Before you buy a new freezer, you need to know what voltage it uses. There are two types: 110 volt and 220 volt freezers. Both require separate circuits for power. For upright freezers, a separate circuit is required.

220 volt freezers are 230 or 240 volt
A 220 volt freezer has a very compact size that is perfect for any home or office and is a great way to add more storage space. It also comes with an adjustable thermostat, frost indicator button, defrost drain, removable storage basket, and quick freeze facility.
A separate circuit is required for chest and upright freezers
To safely operate a freezer, it is important to have a dedicated circuit. A dedicated circuit can accommodate up to four devices. A cover plate can be used to block another appliance from using the circuit if the circuit doesn’t have enough outlets. This workaround is not practical in a house with limited outlets.
Upright and chest freezers use different power sources and require separate circuits. They require 120-volt, individually ground branch circuits and three prong grounding-type outlets. Never plug your freezer directly into an existing outlet. You can ensure the safety of your freezer by choosing a unit with GFCI outlets.
208 volt freezers can be converted to 230 volt.
There are two basic types of power for freezers: 230 volt and 208 volt. It is important to know the differences between these two types of freezers before you make a decision. 230 volt freezers can handle more energy and are more powerful than 208 volt freezers.
110 volt freezers can be plugged into a standard 110-120 volt outlet
Most refrigerators and freezers can be plugged into standard wall outlets. They have the same outlet and power requirements as electric dryers and kitchen ranges. Check your manual for the appliance’s requirements. Refrigerators are non-continuous duty loads. You can place more than one appliance on the same circuit if it does not exceed the breaker’s wattage rating.
In general, most residences use two complementary 120-volt services. This service means that one side has 120V and the other is neutral. A 110-120-volt freezer can be plugged into a standard 110/120-volt outlet.