Write the next sentence in the following story.

How to choose an energy efficient refrigerator
Think about what you want in a new refrigerator.
Do you require a built-in or freestanding refrigerator. No-frost of static type? Double door, ice and water dispenser? If you are looking for a cheap model, there are some things you should keep certain things in mind.

Select from the following. + Know that less expensive models sometimes are older models that do not meet the energy star qualifications. These models are a minimum of 20% less efficient than the energy star rated refrigerators.. + First, think about why you're getting the refrigerator. An increase in temperature in your home often makes it more difficult to keep a freezer well-stocked.. + They all correlate to the cooling requirements that you have. If you want an electric refrigerator, be aware of how cold it will be.. + Make sure you have several options in mind, or you might look for a combination that fits for you. Consider outer-shaker refrigerator or system refrigerator... The answer should be
Know that less expensive models sometimes are older models that do not meet the energy star qualifications. These models are a minimum of 20% less efficient than the energy star rated refrigerators.