Size comparison
22 kW vs 24 kW generator
Two adjacent whole-house sizes. The bigger unit covers more load; the smaller one costs less to buy and run. Here's how to choose between them.
Side by side
| Spec | 22 kW | 24 kW |
|---|---|---|
| Typical use | Main systems for large homes, 3,000–5,000 sq ft | Main systems for large homes, 3,000–5,000 sq ft |
| Unit price (our catalog) | $6,119–$7,369 | $6,559–$7,789 |
| Models in catalog | 8 | 3 |
| Installed cost page | See 22 kW cost | See 24 kW cost |
Which one?
The 24 kW steps up to the next load class, useful if you're adding a second AC, a well pump, or an electric dryer to the backup. The 22 kW keeps the unit and install smaller and cheaper. If you're between them, run our sizing calculator on your actual loads before paying for the extra capacity.
Models at each size
22 kW (8)
- Champion 22kW Whole House (100A Switch, aXis)n/a
- Champion 22kW Whole House (100A Switch, fleX)n/a
- Champion 22kW Whole House (150A Switch, aXis)n/a
- Champion 22kW Whole House (150A Switch, fleX)n/a
- Champion 22kW Whole House (200A Switch, aXis)n/a
- Champion 22kW Whole House (200A Switch, fleX)n/a
- Generac Guardian 22kW$6,119
- Generac Guardian 22kW with Transfer Switch$7,369
Still choosing a size? Run the sizing calculator
Wondering what it costs? See the cost hub
Go deeper