7042 - 22/19.5kW Air-Cooled Standby Generator, Aluminum Enclosure


  • Generac 7042 is run by the Generac G-Force Engine. This engine is strong and stable, capable of handling strenuous use, is pressure-lubricated, and requires less regular maintenance than most engines.
  • Maximum 22000 LP Watts and 19500 NG Watts.
  • It operates at a reasonable 67 Decibels, offering a quiet power solution.
  • The True Power™ Technology in this model means reducing harmonic distortion to less than 5%. This equals cleaner quality of power for sensitive devices and appliances.
  • The 7042 is Wi-Fi capable.
  • The Quiet-Test Self-Test Mode runs the generator at a lower RPM while it performs a five or twelve-minute test. It is also a more fuel-efficient model.
  • This model features Generac’s Evolution Controller. This LCD display monitors the battery and maintenance schedules, and operates with multiple language options.
  • Residential standby generators must be durable, and the Aluminum Enclosure and RhinoCoat powder-coated finish are keys in helping this model resist the elements, including 150 mph winds.
  • The Generac 7042 comes with a 5-Year Limited Warranty.
  • Generac takes pride in customer service, and offers 24/7, year-round customer support.
  • Generac generators and their engines are constructed in the USA.

* This model does not include a Transfer Switch.

The Generac 7042 22/19.5kW Air-Cooled Standby Generator is yet another option from Generac’s Guardian® Series home standby models. This generator series contains the largest generators of any brand available. The 7042 supplies MSRP at the lowest cost per kilowatt of any residential backup generator. In total, it is an excellent complete backup electricity system for your house.

The Generac 7042 is powered with the help of a Generac G-Force Engine. This engine is one of Generac’s best. It is reliable in the long-term and able to handle constant use. It’s pressure-lubricated and, because it is so stable, it needs less upkeep than other engines. In terms of power, this generator and its engine can supply up to 22000 LP watts and 19500 NG watts. It does not come with an Automatic Transfer Switch.

The 7042 is quiet; it runs at a very reasonable 67 Decibels, making it perfect for homes in quiet neighborhoods. Additionally, The True Power TM Technology of this generator lessens harmonic distortion to less than 5%, which means cleaner power quality safe for all sorts of appliances. A Quiet-TestTM Self-Test Mode also slows the generator’s RPM so that it may self-test. These five or twelve minute tests help make sure your generator is running properly and make it more fuel efficient.

The Generac 7042 features technology like the Generac Evolution™ Controller. An LCD display shows you battery levels and maintenance schedules, and offers information in multiple languages. Plus, the Mobile LinkTM Remote Monitor links you to your generator from any distance. This link—sold separately—lets you keep an eye on your unit’s status so you know it is performing while you are away. You can see most of the details of its progress and any service needs that may need to be addressed. All it takes is an internet connection and computer or smart device to make sure that your unit is running efficiently while you are gone.

In addition to having modern technology, this model is sturdy. It has an Aluminum Enclosure and RhinoCoat powder-coated finish to keep it safe from the elements, and wear and tear such as corrosion. During a storm, it can resist 150 mph winds. The Generac 7042 22/19.5kW Air-Cooled Standby Generator has a 5-Year Limited Warranty for service needs. Generac also offers their 365-days-per-year, 24/7 customer support for your needs. All of Generac’s generators and engines are constructed in the U.S.


Spec Sheet

Model Number 7042
Manufacturer Generac Power Systems
Made In USA Yes
Rated Watts 22kW LP/19.5 NG
Rated Amps 91.6 LP/81.3 NG
Voltage 120/240V Single Phase
AC Ton Rating 5 Ton
Enclosure Aluminum
UL Listed Yes
Decibel Rating 7m 67 dbA @ 23 ft at Normal Operating Load
Type Standby Generator
Series Name Guardian Series
Starting System Automatic Start
Low Oil Alert Yes
Hour Meter Yes
Battery Requirements Group 26R, 12V, 540 CCA Min, Not Included
Mounting Pad Composite Base Attached
Weight 476 lbs
Dimensions 48L x 25W x 29H
Engine Brand Generac G-Force 1000 Series
Engine Size 999cc
Engine RPM 3600
Cast Iron Sleeve Yes
Cooling System Air Cooled
Alternator Type Brushed
Frequency 60 Hz
Auto Voltage Regulation Yes
Type Natural Gas (NG)/Propane (LP)
Gauge 0
NG Power Capacity 19.5kW
LP Power Capacity 22kW
NG Consumption Full Load 327 cu.ft/hr
NG Consumption Half Load 228 cu.ft/hr
LP Consumption Full Load 3.9 gal/hr
LP Consumption Half Load 2.53 gal/hr
Transfer Switch
Model Sold Separately
Warranty Information
Consumer Warranty 5 Year Limited Warranty
Shipping Information
Shipping Dimensions 45H X 28W X 51D
Shipping Weight 527 lbs



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