Air Conditioners:  Air conditioners that are operating continuously in a dusty area can cause fires when dust settles over electrical components such as capacitors.

Clothes Dryers:  Any combustible material which comes into contact with the element on the front or the back of the drying drum can ignite and cause a fire.  Also, clean the lint filter on a regular basis, or lint can flow back into the interior of the dryer and hit the element and start a fire.

Dishwashers:  The major cause of fire from dishwashers is from moisture contacting the conductors.  Check to see if the plastic components that release detergent or finishing agents on the interior door have become brittle.  If that is the case, water can break through the brittle plastic and come into contact with the conductors of the washer.

Fax Machines:  Older generation fax machines generate a lot of heat while on standby because of the thermal print head.  If a combustible material covers the fax machine, the heat from the printer head could ignite a fire. 

Water Heaters:  After time, heaters can develop leaks from several areas such as the inlets and outlets for the water.  The main cause of fire from water heaters is water coming into contact with the electrical components of the heater.  Check to make sure your hot water heater is stable and without leaks.

Microwave Ovens:  Dried out foods or materials can ignite when a microwave excites molecules, and could lead to fires.  Also, metal objects can cause severe sparking inside a microwave which can cause a fire.

Televisions and Computer Monitors:  There may be a chance your television or computer monitor has a solder defect, which are called dry joints.  Dry joints are a major problem, and can lead to a fire.  Check to see if a recall has be issued for your monitor or television

Refrigerators & Freezers:  As mentioned before, fire can occur when moisture comes into contact with the electrical part of the appliance.  With refrigerators and freezers, having a leak where there is moisture can cause a fire.  Check to make sure there aren't any punctures or leaks in your refrigerator or freezer.