Furnace Repair in Stuart, Florida: How to Handle 9 Routine Issues

HVAC man working on a furnace

When your furnace won’t start, doing your own furnace repair in Stuart, Florida, can appear daunting.

There are a couple of quick, reasonable things you can do by yourself to prevent a HVAC repair call.

If your heater refuses to kick on, won’t stay on or won’t fire, take a look at the troubleshooting checklist below prior to calling an HVAC expert.

If you realize you need help from a heating and cooling professional and live in Stuart, Breathe Healthier Air is able to assist you. We have the ability to repair most makes of heaters.

CALL NOW 772-600-7151

If you need a new furnace, we also do furnace installation.

While you’re chatting with one of our team members, consider an annual furnace maintenance plan from Breathe Healthier Air that could help you avoid breakdowns down the line. A team member can inform you about how regularly your heating system should be inspected by one of our NATE-Certified professionals.

Use our straightforward checklist as follows to start troubleshooting your HVAC system. The majority of these processes don’t have the requirement of mechanical know-how.

check thermostat icon

1. Look at the Thermostat

First, make certain that your thermostat is telling your heater to turn on.

Digital Thermostat

  • Replace the batteries if the monitor is not displaying anything. If the digital screen is messed up, the thermostat might need to be changed.
  • Ensure the control is switched to “heat” rather than “off” or “cool.”
  • Ensure the program is showing the right day and time and is scheduled to “run.” If you’re having a hard time overriding the program, regulate the temperature with the up/down arrows and pressing the “hold” button. This will force the furnace to start if thermostat programming is causing an issue.
  • Turn the temperature setting to 5 degrees hotter than the room temperature.

If your heating hasn’t turned on within several minutes, ensure it has juice by switching the fan switch from “auto” to “on.” If the fan doesn’t start, your furnace may not have power.

Smart Thermostat

If you have a smart thermostat—such as one designed by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting will depend on your model. Refer to the manufacturer’s website for support. If you aren’t able to get your Wi-Fi thermostat to operate, calll us at 772-600-7151 for heating and cooling service.

breaker icon

2. Inspect Breakers and Switches

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

  • Locate your residence’s main electrical panel. If you aren’t sure where it is, search for a metallic metal box in your basement, garage or closet.
  • Ensure your hands and feet are dry before opening the panel or breakers.
  • Locate the breaker titled “furnace” or “heat,” and ensure it’s moved to “on.” If you discover a tripped breaker, it will be in the middle or “off” area.
  • Using one hand, firmly flip the breaker to the “on” location. If the breaker immediately trips and pops back to “off,” don’t try to reset it and call an expert from Breathe Healthier Air at 772-600-7151 quickly.

Regardless of your furnace’s age or brand, it has no less than one standard wall switch set on or by it.

  • Ensure the switch is moved up in the “on” spot. If it was switched off, anticipate your furnace could take up to five minutes to start. (If you’re unaware of where your furnace is located, check your basement, garage or utility closet. It can also be in a crawl space or attic.)
air filter icon

3. Put in a New Air Filter

When we think about heating issues, a filthy, clogged air filter is frequently to blame.

If your filter is too grungy:

  • Your heater won’t keep heating your home, or it could overheat from restricted airflow.
  • Your energy expenses may be higher because your heater is turning on too often.
  • Your heater could stop working sooner than it should since a dirty filter causes it to work overtime.
  • Your heating system may be cut off from power if an overly clogged filter is the cause of a tripped breaker.

Based on what model of heating system you own, your air filter will be within 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 furnace.
  • Pull out the filter and angle it toward the light. If you can’t view light through it, use a new one.
  • Put in the new filter with the arrow facing toward the heating system to prevent damage.

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

To make changing your filter easier in the future, use a permanent writing tool on your furnace exterior or ductwork to list the airflow direction and filter size.

condensate pan icon

4. Examine the Condensate Pan

Commonly known as drain pans, condensate pans hold water your heater removes from the air.

If liquid is leaking from your furnace or its pan has too much water in it, follow these guidelines.

  • If your pan includes a drain (look for a PVC pipe), double-check that it’s clear. If it requires draining, drop in a special pan-cleaning tablet you can buy at home improvement or hardware stores.
  • If your pan has a pump, check the float switch. If the lever is jammed “up” with liquid in the pan, contact us at 772-600-7151, because you will likely have to get a new pump.
error codes icon

5. Watch for Furnace Error Codes

If malfunctions continue, look at your heating system’s plastic window to verify the blower motor’s status. Depending on the type, the light might also be fixed on the outside of your furnace.

If you notice anything except an uninterrupted, colored light or flickering green light, call us at 772-600-7151 for HVAC service. Your heater might be communicating an error code that requires pro help.

flame sensor icon

6. Clean the Flame Sensor

If your heater makes an effort to start but shuts off without distributing heat, a dusty flame sensor can be at fault. When this takes place, your heater will try to start three times before a safety feature turns it off for about an hour.

If you feel comfortable with opening up your furnace, gently scrubbing your flame sensor is something you can do on your own. Or, one of our heating service experts has the ability to do it for you.

If you are confident cleaning the sensor on your own, you need:

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


  • Turn off the heater’s power by using its wall switch or breaker. If you don’t have an electric gas valve, you must shut off the gas as well.
  • Take off the furnace’s front panel and trace the wire to the flame sensor.
  • Unscrew the rod and use your sandpaper, steel wool or emery cloth to carefully clean the metal rod.
  • Clear the rod with a paper towel.
  • Put the sensor back in.
  • Put the furnace doors back on.
  • Turn the furnace’s power back on. It could proceed through a set of examinations before resuming usual heating. If your furnace doesn’t ignite, the sensor may need to be replaced or something else could be creating an issue. If this takes place, call us at 772-600-7151 for heating and cooling repair help.
pilot light icon

7. Relight the Pilot Light

If you have an outdated heating system, the pilot light could be out. To relight it, locate the directions on a sticker on your furnace, or try these steps.

  • Find the toggle below your heating system marked “pilot,” “on” and “off.”
  • Push the switch to the “off” position.
  • Don’t do anything for at least five minutes to avoid starting a fire.
  • Turn the switch to “pilot.”
  • Push the “reset” button as you move the flame of a long lighter to the pilot light opening.
  • Release the “reset” switch once the pilot light is ignited.
  • If you have followed the guide twice and the pilot light still won’t ignite or stay burning, call us at 772-600-7151 for furnace service.

condensate pan icon

Double-Check Your Fuel Delivery System

Try using a second gas appliance. If it doesn’t operate, your natural gas source could be switched off, or you might have run out of propane.

We Can Help with HVAC Repair

Went through our troubleshooting sheet but your heating system still doesn’t work?

Contact us now at 772-600-7151 or contact us online. We’ll come to your house and diagnose the trouble.


Request Service