Ceramic heater

In another type of heating element, the honeycomb disk, the block of ceramic is perforated with numerous holes.

[6] In the 1980s, some manufacturers were making advertising claims that critics such as New York Times writer Matthew L. Wald found dubious.

However, in its 1989 review, the testing organization did treat ceramic heaters as a separate category, as a response to manufacturer claims.

Consumers Union did find ceramic heaters' characteristic of sharply reducing heat output when airflow was blocked to be a useful safety feature.

However, it found that the tip-over switches and overheat-protection sensors included in many conventional heaters also provided good safety.