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Quiz: Could you fix your faulty gas furnace?
by Staff
A gas furnace is an integral part of many homes. If your furnace quits, could you repair it -- or will you spend a fortune on a service call? Quiz yourself to see if you could fix your gas furnace and save yourself time and money.

If you enter your home and smell gas, what should you do?

  • Go to the basement and close all doors and windows.
  • Find the source of the leak and plug it up.
  • Leave home and call the gas company or fire department.

Which of the following would cause a gas furnace to stop working?

  • It's very cold outside.
  • The pilot light is out.
  • You ran out of gas.

Where should you first look to find the manufacturer's instructions for your furnace?

  • online
  • on the furnace itself
  • on the back of the furnace purchase receipt

What is the purpose of a furnace's shut-off?

  • to turn off the heat
  • to prevent gas leaks
  • to turn off the pilot light

Which of the following is an advantage of using natural gas rather than fuel oil?

  • Gas burns cleaner.
  • Gas is less flammable than oil.
  • Gas smells better than oil.

What is likely to occur if the pilot light is set too low?

  • The furnace won't turn on.
  • The fire will go out.
  • The furnace will overheat.

If you've set the furnace to the temperature you want but aren't getting the result you want, which of the following components should you check?

  • filter
  • fan blade
  • flux capacitor

What is a thermocouple?

  • very concentrated gas
  • insulating blanket
  • safety mechanism on the furnace

When fastening a nut into place, what should you be careful not to do?

  • overtightening it
  • removing the shell
  • stripping the bolt

What is the function of the limit switch?

  • to save fuel
  • to control humidity
  • to turn off the burner when the main chamber gets too hot

What is the appropriate temperature for the low setting on the limit control safety feature?

  • 0 degrees Fahrenheit (minus 17 degrees Celsius)
  • 32 degrees Fahrenheit (0 degrees Celsius)
  • 90 degrees Fahrenheit (32 degrees Celsius)

What is the appropriate temperature for the high setting on the limit control safety feature?

  • 32 degrees Fahrenheit (0 degrees Celsius)
  • 115 degrees Fahrenheit (46 degrees Celsius)
  • 212 degrees Fahrenheit (100 degrees Celsius)

If you've attempted to relight the pilot light and it won't stay lit, which of the following might be the cause?

  • lack of willpower
  • clogged opening
  • lack of fuel

Before attempting to clean the pilot light, which of these steps is mandatory?

  • Turn off the power to the house.
  • Turn off all electronics and appliances.
  • Turn off the gas supply.

What is the most effective way of cleaning a clogged opening?

  • Use a moist towel.
  • Use a thin wire.
  • Use a solvent.

A sputtering sound coming from your furnace suggests what sort of problem?

  • gas leak
  • blown fuse
  • lack of gas

If no gas is flowing into the furnace, what should you do first?

  • Call a technician.
  • Check the gas valve.
  • Call the fire department.

Which of these combinations can be used to check for a gas leak?

  • chewing gum and duct tape
  • dish detergent and water
  • oil and vinegar

Which tool should be used to tighten a leaky connection?

  • pliers
  • clamps
  • pipe wrench

Which of the following scenarios does NOT require a professional?

  • faulty electric pilot light
  • broken gas line
  • setting the thermostat