Standby Generator, 18kW | With Whole House Switch | WiFi Enabled

Provides essential circuit power protection for your home, ensuring the necessities remain powered during an outage or up to whole-house coverage when paired with one of Generac’s load-shedding switches. Capable of backing up a five-ton air conditioner.

Generac 18kW Whole House WiFi-Enabled Standby Generator

The Generac 18kW Standby Generator with Whole House Switch offers a complete power solution for homes needing seamless backup during outages. Capable of running your entire household, including HVAC systems and major appliances, this unit combines advanced True Power™ technology, corrosion-resistant aluminum housing, and WiFi-enabled Mobile Link™ monitoring. It provides the reliability, quiet performance, and smart connectivity needed for full property protection, all while supporting dual fuel capability for natural gas or liquid propane.

Key Benefits of the Generac 18kW Whole House Generator

  • True Power™ Technology ensures clean power with less than 5% total harmonic distortion for sensitive electronics
  • G-Force 800 engine with pressure lubrication for increased durability and reduced maintenance requirements
  • Quiet-Test™ Self-Test Mode runs at lower RPM for quieter operation and fuel efficiency
  • WiFi-enabled Mobile Link™ remote monitoring via smartphone, tablet, or PC
  • RhinoCoat™ aluminum housing withstands harsh weather and resists corrosion
  • Supports whole-home coverage with included automatic transfer switch
  • Certified for installation as close as 18” to your home’s exterior wall
  • Backed by a 5-Year Limited Warranty and Generac’s around-the-clock support

Common Applications

  • Whole-house power protection during extended utility outages
  • Ensuring operation of HVAC systems, appliances, and critical circuits
  • Coastal or high-humidity environments requiring corrosion-resistant backup systems
  • Homes seeking WiFi-enabled monitoring and control

Packaging

This 18kW standby generator package includes the G-Force 800 engine, RhinoCoat™ enclosure, Mobile Link™ WiFi monitoring, Evolution™ Controller, Quiet-Test™ mode, and a Whole House Automatic Transfer Switch, providing full property coverage during outages.

Product Properties

Property Value
Fuel Type Liquid Propane or Natural Gas
Oil Capacity (qt) 2.2
Battery Included No
Battery Type Group 26R 540 CCA Minimum or Group 35 AGM 650 CCA Minimum
Engine Type G-Force 800
Weight (lb) 420
Length (in) 48
Height (in) 29
Enclosure Aluminum
Max Cont. Power (NG) 17000
Running Watts (W) 18000
Main Line Circuit Breaker 0
Battery Size 12V
Controller Type Evolution
Quiet Test Mode Yes

Looking for the standalone 18kW model without a whole house switch? Check out the Generac 18kW WiFi-Enabled Generator. Learn more about Generac backup power systems at Generac.com.

Technical Documents