If you know in advance that your power will be cut off, set your freezer for -10 to -20 degrees F, so it can get as cold as possible before the power is turned off.
Keep the freezer closed. Opening the door will hasten the thawing of foods inside.
Cover the freezer with blankets or quilts for insulation to help hold the cold inside. For more insulation, put crumpled newspaper between the freezer cabinet and blankets. Pin the blankets away from the air vent. The air vent must be kept open since air is needed when the freezer comes back on.

Locate your freezer in a cool, dry room for most efficient operation. The freezer mechanism will run better above 40 degrees F. Leave room on both sides and at the back for heat to be given off into the air. Plug into a grounded outlet and only into its own circuit, so an overload from another appliance cannot shut it off. It should be leveled so the door closes tightly; uprights may be tilted slightly from the front so the door closes readily.

There are two basic freezer styles: upright (front loading) and chest (top loading). Chest freezers are 10-25 percent more efficient than uprights because they are better insulated and air doesn't spill out when the door is opened. However, you should also consider convenience when selecting a freezer; chest models can be more difficult to organize.

One of the most common problems with a freezer door is its inability to keep all that good cold air sealed safely inside. Before you can fix the problem of a faulty door, you must first determine what is causing it to malfunction.
The Door Won’t Close
First, check to see if the door is rubbing up against something that keeps it from closing properly. Examine the hinges to make sure they are free from any debris that inhibits them from working properly. Sometimes a little silicone spray or Vaseline applied to the hinge will create a smoother glide.

An upright freezer that may reside in the garage is easily overlooked when spring cleaning comes around. Over the course of a year, spills and leaks take their toll. Food particles may become lodged in the folds in the gasket and other hard-to-reach places. Over time, this may prevent the freezer from closing completely, leading to lower performance and higher power bills. As part of required freezer service, you must clean your upright freezer at least once every year. You can easily clean your upright freezer with regular home cleansers by following the below instructions.

If you would like to count on your chest freezer to be efficient in providing space to store frozen items and to be energy efficient you will need to keep it clean and free of frost buildup. The following steps will guide you through this process.

Items Needed
Buckets of hot water
Clean rags
Bucket of soapy water
Step 1 – Unplug the Freezer
Unplug the freezer power cord. This will allow it to defrost.
Step 2 – Remove Frozen Items

A chest freezer is a free-standing appliance that provides a good deal of capacity to store frozen foods. Where space is available, it is a popular choice for homeowners who can invest in a refrigerator without concern for a freezer compartment. Furthermore, purchasing frozen foods in bulk can help save on the family budget as well when stored in a chest freezer.

Chest freezers are often seen in stores and restaurants, storing your favorite ice-cream. These freezers are also great options for homeowners who buy food in large quantities. They can be useful for people who want to store their food long-term, or for those who entertain often. Due to the large size of these appliances, most people keep them in the basement or a garage.

A freezer door is something that you will usually need to assemble yourself when buying a new freezer. Some of the time you can buy one that has the freezer door already attached. However, when you buy a brand new stand up freezer, or chest freezer, the assembly is done at your home. Many delivery companies will have their delivery personel trained in how to assemble the freezer door. This should not scare you, though. You can dismiss the delivery guys and assemble the freezer door yourself and save a few bucks.
What You Will Need
Screwdriver
Socket Wrench
Torpedo Level

There are several advantages of an upright freezer as opposed to a "chest" style freezer.

Space Efficiency
Having a similar profile to a refrigerator, you might be able to store it in a large pantry area, laundry area, or even in a large kitchen. It is more space efficient than a chest freezer because it’s more difficult to utilize the space on top of a chest freezer.

Organization
An upright freezer has a similar configuration inside that a refrigerator has such as shelving, and interior lighting, providing easier access to items.

Cleaning