The #1 Authorized Generac Home Standby Generator Dealer in Ontario
When the grid goes down, your home doesn’t have to. The Generac 18kW home standby generator is a permanently installed backup power system designed to automatically detect a utility outage and restore power through a compatible automatic transfer switch—helping keep essentials like heating equipment, sump pump, fridge/freezer, internet, lighting, and more running when you need them most.
Powered by Generac’s G-Force™ 800 Series engine and controlled by the Power Zone™ 200 controller, this next-generation platform combines dependable standby performance, clean power for modern electronics, and smart monitoring with Mobile Link® connectivity (cellular standard, plus Wi-Fi and Bluetooth).
$7,895.00
The Generac 18kW Home Standby Generator is a next-generation automatic backup power solution for homeowners who want stronger residential standby capacity in a compact air-cooled design. This model delivers 18 kW on liquid propane and 17 kW on natural gas, with standard Mobile Link® cellular monitoring, Quiet-Test™ exercise mode, Power Zone™ 200 controls, and True Power™ technology for clean, dependable backup power.
Best fit: mid-size to larger homes that need automatic backup power for essential circuits, selected comfort loads, and more household flexibility than smaller air-cooled models. The Generac 18kW is a strong residential standby option, but a professional load calculation is still required to confirm the correct generator size before installation.
With an automatic transfer switch, it starts on its own during an outage and powers the approved backup loads in your home.
Standard Mobile Link® lets you check status, readiness, maintenance alerts, battery condition, and activity from your phone or computer.
True Power™ technology delivers under 5% harmonic distortion to support sensitive electronics and modern appliances.
Low-speed weekly self-tests run quieter while keeping the generator ready for the next power outage.
Onboard controller handles status, maintenance reminders, smart battery charging, protection features, and operating logs.
With 18 kW on propane and 17 kW on natural gas, this model gives homeowners more flexibility for selected household systems and comfort loads.
The 18kW model is suited to homeowners who want a stronger automatic backup power system while still staying within Generac’s compact air-cooled residential lineup. Depending on the final electrical design, transfer switch configuration, fuel supply, and load calculation, it may support a practical mix of everyday essentials, home protection loads, and selected comfort loads.
Common backup priorities may include lighting, refrigerator, freezer, sump pump, furnace blower, internet equipment, selected receptacles, garage door opener, security system, well pump, and other important circuits. Larger loads — such as central air conditioning, electric ranges, electric dryers, hot tubs, large electric water heaters, or multiple motor-starting appliances — may still require load management or a larger generator.
The Generac 18kW Home Standby Generator gives homeowners more backup flexibility than smaller essential-load systems. For many Ontario homes, it can be a strong fit when the goal is to keep core household systems running while also allowing room for selected larger loads when the system is designed correctly.
Depending on the home, an 18kW standby generator may support a useful combination of refrigeration, heating support, sump pump protection, lighting, internet, selected receptacles, water systems, and other priority circuits. With proper load management, it may also help support certain comfort loads without oversizing the generator.
Because every home is different, final backup capacity should never be based on kilowatt rating alone. Gas supply, electrical panel size, motor-starting loads, HVAC requirements, and customer priorities all affect the final recommendation.
Platinum sizing recommendation: An 18kW generator can be an excellent choice for homeowners who want more backup power than a 10kW or 14kW system, but it should still be matched to the home through a proper load review. Our team checks your panel, fuel supply, starting loads, and backup priorities to confirm whether 18kW is the right fit or whether a 14kW, 22kW, 24kW, or larger Generac model is more appropriate.
We can confirm whether the 18kW fits your home or whether a 14kW, 22kW, 24kW, or larger model would be a better match.
A member of our team will be in touch shortly to discuss how we can help to meet your needs.
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