NewAir G73 Hardwired Electric Garage Heater, Heats up to 750 square feet Built-in thermostat with automatic shut-off protects against overheating Durable stainless steel construction is built to last.Coverage Area: 500 square feet Hardwired (not a traditional electrical outlet) to eliminate maintenance problems associated with propane heaters Heats up to 750 square feet - perfect for shops, garages, worksites The NewAir G73 is a 240 volt heater and requires 30 amp circuits when setting up. Profession installation from an Electrician is recommended