Furnace Repair in Lake Worth, Florida: How to Fix 9 Routine Troubles

HVAC man working on a furnace

When your HVAC system won’t kick on, doing your own furnace repair in Lake Worth, Florida, can appear daunting.

There are a few fast, inexpensive solutions you can take on by yourself to prevent a HVAC repair bill.

If your furnace refuses to turn on, won’t stay on or won’t fire, try the troubleshooting guide below prior to contacting an HVAC professional.

If you realize you need support from a heating and cooling professional and live in Lake Worth, Smyth Air Conditioning Inc can provide assistance to you. We have the ability to repair most types of HVAC systems.

CALL NOW 561-533-6066

If it’s time for a new heating system, we also do furnace installation.

While you’re talking with us, think about a routine furnace maintenance plan from Smyth Air Conditioning Inc that may help you avoid problems down the road. A team member can let you know how regularly your HVAC system needs to be examined by one of our NATE-certified professionals.

Go through our simple list as follows to start troubleshooting your heating system. Most of these steps don’t have the requirement of mechanical abilities.

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1. Look at the Thermostat

To begin, ensure your thermostat is signaling your furnace to ignite.

Digital Thermostat

  • Change the batteries if the display is empty. If the digital display is mixed up, the thermostat may need to be swapped out.
  • Ensure the switch is set to “heat” instead of “off” or “cool.”
  • Make sure the program is showing the correct day and time and is programmed to “run.” If you’re having a hard time overriding the schedule, regulate the temperature by using the up/down arrows and pressing the “hold” button. This will force the furnace to start if thermostat scheduling is an issue.
  • Turn the temperature setting to 5 degrees above the temperature of the room.

If your heating hasn’t kicked on within several minutes, make certain that it has power by switching the fan switch from “auto” to “on.” If the fan doesn’t operate, your furnace might not have power.

Smart Thermostat

If you utilize a smart thermostat—for example one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting is very model-specific. Refer to the manufacturer’s website for help. If you still can’t get your Wi-Fi thermostat to function, reachl us at 561-533-6066 for heating and cooling service.

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2. Examine Breakers and Switches

Next, you should verify your breaker and furnace switch are on.

  • Locate your residence’s main electrical panel. If you don’t know where it is, search for a gray metal box in your basement, garage or closet.
  • Make certain that your hands and feet aren’t moist before touching the panel or breakers.
  • Find the breaker titled “furnace” or “heat,” and ensure it’s turned “on.” If you find that the breaker tripped, it will be in the middle or “off” area.
  • Using one hand, quickly turn the breaker to the “on” position. If the breaker trips right away and pops back to “off,” don’t try to reset it and contact a professional from Smyth Air Conditioning Inc at 561-533-6066 quickly.

It doesn’t matter how old your furnace is or what brand it is, it has at minimum one regular wall switch located on or by it.

  • Make sure the switch is flipped up in the “on” position. If it was switched off, expect your furnace to take up to five minutes to start. (If you’re unaware of where to find your furnace, check your basement, garage or utility closet. It may also be in a crawl space or attic.)
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3. Get a New Air Filter

When it comes to heater breakdowns, a filthy, blocked air filter is frequently to blame.

If your filter is too dusty:

  • Your furnace won’t keep heating your home, or it could get too hot from limited airflow.
  • Your gas costs may go up because your heat is turning on more than it should.
  • Your heater could fail sooner than it should due to the fact a filthy filter triggers it to work harder.
  • Your heater can be cut off from power if an extremely clogged filter is the cause of a tripped breaker.

Based on what make of heating system you use, your air filter will be in the interior of the blower compartment of your heating system, an attached filter case or wall-mounted return air grille.

To swap out your filter:

  • Turn off your heater.
  • Take out the filter and angle it toward the light. If you can’t view light through it, use a new one.
  • Insert the new filter with the arrow facing toward the furnace to avoid damage.

Flat filters need to be replaced monthly, while pleated filters should work around three months. You may also use a washable filter that will work for about 10 years. If you have children or pets, you might have to replace your filter more frequently.

To make changing your filter go more quickly down the line, draw with a permanent writing tool on your furnace housing or ductwork to list the airflow direction and filter size.

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4. Look at the Condensate Pan

Also known as drain pans, condensate pans capture liquid your heating system pulls from the air.

If moisture is leaking from within your furnace or its pan is overflowing, follow these steps.

  • If your pan includes a drain (look for a PVC pipe), double-check that it’s clear. If it needs to be drained, use a special pan-cleaning tablet you can get at home improvement or hardware shops.
  • If your pan has a pump, check the float switch. If the lever can’t be moved from the “up” position with standing water in the pan, call us at 561-533-6066 , because you will possibly have to get a new pump.
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5. Look for Furnace Error Codes

If failures continue, look at your heating system’s plastic window to check the blower motor’s status. Depending on the model, the light may also be attached on the outside of your heater.

If you notice anything except a solid, colored light or twinkling green light, reach us at 561-533-6066 for HVAC service. Your heater might be communicating an error code that is calling for expert help.

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6. Clean the Flame Sensor

If your heater tries to run but shuts off without blowing heated air, a grimy flame sensor might be at fault. When this takes place, your heater will try to start three times before a safety device shuts it down for around an hour.

If you feel comfortable with removing the panels from your furnace, brushing off your flame sensor is a job you have the ability to do on your own. Or, one of our heating service specialists can do it for you.

If you are fine with cleaning the sensor personally, you need:

  • A 1/4” hex screwdriver or wrench
  • Piece of light grit sandpaper, steel wool or emery cloth
  • An unused paper towel

As the next step:

  • Disable the furnace’s power by using its wall switch or breaker. If your furnace’s gas valve isn’t electric, you must turn off the gas as well.
  • Take off the furnace’s front panel and trace the wire to the flame sensor.
  • Take off the rod and use your sandpaper, steel wool or emery cloth to lightly scrub the metal rod.
  • Clear the rod with a paper towel.
  • Remount the sensor.
  • Replace the furnace doors.
  • Restore power to the furnace. It may run through a set of examinations before continuing usual operation. If your furnace doesn’t ignite, the sensor might need to be replaced or something else may be causing a problem. If this occurs, call us at 561-533-6066 for heating and cooling repair assistance.
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7. Reignite the Pilot Light

If you are using an older furnace, the pilot light could be extinguished. To reignite it, find the instructions on a sticker on your heating system, or use these guidelines.

  • Locate the switch below your heating system labeled “pilot,” “on” and “off.”
  • Move the switch to the “off” position.
  • Wait at least five minutes to prevent creating a fire.
  • Move the switch to “pilot.”
  • Hold down the “reset” switch as you bring the flame of a long lighter to the pilot light opening.
  • Release the “reset” button once the pilot light is ignited.
  • If you have tried the list twice and the pilot light still won’t ignite or keep lit, call us at 561-533-6066 for furnace service.

condensate pan icon

Check Your Fuel Supply

Try switching on an additional gas appliance. If it doesn’t work, your natural gas delivery might be shut off, or you might have run out of propane.

We Can Provide HVAC Repair

Gone through our troubleshooting guide but your furnace still won’t operate?

Reach us today at 561-533-6066 or contact us online. We’ll come to your house and pinpoint the problem.


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