Experience Reliable Home Backup Power With The Generac 18kW Standby Generator
Never be left in the dark again. The Generac Guardian 18kW Standby Generator delivers reliable whole-home backup power automatically, so your essential appliances and comfort systems keep running during an outage. With enough strength to back up a 5-ton air conditioner, this generator ensures your entire home stays safe, powered, and connected.
Engineered and assembled in the USA, the Guardian 18kW features Generac’s G-Force™ pressure-lubricated engine for long-lasting performance and reduced maintenance. True Power™ Technology provides clean, stable power for sensitive electronics, while the Quiet-Test™ Mode keeps operation quieter and more fuel-efficient.
The included 200 Amp Whole Home Transfer Switch makes installation seamless, and Mobile Link™ WiFi monitoring lets you check generator status anytime, anywhere. Backed by a 5-year limited warranty and supported by Generac’s 24/7/365 customer service team in Wisconsin, this generator is built for peace of mind, no matter what the weather brings.
✔ 18,000 running watts
✔ Whole house coverage with load-shedding switch
✔ Durable all-aluminum, corrosion-resistant enclosure
✔ Smart Evolution™ Controller with multilingual LCD display
✔ Free Mobile Link™ remote monitoring
Generac 18kW Standby Generator Features
Automatic Whole House Power Backup
Provides seamless power for your entire home during outages. Ensures critical appliances remain operational automatically without manual switching. Keeps your home safe, protected, and comfortable, no matter when power goes out.
WiFi Enabled Remote Monitoring
Monitor your generator anywhere with a smartphone or tablet. Receive alerts and status updates in real time. Easy control keeps your system safe, efficient, and always ready to work when needed.
Quiet-Test Self-Test Mode
Runs weekly tests quietly at lower RPMs. Saves fuel and reduces noise. Ensures your generator is always ready without disturbing your household comfort or daily activities.
Durable All-Aluminum Enclosure
Weatherproof, corrosion-resistant, and built to last. Protects the generator from rain, snow, and sun. Keeps your generator in top condition for years of reliable service.
True Power Technology
Delivers clean, stable power with less than 5% harmonic distortion. Protects sensitive electronics from damage. Ensures your devices run smoothly during power outages.
Generac 18kW Standby Generator Warranty
Generac provides a 5-year warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
What's Included
- 1 x Generac Guardian® 18kW Aluminum Home Standby
- 1 x 200A Transfer Switch
Generator 18kW Standby Generator Specifications
|
| Model (Configuration) |
G007226-0
G007228-0
|
| Rated Max Power (LP) |
18,000 Watts |
| Rated Max Power (NG) |
17,000 Watts
|
| Rated Voltage |
240 Volts |
| Rated Load Current (LP / NG) |
78.0 (LP) | 70.8 A (NG) |
| Total Harmonic Distortion |
Less than 5% |
| Main Line Circuit Breaker |
80 Amps |
| Phase |
1 |
| Number of rotor poles |
2 |
| Power factor |
1.0 |
| Rated AC frequency |
60 Hz |
| Battery requirement (not included) |
12 Volts, Group 26R 540 CCA Minimum or Group 35AGM 650 CCA Minimum |
| Unit weight (lb/kg) |
420/191 |
| Dimensions (L x W x H) in / cm |
48 x 25 x 29 | 121.9 x 63.5 x 73.7 |
| Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load |
65 |
| Sound output in dB(A) at 23 ft (7 m) with generator in Quiet-Test™ low-speed exercise mode |
55 |
| Exercise duration |
5 min |
| Engine Specifications |
|
| Engine type |
GENERAC G-Force 400 Series |
| Number of cylinders |
2 |
| Displacement |
816 cc |
| Cylinder block |
Aluminum w/ cast iron sleeve |
| Valve arrangement |
Overhead valve |
| Lifter type |
Hydraulic |
| Ignition system |
Solid-state w/ magneto |
| Governor system |
Electronic |
| Compression ratio |
9.5:1 |
| Starter |
12 VDC |
| Oil capacity including filter |
Approx. 2.2 qt | 2.0 L |
| Operating rpm |
3,600 |
Generac Standby Generator 18kW Manual
