Generac 48kw
Generac 48kW Liquid-Cooled Standby Generator
The Generac 48kW liquid-cooled standby generator provides powerful whole-home backup protection for large residential properties with significant electrical demand. Designed for long-run durability and smooth power delivery, this system is capable of supporting multiple HVAC systems, large appliances, and critical home infrastructure during extended outages.
At HomeSafe, the 48kW platform is recommended for homes with substantial square footage, multiple electrical panels, and higher-than-average energy usage. Built with Generac’s commercial-grade liquid-cooled engine and advanced controller technology, it delivers dependable performance for homeowners who require uninterrupted comfort and reliability.
Ideal Applications
Homes up to 6,000–7,500 sq ft
3–4 HVAC systems
Pools and spas
Well or septic systems
EV charging stations
Outdoor kitchens or detached structures
High-end appliance packages
Key Product Features
48,000 Watts of Standby Power
Liquid-Cooled Industrial-Grade Engine
Power Zone® Pro Digital Controller
True Power™ Technology (<5% Total Harmonic Distortion) for clean, stable electricity
Quiet Operation with Automotive-Style Muffler
Corrosion-Resistant Aluminum Enclosure
Natural Gas or Liquid Propane Compatible
Remote Monitoring Capability
5-Year Limited Warranty
Electrical Specifications
Single-phase, 120/240V
Liquid-cooled automotive-style engine platform
Requires appropriately sized automatic transfer switch (commonly 400A service or multiple 200A switches depending on electrical configuration)
Installation Snapshot
Installation typically includes:
Engineered concrete generator pad
Fuel system verification (gas pressure and line sizing critical)
Professional electrical load calculation
Large automatic transfer switch installation
Possible coordination with utility provider
Estimated fully installed investment: $42,000 – $52,000+(Varies depending on service configuration, fuel supply, and site conditions)
Why Choose the Generac 48kW?
The Generac 48kW system is ideal for homeowners who require robust backup power but do not need the largest estate-class generators. It provides reliable performance for homes running multiple HVAC zones and high-demand electrical systems while maintaining the efficiency and reliability Generac systems are known for.
Recommended only after a comprehensive HomeSafe load analysis.


