Don't let freezers build up more than 6 mm of frost. Defrost regularly to keep freezers working their best.
Tips
Check your freezers door seal by closing the door on a $5 bill. If it's held tightly in place, the seal's OK; if not, the seal should be replaced.
Fully defrost and clean the inside of your freezer at least
once a year.
Vacuum dust from the back and underside of your freezer
regularly.
Don't place warm food or pots in the freezer.
Keep freezers away from all sources of heat, including direct
sunlight, furnace vents, radiators, and appliances such as ovens
and dishwashers.
Allow at least 5 centimeters all around your freezer (or as
recommended by the manufacturer) to allow heat to escape from the
compressor and condensing coil.
Freezers should be ideally set at a temperature of -18(C (0(F).
For each degree below this temperature, the freezer will use
almost 2% more energy.
Looking to buy a new freezer?
If you're shopping for a new freezer, consider a new energy-efficient model. Freezers made in 2002 use less than half the electricity consumed by those made 10 years earlier.
Chest freezers are generally more energy efficient than upright
models. That's because lifting the door on a chest unit releases
less of the freezer's cold air.
Open the door on an upright freezer, however, and the cold air
flows down and out.
Check the EnerGuide label for the lowest kWh consumption per
year.