The Generac Standby Generator is the most advanced air-cooled standby generator providing unparalleled peace of mind. It provides the automatic backup power you need to help protect your home and family during a power outage. Connected to your existing LP or natural gas fuel supply, it kicks in within seconds of sensing power loss—automatically—and runs for as long as necessary until utility power returns.
Available in: 10kW, 14kW, 18kW, 22kW, 24kW, 26kW, and 28kW.
Cellular Connectivity
Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link whether you’re home or away.
Cost of Ownership
Lowest total cost of ownership.*
*Based on MSRP + average maintenance
cost of equivalent solutions.
Seamless Energy Integration
Compatible with ecobee by Generac thermostats and Generac PWRcell battery systems to seamlessly monitor and control your home’s energy.
Unmatched Power
28kW is the most powerful air-cooled
standby generator in the market, setting a new standard for whole-home backup power.
Improved Performance
Electronic Fuel and Emission Control to adjust to the environment which improves cold starting and performance when operated in cold climates.
24/7 Customer Support Team
Standing by all day, every day from our headquarters in Wisconsin to answer any questions you might have.
Built in the USA*
Generac generators, engines and
automatic transfer switches are
engineered and built in the USA.*
*Assembled in the USA using domestic
and foreign parts
5-Year Limited Warranty
Included with all air-cooled
standby generators.
Estimated Standby Generator Capacity
Approximate number of major household systems and appliances that can be powered simultaneously by common residential generator sizes.0612182410 kW14 kW18 kW22 kW24 kW26 kW28 kW
Estimated Generator Sizing Guide
| Generator Size | Typical HVAC Capacity | Estimated Appliances & Circuits Supported |
|---|---|---|
| 10 kW | 2-3 ton A/C or heat pump | Refrigerator, freezer, lights, TV, internet, microwave, garage door, well pump, small HVAC system |
| 14 kW | 3-4 ton A/C or heat pump | Everything in 10 kW plus dishwasher, disposal, additional lighting circuits, multiple TVs and electronics |
| 18 kW | 4-5 ton A/C or heat pump | Most average homes including refrigerator, freezer, HVAC, water heater (gas), kitchen circuits, laundry, lighting, internet, security systems |
| 22 kW | 5 ton A/C plus additional loads | Common whole house generator size capable of supporting most homes up to 3,500 sq ft with managed loads |
| 24 kW | 5 ton A/C plus electric appliances | Most household circuits, multiple refrigerators, larger homes, pool equipment, workshop circuits |
| 26 kW | Large 5 ton system or dual HVAC zones | Nearly entire home operation including larger electrical demands and multiple comfort systems |
| 28 kW | Dual HVAC systems or large custom home | Whole home coverage for many larger residences, including pools, electric water heaters, home offices, and extensive appliance usage |
Common Appliance Wattage Estimates
| Appliance | Running Watts |
|---|---|
| Refrigerator | 600-800 W |
| Freezer | 500-700 W |
| Microwave | 1,000-1,500 W |
| Dishwasher | 1,200-1,800 W |
| Electric Water Heater | 4,000-5,500 W |
| Electric Range | 8,000-12,000 W |
| Clothes Dryer | 4,000-6,000 W |
| Well Pump | 1,000-2,000 W |
| 2 Ton HVAC | 2,500-3,500 W |
| 3 Ton HVAC | 3,500-5,000 W |
| 4 Ton HVAC | 4,500-6,000 W |
| 5 Ton HVAC | 5,500-8,000 W |
Typical Home Recommendations
10-14 kW
- Small homes (1,200-2,000 sq ft)
- Essential circuits coverage
- Single HVAC system
- Budget-conscious backup power
18-22 kW
- Medium homes (2,000-3,500 sq ft)
- Most popular whole home generator sizes
- Single larger HVAC system
- Near whole-home coverage
24-28 kW
- Large homes (3,500+ sq ft)
- Multiple HVAC zones
- Pools, workshops, and high electrical demand
- True whole-home backup capability
For a GenWorkX website, a good conversion-focused message would be that generator size should always be determined by a professional load calculation, since square footage alone is not an accurate sizing method. This helps establish expertise while encouraging consultation requests.