The Most Common Question We Get
When homeowners in Lake Arrowhead and Running Springs call Mountain Top Generator for a quote, the most common question after "how much does it cost?" is "what size do I need?" For larger homes — typically those over 2,500 square feet, or any home with central air conditioning, a well pump, and electric appliances — the conversation usually comes down to two models: the Generac Guardian 22kW and the Generac Guardian 26kW.
Both are excellent generators. Both provide true whole-home coverage. The right choice depends on your specific load requirements, your fuel supply, and your budget.
Generac 22kW Guardian: The Mountain Standard
The 22kW Guardian (model G007042) is the best-selling home standby generator in the United States, and for good reason. It produces 22,000 watts of continuous power — enough to run a 5-ton central air conditioning system, a full-size refrigerator and freezer, a well pump, all lighting, and multiple other loads simultaneously. It features Generac's RhinoCoat™ corrosion-resistant finish (important in mountain environments with snow and moisture), Mobile Link™ WiFi monitoring, and a 200-amp whole-house transfer switch option.
For most Lake Arrowhead and Running Springs homes in the 2,000–3,500 square foot range, the 22kW provides complete whole-home coverage with capacity to spare. It runs on natural gas or liquid propane and is rated for operation at altitude — an important consideration for homes above 5,000 feet.
Generac 26kW Guardian: Maximum Power in a Compact Package
The 26kW Guardian (model G007291) is Generac's most powerful residential generator in the Guardian lineup, delivering 26,000 watts of continuous power — 18% more than the 22kW — in the same physical footprint. It features Generac's G-Force 1000 engine, designed for extended run times, and comes standard with a whole-house transfer switch and WiFi connectivity.
The 26kW is the right choice for homes over 3,500 square feet, properties with multiple HVAC zones, homes with electric vehicle charging infrastructure, or any property where maximum power margin is a priority. For vacation rental owners who cannot afford any load shedding during a guest stay, the 26kW provides the ultimate peace of mind.
Our Recommendation
Mountain Top Generator's technicians will perform a full load calculation during your free site assessment to determine exactly which model is right for your property. There is no one-size-fits-all answer — the right generator depends on your specific appliances, square footage, and power priorities. What we can tell you is that both the 22kW and 26kW Guardian Series generators are outstanding products backed by a 5-year limited warranty and Generac's nationwide service network.
Call us at (909) 414-2803 or stop by our warehouse at 25266 CA-18, Crestline to discuss your options with our team.