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.