Generac Guardian Series 20/22/24 kW Residential Standby Generators
Air-Cooled Gas Engine
Key Features & Inclusions
- Generac G-Force Engine
- True Power™ Electrical Technology
- Two-line multilingual digital LCD Evolution™ controller (English/Spanish/French/Portuguese)
- 200 amp service rated transfer switch available
- Electronic governor
- Standard Wi-Fi® connectivity
- System status & maintenance interval LED indicators
- Sound attenuated enclosure
- Flexible fuel line connector
- Natural gas or LP gas operation
- 5 Year limited warranty
- Listed for installation as close as 18 in (457 mm) to a structure (check local codes)
The Generac Guardian Series residential standby generators are designed to provide reliable backup power for homes. The units feature a robust G-Force engine known for its durability and performance, coupled with True Power™ Electrical Technology for clean, stable power suitable for sensitive electronics. The generators are housed in a sound-attenuated enclosure for quiet operation and offer Wi-Fi connectivity via the Mobile Link™ system for remote monitoring.
Engine & Generator Technology
Engine Design
- Generac G-Force engine design
- "Spiny-lok" cast iron cylinder walls for durability
- Electronic ignition/spark advance for smooth starting
- Full pressure lubrication system for longevity
- Low oil pressure shutdown system to prevent engine damage
- EPA Certified for non-emergency applications
- High temperature shutdown
Generator Features
- Revolving field, skewed stator for efficient operation
- Displaced phase excitation for smooth output
- Automatic voltage regulation (±1%) for stable power
- UL 2200 listed
Evolution™ Controls & Connectivity
Evolution™ Controls
- AUTO/MANUAL/OFF illuminated buttons
- Two-line multilingual digital LCD display
- Sealed, raised buttons for durability and ease of use
- Utility and generator voltage sensing
- Programmable exercise cycles (weekly, bi-weekly, monthly)
- Engine warm-up and cool-down cycles
Mobile Link™ Connectivity (Wi-Fi equipped models only)
- Monitor generator status via smartphone, tablet, or PC
- View exercise/run hours and total hours
- Access maintenance information and reports
- Check battery status and local weather conditions
Transfer Switch Options
Service Rated Automatic Transfer Switch Features:
- Manages up to four air conditioner loads
- Can manage up to eight additional large loads with Smart Management Modules (SMMs)
- Electrically operated, mechanically-held contacts
- Main breakers rated for 80% continuous load
- 2-pole, 250 VAC contactors
- NEMA/UL 3R aluminum enclosure for indoor/outdoor mounting
- Rated for aluminum and copper conductors
- Silver-plated main contacts
Dimensions (200 Amps 120/240, 1ø Open Transition Service Rated)
| H1 | H2 | W1 | W2 | Depth | |
|---|---|---|---|---|---|
| in | 26.8 | 30.1 | 10.5 | 13.5 | 6.9 |
| cm | 67.95 | 76.43 | 26.67 | 34.18 | 17.5 |
Wire Ranges
- Conductor Lug: 250 MCM - #6
- Neutral Lug: 350 MCM - #6
- Ground Lug: 2/0 - #14
Specifications
| Specification | 20 kW (LP/NG) | 22 kW (LP/NG) | 24 kW (LP/NG) |
|---|---|---|---|
| Rated Maximum Continuous Power Capacity (LP) | 20,000 Watts* | 22,000 Watts* | 24,000 Watts* |
| Rated Maximum Continuous Power Capacity (NG) | 18,000 Watts* | 19,500 Watts* | 21,000 Watts* |
| Rated Voltage | 240 | 240 | 240 |
| Rated Maximum Continuous Load Current - 240 Volts (LP/NG) | 83.3/75.0 | 91.7/81.3 | 100/87.5 |
| Total Harmonic Distortion | Less than 5% | Less than 5% | Less than 5% |
| Main Line Circuit Breaker | 90 amp | 100 amp | 100 amp |
| Number of Rotor Poles | 2 | 2 | 2 |
| Rated AC Frequency | 60 Hz | 60 Hz | 60 Hz |
| Power Factor | 1.0 | 1.0 | 1.0 |
| Battery Requirement | 12 Volts, Group 26R 540 CCA minimum or Group 35AGM 650 CCA minimum | 12 Volts, Group 26R 540 CCA minimum or Group 35AGM 650 CCA minimum | 12 Volts, Group 26R 540 CCA minimum or Group 35AGM 650 CCA minimum |
| Unit Weight (lb/kg) | 448/203 | 466/211 | 455/206 |
| Dimensions (L x W x H) in / cm | 48 x 25 x 29 / 121.9 x 63.5 x 73.7 | 48 x 25 x 29 / 121.9 x 63.5 x 73.7 | 48 x 25 x 29 / 121.9 x 63.5 x 73.7 |
| Sound Output (dB(A) at 23 ft / 7 m, normal load) | 67 | 67 | 67 |
| Sound Output (dB(A) at 23 ft / 7 m, Quiet-Test™) | 57 | 57 | 57 |
| Exercise Duration | 5 min | 5 min | 5 min |
Engine Specifications
- Engine Type: GENERAC G-Force 1000 Series
- Number of Cylinders: 2
- Displacement: 999 cc
- Cylinder Block: Aluminum w/ cast iron sleeve
- Valve Arrangement: Overhead valve
- Ignition System: Solid-state w/ magneto
- Governor System: Electronic
- Compression Ratio: 9.5:1
- Starter: 12 VDC
- Oil Capacity: Approx. 1.9 qt / 1.8 L
- Operating RPM: 3,600
Fuel Consumption
| Fuel Type | Load | ft³/hr (m³/hr) | gal/hr [L/hr] |
|---|---|---|---|
| Natural Gas | 1/2 Load | 204 (5.78) | 164 (4.64) |
| Full Load | 228 (6.46) | 203 (5.75) | |
| Liquid Propane | 1/2 Load | 87 (2.37) | 8.99 [8.99] |
| Full Load | 130 (3.56) | 13.48 [13.48] |
Available Accessories
- G007101-0 Battery Pad Warmer: For use in temperatures below 0 °F (-18 °C).
- G007102-0 Oil Warmer: For use in temperatures below 0 °F (-18 °C).
- G007103-1 Breather Warmer: For extreme cold weather applications, use with Evolution controllers.
- G005621-0 Auxiliary Transfer Switch Contact Kit: Locks out single large electrical loads.
- G007027-0 Bisque Fascia Base Wrap Kit: Provides a sleek appearance and protection from rodents/insects.
- G005703-0 Bisque Touch-Up Paint Kit: For repairing scratches and maintaining enclosure finish.
- G006485-0 LTE LP Tank Fuel Level Monitor: Monitors LP fuel levels and sends alerts for refills.
- G007009-0 (50 amp) / G007000-0 (100 amp) Smart Management Module (SMM): Optimizes generator performance by managing electrical loads.
- G007169-0-4G LTE Mobile Link® Cellular / G007170-0 Wi-Fi/Ethernet Accessories: Enable remote monitoring via smartphone, tablet, or PC.
- G007220-0 Bisque Base Plug Kit: Covers lifting holes for a clean look and protection.
- G007303-0 (20 kW) High Altitude Kit: Required for operation above 2,000 ft (610 m) for optimal performance and emissions.
Dimensions & UPCs
Generator Dimensions & UPCs
| Model | UPC |
|---|---|
| G007038 | 696471074185 |
| G007039 | 696471074192 |
| G007042 | 696471074208 |
| G007043 | 696471074215 |
| G007209 | 696471071511 |
| G007210 | 696471084801 |
Diagrammatic Views: The document includes views showing the generator's left side and front, with approximate dimensions indicated in inches and millimeters. (e.g., Left Side View: 48.0 in / 1218 mm length, 25.1 in / 637.6 mm width, 25.5 in / 648 mm height).
