KW
Controls and Transfer Switch 
Transfer Switch
Pictured Above: 45 KW 
Commercial Generators
NEXUS Liquid CooledController