91.   If your heating system is big enough, it can be extended to the porch.

92.   In a modern home these are auxiliary heating systems at best, and are used by most homeowners to supplement another heating system.

93.   In all heating systems, a blocked chimney can let smoke back into a house.

94.   In addition, the heating system has been improved.

95.   In extreme cases, it may be necessary to consult a heating specialist who can evaluate your home heating system to determine if it is operating efficiently.

96.   In fact, the hot water heating system can be left with water, if a non-toxic antifreeze is put in it.

97.   In late summer, make arrangements for heating system to be checked or replaced and chimneys to be cleaned.

98.   In the living room, a pair of wood-framed grates hide the heating system on one side, and provide storage space on the other.

99.   In winter, I would not suggest an electric heater, but what about extending your present heating system?

100.   It is important for the homeowner to understand his heating system so that it can be maintained properly.