Why Is My Furnace Continuously Clicking?

Why Is My Furnace Continuously Clicking?


It isn’t uncommon for a fuel furnace to make a clicking noise when it first begins up. Nonetheless, in case you proceed to listen to a clicking noise past the startup cycle, you have to to handle the underlying trigger. As advisable inside this AC restore article catalog, you must first examine the system after which take steps to treatment the issue. In case you don’t really feel assured that you would be able to full any of the steps given to appropriate the issue, it’s at all times greatest to contact an HVAC skilled for help.

In some circumstances, the click noise is created by the failure of the ignitor to mild. This may be as a result of your flame sensor has gotten soiled or your valve is defective. Different causes could possibly be {that a} fan blade has gotten damaged in some method, your motor bearings have change into too worn to perform correctly, or you might have free duct seams. In any case, a repeated clicking noise ought to be purpose sufficient to name for fast service. In some circumstances, the issue ends in a fuel leak, so it’s best to have it inspected by an expert instantly.

  1. Fuel Furnace

Attainable causes of a clicking sound coming from a fuel furnace embrace the next:

Fuel valve – This valve can change into clogged or damaged; fuel can’t get by means of. The ignitor will click on constantly because it makes an attempt to mild the system.

Flame Sensor And Thermocouple – Each of those parts let the valve that permits fuel to movement when it ought to open. If both is soiled or failing, it’ll fail to sign correctly, and the ignitor will proceed clicking because it reattempts to mild fuel that’s not current.

Ignitor Flame – A weak flame could also be too cool to ignite the fuel it comes into contact with.

Fan Or Inducer – If a fan blade turns into damaged, it could possibly create a clicking noise that may proceed till it’s changed.

Bearings – When motor bearings get too worn to carry out correctly, they may begin to make a clicking noise.

Ductwork – If the click noise sounds as whether it is originating in your ductwork, it could possibly be a seam that has loosened or an object is obstructing the ductwork.

  1. How To Cease Your Fuel Furnace From Clicking

  1. The very first thing you must verify is whether or not you might have fuel. If there isn’t a fuel, then it’s inconceivable in your furnace to ignite. Verify your fuel stage to make sure there’s enough gas within the tank.
  2. See in case your furnace is getting fuel by means of the fuel line. A fast means to do that is to verify different fuel home equipment and see if they’re working. If they’re, then the issue lies particularly along with your furnace.
  3. Study the fuel valve to see whether it is caught. When the fuel valve will get soiled, it could possibly get stalled. Gently pushing the mechanism with the tip of a screwdriver could also be sufficient to get it transferring once more. If this fails to appropriate the issue, you should use a multimeter to find out whether or not the valve is being powered sufficiently in order that it could possibly function. In case you aren’t comfy with this or lack the correct instruments, you’ll be able to name an HVAC skilled to assist kind out the issue.
  4. Scrub the flame sensor. This sensor detects whether or not there’s a flame within the furnace. If it could possibly’t carry out this operation, the built-in security mechanism will shut off the system. An unclean sensor could not acknowledge a flame even when one is current. You have to to close the facility off to the furnace previous to taking out the sensor to scrub it. Upon getting completed so, gently clear it with very mild grit sandpaper.
  5. Confirm the ignitor is functioning. Too little airflow from the inductor would possibly imply that the stress change has failed or that the ignitor doesn’t have the facility it wants for the furnace to mild. You’ll be able to take a look at whether or not the ignitor is getting energy with a multimeter.
  6. Be sure that nothing is obstructing the flue pipe and that the stress change has not failed.
  7. Draft inducer fan cleansing and calibration. Verify to make sure there are not any free or dirty fan blades that will trigger the click sounds. To correctly clear these components and confirm that the blades are in good order, you’ll have to take away the fan for examination.
  8. Change failed bearings. As soon as the draft inducer fan has been eliminated, it is possible for you to to verify the bearings within the blower. If they’re worn-looking or have been broken, they need to get replaced.
  9. Lubricate any parts that want it.
  10. Verify your ducts for any cracks, cut up seams, holes, or obstruction
  1. Electrical Furnace

Whereas most owners who complain of listening to clicking noises have a fuel furnace, it isn’t unparalleled to expertise it with an electrical furnace. Electrical furnaces even have a starter system that may click on because the unit kicks on, and that is nothing to be involved about. Via continued clicking gained’t put you at risk of a fuel leak, nevertheless it ought to nonetheless be examined to forestall further issues.

The commonest purpose for clicking from an electrical furnace is cut up or cracked ductwork that wants restore or alternative or components which have come free and are clicking towards different components because the system operates. As a result of this technique is electrical, it’s normally greatest to contact an expert to evaluate the state of affairs and make any crucial repairs to get rid of the click noise you might be listening to.

The one motion you’ll be able to actually take your self is to search for any free components or obstructions that could be inflicting a clicking noise. It may be so simple as having an object caught in a register that’s clicking towards the steel of the vent as the warmth strikes it about. That is very true in houses with babies who could drop or place objects within the openings.


Normally, there are a number of the explanation why a furnace might be always clicking. Within the brief time period, you also needs to verify your ductwork for any cut up seams or cracks which have developed; as a result of there’s a lot warmth flowing by means of the ducts throughout hotter months, these issues usually are not an uncommon incidence and might be simply repaired with duct tape or sealants.

You are able to do this your self if you’ll be able to correctly entry the realm and have the merchandise you want, however in some circumstances, this may solely be a short lived repair, and you have to an authorized technician to make extra everlasting repairs or replacements, it doesn’t matter what sort of furnace you personal.

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