The Generac 20/18kW Air-Cooled Standby Generator is a dependable and intense home power backup. Its 999cc OHV motor handles the Magnetoelectronic starting method that highlights a reliable quick startup that works superbly with its full pressure lubrication method for longer engine performance. The motor has less than 5% of total harmonic distortion, creating a consistent and adequate power supply for home appliances. This automatic standby generator offers a power capacity of 20,000 watts for Liquid Propane and 18,000 watts for Natural Gas.
The Generac 20/18kW home backup generator has a choice of 200 Amp service rated smart switch. It has an LCD screen with LED indicators for easy monitoring of fuel level, battery, and track maintenance intervals. The air-cooled standby generator has great engine features like the high temperature and low oil level shutdown that protect the engine to avoid damage.
The panels of this generator are made from strong aluminum, keeping it well protected from weather conditions such as rain and sunlight, it is also resistant to corrosion. It is certified by UL, EPA, and CUL to provide safety for operators and protection for the environment. In addition, Generac has 24/7 customer service, it also comes with a 5-year limited warranty.
Configuration Options
The Generac 20/18kW Air-Cooled Standby Generator comes in four packages with an option for a transfer switch. Select your preference from the drop-down menu above.
- 7038: No Transfer Switch; UL/EPA/CUL Certified
- 7039: With 200 Amp Service Rated Smart Switch; UL/EPA/Non-CUL Compliant
- 7040: With 200 Amp Service Rated Smart Switch with Mobile Link; UL/EPA/Non-CUL Compliant
- 7041: With 200 Amp Non-Service Rated Smart Switch; UL/EPA/CUL Certified
The 200-Amp Service Rated Switch is an electrically operated switch rated for all classes of load both inductive and resistive. It follows the standard of Digital Power Management (DPM) technology for added safety. The enclosure is NEMA/UL3R rated aluminum enclosure great for harsh weather conditions.
Certifications
UL. The Underwriters Laboratories Inc. (UL) is the leading and trusted product safety accreditor in the United States. UL is recognized as the organization for the health and safety testing of machines and other industrial equipment.
EPA. The United States Environmental Protection Agency (EPA or USEPA) is from the federal government of the United States which regulates and ensures the protection of both human health and the environment.
CUL. The Canadian Electrical Code (CUL) certification ensures that the equipment has been tested thoroughly and has passed the requirements issued by the CSA or Canadian Standards Association. The engines under this certification are suitable for use in Canada.
Specifications (LP/NG)
|  10/9 kW | 13/13 kW | 16/16 kW | 20/18 kW | 22/19.5 kW |
| 100 Amp Transfer Switch | Yes | Yes | Yes | - | - |
| 200 Amp Service Rated Smart Switch | - | Yes | Yes | Yes | Yes |
| Voltage (Single Phase) | 120/240V | 120/240V | 120/240V | 120/240V | 120/240V |
| Amps @ 240V LP/NG | 41.7 / 37.5 | 54.2 / 54.2 | 66.6 / 66.2 | 83.3 / 75 | 91.6 / 81.3 |
| Engine / Alternator RPM | 3,600 | 3,600 | 3,600 | 3,600 | 3,600 |
| Engine | Generac G-Force | Generac G-Force | Generac G-Force | Generac G-Force | Generac G-Force |
| Engine Displacement | 460cc | 816cc | 816cc | 999cc | 999cc |
| Fuel Consumption @ 100% Load NG cu. ft/hr | 127 | 225 | 245 | 301 | 327 |
| Fuel Consumption @ 100% Load LPG gal/hr | 1.48 | 2.45 | 2.99 | 3.56 | 3.90 |
| Quiet Test Mode | Yes | Yes | Yes | Yes | Yes |
| Dimensions (L x W x H) | 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.) | 338 | 385 | 420 | 448 | 466 |
| Standard with Mobile Link | Yes | Yes | Yes | Yes | Yes |