Generac Guardian 24/21 kW Home Standby
- True Power™ Technology
- Generac’s G-Force™ Engine
- Quiet-Test™ Self-Test Mode
- Tough, Durable All-Aluminum Enclosure
- Smart, User-Friendly Controls
- Mobile Link™ Wi-Fi Connectivity FREE with every Guardian Series Home Standby Generator
- Alexa Smart Home Compatible
Description
Generac Guardian 24/21 kW Home Standby
The Guardian 24 kW delivers powerful, utility-grade backup in a compact footprint. It includes Wi-Fi/Mobile Link for remote monitoring and proven Guardian features for quiet, efficient operation.
Model options
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7209 — 24/21 kW Air-Cooled, Aluminum Enclosure (Generator Only)
Best when you already have a transfer switch or want a custom whole-home design. Wi-Fi/Mobile Link is included. -
7210 — 24/21 kW Air-Cooled + 200A SE (Whole-House) Transfer Switch
Complete bundle for up to 200A services. The included PWRview™ SE switch adds whole-home energy monitoring.
Output ratings: 24 kW on LP and 21 kW on NG (120/240 V split-phase). True Power™ delivers <5% THD clean power for sensitive electronics.
Placement: permitted as close as 18″ from a structure’s wall (always follow local codes/clearances).
What a 24/21 kW generator can run (typical)
A 24/21 kW unit can back up most essentials plus many comfort loads in gas-heated homes. Actual capacity depends on start surges, altitude, and temperature.
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Refrigeration & pumps
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Refrigerator and freezer
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One or two sump/well pumps (often up to ~1 HP with load management)
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Heating & cooling
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Gas furnace or boiler (blower/circulators)
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Central A/C up to ~5 tons with soft-start or smart load management (varies by LRA).
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Home essentials
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Lighting circuits (LED), outlets, garage door opener
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Internet/router, home office electronics, TVs
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Kitchen outlets and a microwave; many ranges/ovens can be included if other loads are managed
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Rule of thumb:
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LP (24 kW) ≈ 100 A at 240 V available for steady loads—keep headroom for motor starts.
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NG (21 kW) ≈ 87.5 A at 240 V steady, plus start headroom.
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Large electric loads (tankless electric water heater, electric dryer, EV charger) usually need smart load shedding or exclusion.
Built-in protection
The generator continuously monitors itself and will safely shut down for:
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Low oil pressure
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High temperature
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Over/under-speed
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Controller fault / over-crank
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Wiring error
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Over/under-voltage
Key performance features
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True Power™ (<5% THD): utility-grade power for sensitive electronics.
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G-Force™ engine: purpose-built for generators; durable, low-maintenance design.
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Quiet-Test™ mode: low-RPM self-test that reduces noise and fuel use.
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All-aluminum enclosure: RhinoCoat™ finish for corrosion resistance in all weather.
Connected convenience
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Mobile Link™ monitoring (included): check status, alerts, and maintenance from your phone, tablet, or PC.
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7210 bundle: 200A SE whole-house switch with PWRview energy monitoring.
Professional installation by GSHA Services, LTD
GSHA Services provides turnkey, code-compliant installation—site prep, pad, wiring, transfer switch, fuel hookup, and start-up—so your system is ready when you need it.
Additional information
| brand | Generac |
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