Furnace Repair in Grand Prairie, TX

HVAC man working on a furnace

When your furnace won’t work, doing your own furnace repair in Grand Prairie, TX, can feel daunting.

There are a couple of time-saving, inexpensive things you can take on by yourself to prevent a heating service bill.

If your heater won’t kick on, won’t keep running or won’t light, try the troubleshooting list below in advance of calling an HVAC professional.

If you come to the realization you need help from a heating and cooling professional and live in Grand Prairie, Bon Air Service Company is able to assist you. We are able to repair most types of HVAC systems.

CALL NOW 972-332-1028



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

While you’re talking with one of our team members, think over an annual furnace maintenance plan from Bon Air Service Company that could help you avoid breakdowns down the line. Our team can inform you about how often your HVAC system ought to be inspected by one of our NATE-certified professionals.

Follow our straightforward guide below to start troubleshooting your HVAC system. A great deal of these procedures don’t have the requirement of mechanical abilities to complete your furnace repair.

Furnace Repair Checklist

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1. Inspect the Thermostat

First, ensure your thermostat is instructing your furnace to turn on.

Digital Thermostat

  • Replace the batteries if the display is empty. If the digital display is scrambled, the thermostat may need to be changed.
  • Make sure the control is set to “heat” rather than “off” or “cool.”
  • Ensure the program is displaying the right day and time and is scheduled to “run.” If you’re having trouble getting out of the schedule, set the temperature by using the up/down arrows and using the “hold” button. This will cause the furnace to start if thermostat is causing trouble.
  • Set the temperature setting to 5 degrees warmer than what the room temperature currently is.

If your furnace hasn’t started within several minutes, ensure it has electricity by toggling the fan switch from “auto” to “on.” If the fan doesn’t operate, your furnace may not have power.

Smart Thermostat

If you utilize a smart thermostat—like one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting is very model-specific. Check the manufacturer’s website for support. If you still can’t get your Wi-Fi thermostat to operate, contact us at 972-332-1028 for heating and cooling service.

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2. Examine Breakers and Switches

Next, confirm your breaker and furnace switch are on.

  • Find your main electrical panel. If you don’t know where it is, keep an eye out for a silver metal box in your basement, garage or closet.
  • Ensure your hands and feet aren’t moist in advance of opening the panel or breakers.
  • Look for the breaker labeled “furnace” or “heat,” and double-check it’s switched “on.” If the breaker has tripped, it will be in the middle or “off” area.
  • Using one hand, quickly switch 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 Bon Air Service Company at 972-332-1028 immediately.

No matter your furnace’s age or brand, it has at least one regular wall switch set on or near it.

  • Make certain the switch is facing up in the “on” position. If it was turned off, expect your furnace to take up to five minutes to ignite. (If you’re unaware of where to find your furnace, look in 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 we think about heater issues, a dirty, blocked air filter is often the top offender.

If your filter is too dusty:

  • Your heating system won’t be able to stay on, or it could overheat from limited airflow.
  • Your utility bills might go up because your heating system is turning on more than it should.
  • Your heating system might stop working sooner than it should since a dirty filter triggers it to overwork.
  • Your heater can be disconnected from power if an overly filthy filter is the cause of a tripped breaker.

Depending on what make of heater you have, your air filter is located inside the blower compartment of your furnace, an attached filter case or wall-mounted return air grille.

To replace your filter:

  • Turn off your heater.
  • Pull out the filter and hold it up to the light. If you can’t notice light through it, replace it.
  • Insert the new filter with the arrow motioning toward the heating system to keep damage from happening.

Flat filters should be replaced every month, while pleated filters should last about three months. If you have children or pets, you may have to change your filter more frequently.

To make the procedure go more quickly down the road, use a permanent writing tool on your furnace outside or ductwork to list the airflow direction and filter size.

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4. Check the Condensate Pan

Otherwise known as drain pans, condensate pans capture liquid your heating system draws from the air.

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

  • If your pan includes a drain (look for a PVC pipe), check that it’s clear. If it needs to be drained, get a special pan-cleaning tablet you can purchase at home improvement or hardware shops.
  • If your pan contains a pump, check the float switch. If the lever is jammed “up” with water in the pan, call us at 972-332-1028, because you will likely have to install a new pump.
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5. Look for Heating Error Codes

If faults persist, look at your heater’s plastic window to confirm the blower motor’s status. Dependent on the model, the light could also be fixed on the surface of your furnace.

If you see anything else besides a solid, colored light or blinking green light, reach us at 972-332-1028 for HVAC service. Your furnace could be communicating an error code that requires specialized service.

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6. Clean the Flame Sensor

If your furnace makes an effort to operate but switches off without putting out heat, a dirty flame sensor could be to blame. When this occurs, your heating system will make an attempt to start three times before a safety feature powers it down for about an hour.

If you feel comfortable with taking the panels off your heating system, cleaning your flame sensor is a task you can do yourself. Or, one of our heating service specialists has the ability to finish it for you.

If you want to clean the sensor yourself, you need:

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

As the next step:

  • Shut off the furnace’s power with its wall switch or breaker. If your gas valve isn’t electric, you will need to shut off the gas in addition.
  • Take off the furnace’s front panel and follow the wire to the flame sensor.
  • Take off the rod and use your sandpaper, steel wool or emery cloth to gently scrub the metal rod.
  • Wipe off the rod with a paper towel.
  • Put the sensor back in.
  • Secure the furnace doors.
  • Switch the furnace’s power back on. It might proceed through a set of inspections before proceeding with usual operation. If your heater doesn’t ignite, the sensor may need to be replaced or something else may be creating an issue. If this takes place, contact us at 972-332-1028 for heating and cooling repair support.
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7. Relight the Pilot Light

If you are using an aging furnace, the pilot light could be turned off. To light it, locate the directions on a sticker on your furnace, or follow these steps.

  • Look for the toggle beneath your heating system labeled “pilot,” “on” and “off.”
  • Push the switch to the “off” position.
  • Don’t do anything for at least five minutes to limit the possibility for sparking a fire.
  • Push the knob to “pilot.”
  • Press the “reset” switch as you move the flame of a long lighter to the pilot light opening.
  • Let go of the “reset” switch once the pilot light is lit.
  • If you have followed the guide twice and the pilot light still won’t burn or keep ignited, get in touch with us at 972-332-1028 for furnace service.

condensate pan icon

Check Your Fuel Delivery System

Try turning on another gas appliance. If it doesn’t work, your natural gas service could be turned off, or you may have run out of propane.

We Can Assist With Furnace Servicing

Went through our troubleshooting guide but your heater still refuses to run?

Reach us today at 972-332-1028 or contact us online. We’ll visit your house and pinpoint the problem.

CALL FOR SERVICE NOW 972-332-1028

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