Gas Supply

• A natural gas furnace requires access to a natural gas pipeline. If your home does not already have access to such a supply, running a dedicated pipe can be a costly and time-consuming experience.
  
  

Electrical Wiring

• An electric furnace requires its own dedicated high-ampere circuit. Most full-home heating appliances can draw enough current to overload normal household circuit breakers.
  
  

Speed

• A natural gas furnace heats much more quickly than an electric one. Electric resistance coils must take time to build up heat, whereas natural gas ignites and burns immediately, warming your home much faster.
  
  

Cost

• In most cases, heating a home with electricity is more expensive than heating with natural gas, although prices can depend on the market and other external factors.
  
  

Activation

• A gas furnace must have its supply turned on every winter, or else be kept connected year-round, racking up bills for months in which it is not used. An electric furnace can simply be switched on when needed, as it uses the normal household current.