Generac - America's most popular generator
Marson Energy provides sales and service for the a complete line of generators by Generac Power Systems. Generac makes the most widely used line of automatic natural gas or propane backup generators for home or businesses. Generac also produced gasoline-fueled portable generators and commercial diesel systems.
These pages reflect the 2009-2010 Generac product line up as of March 2010. Standby generator models under 60 kW operate on natural gas with low pressure of only 5-7 inches of water column. This allows you to use low pressure gas already entering your home without the added expense and delay of a supply pressure increase.
Air Cooled Models
Generac's air-cooled generator line is America's most popular and most economical choice for home backup power. When combined with an Automatic Transfer Switch (ATS), these systems will automatically provide power for your home in a utility outage.
All Generac Guardian series automatic home standby generators require natural gas pressure of 5-7 inches of water or LP vapor pressure of 11-14 inches of water column.
Guardian Series Air Cooled Natural Gas / LP
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All Generac air cooled products now include a three year warranty Two years parts and labor, one year parts coverage) and are UL Listed 2200.
Generac air cooled Specifications:
| Model | 5518 | 5520 | 5522 |
| Enclosure / Color | Steel - Bisque | Steel - Bisque | Steel - Bisque |
| Engine | 410 cc Generac OHVI | 530 cc Generac OHVI | 992 cc Generac OHVI |
| Rated Power (LP) | 8 kW | 10 kW | 14 kW |
| Rated Power (NG) | 7 kW | 9 kW | 13 kW |
| Voltage | 120/240 V Single Phase | 120/240 V Single Phase | 120/240 V Single Phase |
| Amps @ 120/240V - LP | 66.6 / 33.3 | 83.3 / 41.6 | 116.6 / 58.3 |
| Amps @ 120/240V - NG | 58.3 / 29.2 | 75.0 / 37.5 | 108.3 / 54.2 |
| Engine RPM | 3600 | 3600 | 3600 |
| Dimensions, inches | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 |
| Weight, lbs | 336 | 375 | 425.5 |
| Transfer Switch | Sold Separately | Sold Separately | Sold Separately |
Generac Pre-Packaged Systems with Air Cooled generators - Natural Gas / LP
Generac Guardian series packaged systems include an air-cooled generator and a 100 amp load center-type automatic transfer switch. Packaged generators offer the same features found in in Generac air cooled machines, in a complete, ready-to-install package. Generac air-cooled generators are shipped mounted to a composite pad, and pre-wired to a load cneter transfer switch. The package includes pre-wired conduit to connect generator to transfer switch and transfer switch to your home's distribution panel.
All Generac air cooled products include a three year warranty Two years parts and labor, one year parts coverage) and are UL Listed 2200.
Generac Air Cooled prepackaged system Specifications:
| Model | 5501 | 5502 | 5503 |
| Enclosure / Color | Steel - Bisque | Steel - Bisque | Steel - Bisque |
| Engine | 410 cc Generac OHVI | 530 cc Generac OHVI | 992 cc Generac OHVI |
| Rated Power (LP) | 8 kW | 10 kW | 14 kW |
| Rated Power (NG) | 7 kW | 9 kW | 13 kW |
| Voltage | 120/240 V Single Phase | 120/240 V Single Phase | 120/240 V Single Phase |
| Amps @ 120/240V - LP | 66.6 / 33.3 | 83.3 / 41.6 | 116.6 / 58.3 |
| Amps @ 120/240V - NG | 58.3 / 29.2 | 75.0 / 37.5 | 108.3 / 54.2 |
| Engine RPM | 3600 | 3600 | 3600 |
| Dimensions, inches | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 |
| Weight, lbs | 336 | 375 | 425.5 |
| Transfer Switch | Load Center 8 circuit | Load Center 10 circuit | Load Center 12 circuit |
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| Model | 5523 | 5524 | 5504 | 5505 | 5525 | 5506 |
| Enclosure / Color | Steel - Bisque | Aluminum - Gray | Steel - Bisque | Aluminum - Gray | Aluminum - Gray | Aluminum - Gray |
| Engine | 992cc Generac OHVI | 992cc Generac OHVI | 992cc Generac OHVI | 992cc Generac OHVI | 999cc Generac OHVI | 999cc Generac OHVI |
| Rated Power (LP) | 17 kW | 17 kW | 17 kW | 17 kW | 20 kW | 20 kW |
| Rated Power (NG) | 16 kW | 16 kW | 16 kW | 16 kW | 18 kW | 18 kW |
| Voltage | 120/240 volt single phase | 120/240 volt single phase | 120/240 volt single phase | 120/240 volt single phase | 120/240 volt single phase | 120/240 volt single phase |
| Amps @ 120/240V - LP | 141.6 / 70.8 | 141.6 / 70.8 | 141.6 / 70.8 | 141.6 / 70.8 | 166.6 / 83.3 | 166.6 / 83.3 |
| Amps @120/240V - NG | 133.3 / 66.6 | 133.3/ 66.6 | 133.3/ 66.6 | 133.3/ 66.6 | 150 / 75 | 150 / 75 |
| Engine RPM | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 |
| Sound level - full load - exercise |
66 dB(A) 60 dB(A) |
66 dB(A) 60 dB(A) |
66 dB(A) 60 dB(A) |
66 dB(A) 60 dB(A) |
66 dB(A) 60 dB(A) |
66 dB(A) 60 dB(A) |
| Dimensions, inches | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 | 48 x 25 x 29 |
| Weight, lbs | 445 | 414 | 445 | 414 | 45 1 | 451 |
| Transfer Switch | Not Included | Not Included | 16 circuit prewired | Not Included | Not Included | Not Included |
For more information about home standby generators please call 570-663-9292 or email productsupport@marsonenergy.com.


