The Generac 28kW Air‑Cooled Standby Generator is the largest air-cooled standby generator available, delivering reliable whole-home backup power with one of the highest power outputs in its class. Rated at 120/240 volts and capable of supporting a 200‑amp residential electrical service when paired with a compatible transfer switch, this generator is suited for large homes with high electrical demand. Typical applications include full‑home backup for residences operating multiple HVAC systems, electric appliances, well pumps, and home offices that require consistent power during outages.

This standby generator operates on either natural gas or liquid propane and features built‑in cellular connectivity for remote monitoring through Generac Mobile Link. The air‑cooled design is paired with a G‑Force engine platform developed specifically for standby generator operation, supporting extended run times and consistent performance under varying electrical loads. Additional system features such as oil level sensing, cold‑weather starting support, and an enclosed housing help maintain generator readiness for residential backup power applications.

Key Features:

• Delivering 28,000 watts of backup power, this air-cooled standby generator is the largest available
• 120/240V single‑phase output compatible with residential electrical systems
• Supports 200‑amp service when installed with a compatible transfer switch
• Automatic operation during utility power outages
• Operates on natural gas or liquid propane fuel sources
• Built‑in cellular connectivity for remote monitoring via Generac Mobile Link
• G-Force engine with maintenance free hydraulic lifters enables a lower preventative maintenance cost
• Oil level sensor to help maintain generator readiness
• Improved cold‑start performance for colder climate operation
• Enclosed air‑cooled housing with rear air intake to reduce environmental intrusion
• Backed by a 5‑year limited warranty from Generac