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Protect your home from unexpected outages with the Generac 14kW 7258 standby generator, a high-performance air-cooled whole-house generator engineered for reliable, automatic power. Designed as a permanent home backup solution, this next-gen home backup generator delivers reliable electricity for modern households that depend on sensitive electronics, HVAC systems, and continuous connectivity.
Powered by Generac’s purpose-built G-Force engine platform, this residential standby generator provides stable, low-distortion power, smart monitoring, and quiet operation, making it a premium residential backup power solution for long-term energy security.
Key Benefits
Automatic Whole-Home Protection
When the grid goes down, this automatic standby generator starts within seconds and restores power through an automatic transfer switch (available in bundled models), keeping lights, refrigeration, heating/cooling, and security systems running without interruption.
True Power™ for Sensitive Electronics
Featuring True Power™ Electrical Technology with less than 5% total harmonic distortion, this high-efficiency backup generator safely powers computers, variable-speed HVAC systems, and smart appliances, making it an ideal backup solution for modern homes.
Smart Monitoring from Anywhere
With Mobile Link® cellular connectivity, Wi-Fi, and Bluetooth standard, this smart standby generator allows you to monitor system status, maintenance alerts, battery health, and run hours from your phone or PC, anytime, anywhere.
Dual-Fuel Flexibility
Operates on natural gas or propane, giving you fuel-source flexibility and dependable performance during extended outages.
Quiet, Compact, and Weather-Protected
The sound-attenuated aluminum enclosure produces approximately 65 dB at 7 meters, making it a low-noise standby generator suitable for residential neighbourhoods. Its compact footprint allows installation as close as 18 inches from a structure (code-compliant), while the enclosure withstands winds up to 150 mph.
Technical Highlights
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Rated Output: 14kW (Natural Gas or Propane)
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Voltage: 240V, single phase, 60 Hz
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Engine: Generac G-Force 800 Series, 2-cylinder, 817cc
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Voltage Regulation: ±1% with solid-state control
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Power Quality: <5% THD
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Fuel Types: Natural Gas / LP Gas
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Connectivity: Cellular + Wi-Fi + Bluetooth
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Exercise Mode: Smart Exercise Technology with programmable schedules
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Warranty: 5-year limited warranty (generator & transfer switch)
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Certification: UL 2200 listed generator; ETL-certified transfer switch in bundled systems
Why Choose the Generac 14kW Model 7258 Generator?
This 14kW whole-house generator is engineered for homeowners who demand:
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Reliable backup power during severe weather and grid failures
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A quiet air-cooled generator with premium enclosure design
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Advanced digital controls and remote monitoring
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Long service life with low maintenance requirements
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Seamless integration into a complete home backup power system