Specifications
| Fuel | natural gas or propane |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 20 kW |
| Standby kVA | 20 |
| Prime power | 18 kW |
| Controller | Evolution |
| Oil capacity | 1.8 L |
| Voltage options | 240 V |
| Phase | 1 |
| Rated current | 83.3 A |
| Power factor | 1.0 |
| Circuit breaker | 90 A |
| Battery group | 26R or 35AGM |
| Battery cranking | 540 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Dimensions (L×W×H) | 1219×635×737 mm |
| Dry weight | 203 kg |
| Sound level | 67.0 dBA @ 7 m |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | — | 200 hr |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service intervals
2| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Scheduled maintenance | Change | 200 hr | 24 mo | Oil, oil filter, spark plugs recommended for maintenance kits |
| engine oil | Change | 200 hr | 24 mo |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Engine oil | Manufacturer recommendations | Oil must be purchased separately based on manufacturer recommendations |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
1Cold Weather Operation installation
- Install cold weather kit if temperature regularly falls below 32°F
- Kit includes thermostat-controlled battery pad
- Kit includes engine-block warmer
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What is the power rating of the Generac Guardian 20 kW?
The Generac Guardian 20 kW is rated 20 kW standby (20.0 kVA).
What fuel type does the Generac Guardian 20 kW take?
The Generac Guardian 20 kW runs on natural gas or propane.
How much oil does the Generac Guardian 20 kW take?
The Generac Guardian 20 kW has an engine oil capacity of 1.8 liters (1.9 US quarts), per the manufacturer specification sheet.
What is the continuous rating of the Generac Guardian 20 kW?
The Generac Guardian 20 kW is rated 18 kW prime, against 20 kW standby.
What is the sound level of the Generac Guardian 20 kW?
The Generac Guardian 20 kW is rated at 67.0 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the Generac Guardian 20 kW?
The Generac Guardian 20 kW has a dry weight of 203 kg (447 lb).
What voltages is the Generac Guardian 20 kW available in?
The Generac Guardian 20 kW is offered in 240 V, 1-phase.
How many cold cranking amps does the Generac Guardian 20 kW require?
The Generac Guardian 20 kW uses 1 battery, 12 V each, 540 CCA, group 26R or 35AGM, per the manufacturer specification sheet.
Parts
12| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 098290 | ASM MOTOR STEPPER | 1 | Service part / kit | Amazon eBay $65.00 |
| 098941A | HOUSING GOVERNOR CONNECTOR | 1 | Service part / kit | Amazon eBay |
| 098958A | CONNECTOR INTERFACE ASSEMBLY | 1 | Service part / kit | Amazon eBay $47.99 |
| 0A7568 | Door weldment 1.5EPS | 2 | Service part / kit | eBay $540.52 |
| 0D8656 | BASE MOUNTING 1.5L STNRD & ACSTC | 1 | Service part / kit | Amazon eBay |
| 0D8657 | Radiator support 1.5L Mitsubishi | 1 | Service part / kit | eBay $339.95 |
| 0D8660 | Side brace 1.5L Mitsubishi | 2 | Service part / kit | eBay |
| 0D8664 | Duct acoustic & standard compartment 1.5L | 1 | Service part / kit | eBay |
| 0D8666 | Roof acoustic & standard compartment 1.5L | 1 | Service part / kit | eBay |
| 0E0072A | Acoustic insulation 1.5L roof panel | 1 | Service part / kit | buy |
| 0E0072B | Acoustic insulation 1.5L duct LH panel | 1 | Service part / kit | buy |
| 0E0072C | Acoustic insulation 1.5L duct FNT panel | 1 | Service part / kit | buy |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 50% | 8.99 | 2.37 |
| Standby | 100% | 13.48 | 3.56 |
Available documents
This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.