Proper Way to Install a Furnace Filter

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Furnace filters clean the air before it reaches the interior blower fan mechanism. This serves a twofold purpose: it removes dust from the interior of the home and protects the equipment inside the furnace. A clogged furnace filter makes the blower motor work harder to pull air through the system. The harder the motor must work, the more electrical energy it consumes. This will increase your monthly electrical utility cost. Properly installing the air filter saves money, keeps the mechanism clean and creates a healthy home environment when the furnace is under operation.

Things You'll Need

  • Plastic trash bag
  • Vacuum cleaner with brush attachment (optional)
  • Remove all electrical power to the furnace system. This may entail shutting off the circuit breaker or pulling the fuses that supply power to the furnace.

  • Remove the return air grill to the furnace. Depending on your particular installation, the return grill may be located in a central hallway or on the furnace. Pull the grill from the filter housing.

  • Open the plastic trash bag. Pull the old filter from the housing. Slip it inside the plastic trash bag. Tie the top of the bag to eliminate dust.

  • Inspect the interior of the filter housing and metal grill. If a heavy dust layer resides on the metal surface, clean with a vacuum cleaner and brush attachment.

  • Orientate the new filter into the housing so the directional arrows, on the sides of the filter, are pointing in toward the opening.

  • Replace the metal grill. Turn on the electrical power.

Tips & Warnings

  • Clean the interior of the air filter housing at least once a year with a vacuum cleaner and brush attachment. Removing accumulated debris from tight crevices will increase the overall life and efficiency of the air filter.
  • Check the condition of the air filter every month during heavy winter usage. At the very least, the filter should be changed every three months to maintain minimal efficiency.

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References

  • Photo Credit Jupiterimages/Comstock/Getty Images
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