If you are currently using electric heaters, we do not anticipate that the Duo will require additional electrical work for installation with existing 120 V / 20 A outlets available.
If you are a new restaurant, or transitioning from propane or natural gas heaters, you will need an electrician to route necessary power from the panel to the patio. We are happy to work with your electrician of choice, or recommend our partner electrician who can assist with getting the appropriate electrical setup ready.