Compare the way each type produces heat. Decide whether you prefer the wider range of heat focus that a ceramic heater produces, as the heat bounces off ceramic disks and flows out through the openings in the heater casing. Consider the more direct heat an infrared heater provides, as it projects warmth from heating rods and focuses it directly toward people or objects.
Compare the size of each unit and the area where the heat is emitted to determine whether it will fit well in the space you intend to use it. Determine the difficulty of moving any of the heaters from one room or area to another.
Compare the prices for the heaters and the durability. Consider that paying a little more now for a unit that will last twice as long as the cheaper one will save money in the long run.
Compare the operating cost and efficiency. Check the heater's package to see what energy-use rating is listed, or ask the retailer to let you see the instruction package from inside the box. Log on to the Department of Energy's energy-savers site, if no information is included with the heater, to calculate the cost of using each type of heater you are considering for purchase.
Compare the safety features and reputation of each unit. Read the list of safety features on the heater packaging. Look for issues such as the possibility of the heater tipping over, hot surfaces or places a child could stick her hand inside to touch heating disks or rods and the recommended time a heater can be used before turning it off to cool. Check the Consumer Product Safety Commission for recalls on certain models of each type of heater and the reasons for recalls to determine whether you feel safe buying one of the two types of heaters.