Furnace Repair in Scottsboro, Alabama: How to Repair 9 Routine Problems

HVAC man working on a furnace

When your heater won’t work, doing your own furnace repair in Scottsboro, Alabama, can seem daunting.

There are a few fast, inexpensive things you can take care of on your own to prevent a heating repair call.

If your heating system refuses to kick on, won’t run consistently or won’t light, try the troubleshooting list below before calling an HVAC pro.

If you come to the realization you need support from a heating and cooling expert and live in Scottsboro, Southern Heating & Cooling Inc. can help you. We can repair most makes of heaters and also offer emergency furnace repair.

CALL NOW 256-574-1300



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

While you’re in touch with our team, consider a regular furnace maintenance plan from Southern Heating & Cooling Inc. that may help you avoid repairs down the road. Our team can let you know how regularly your heater should be examined by one of our NATE-Certified professionals.

Follow our straightforward list below to get to work on troubleshooting your heater. The majority of these processes don’t have a need for mechanical skills.

check thermostat icon

1. Inspect the Thermostat

To begin, make certain that your thermostat is signaling your heater to turn on.

Digital Thermostat

  • Change the batteries if the monitor is not displaying anything. If the digital display is jumbled, the thermostat may need to be replaced.
  • Make certain that the button is on “heat” as opposed to “off” or “cool.”
  • Make certain the program is showing the correct day and time and is scheduled to “run.” If you’re having problems getting out of the program, regulate the temperature with the up/down arrows and using the “hold” button. This will cause the heat to start if thermostat settings are trouble.
  • Increase the temperature setting to 5 degrees hotter than the room temperature.

If your heater hasn’t kicked on within a couple minutes, make sure it has electricity by changing the fan switch from “auto” to “on.” If the fan doesn’t start, your heater may not have power.

Smart Thermostat

If you utilize a smart thermostat—such as one designed by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting will be determined by the model you have. Refer to the manufacturer’s website for support. If you still can’t get your Wi-Fi thermostat to function, calll us at 256-574-1300 for heating and cooling service.

breaker icon

2. Inspect Breakers and Switches

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

  • Look for your home’s main electrical panel. If you don’t know where it is, keep an eye out for a metallic metal box in your basement, garage or closet.
  • Make sure your hands and feet aren’t wet in advance of opening the panel or breakers.
  • Look for the breaker titled “furnace” or “heat,” and make sure it’s moved to “on.” If the breaker has tripped, it will be in the middle or “off” spot.
  • Using one hand, steadily switch the breaker to the “on” position. If the breaker trips right away and pops back to “off,” leave it alone and contact a team member from Southern Heating & Cooling Inc. at 256-574-1300 immediately.

It doesn’t matter how old your furnace is or what brand it is, it has no less than one ordinary wall switch positioned on or by it.

  • Ensure the switch is moved up in the “on” placement. If it was turned off, expect your furnace to take up to five minutes to ignite. (If you don’t know where your furnace is located, check your basement, garage or utility closet. It might also be in a crawl space or attic.)
air filter icon

3. Buy a New Air Filter

When we consider furnace breakdowns, a filthy, blocked air filter is regularly the top culprit.

If your filter is too dusty:

  • Your heat won’t keep heating your home, or it might get too hot from limited airflow.
  • Your heating bills might go up because your heating system is switching on more than it should.
  • Your heat could stop working prematurely due to the fact a dirty filter causes it to work harder.
  • Your heating system might be cut off from power if an overly filthy filter causes the breaker to trip.

While it depends on what model of heater you use, your air filter will be in the interior of the blower compartment of your furnace, an attached filter case or wall-mounted return air grille.

To swap out your filter:

  • Switch off your heating system.
  • Remove the filter and hold it up to the light. If you can’t view light through it, get a new one.
  • Put in the new filter with the arrow motioning toward the heating system to avoid damage.

Flat filters should be replaced once a month, while pleated filters should last around three months. You may also buy a washable filter that will work for about 10 years. If you have children or pets, you could have to put in a new filter more frequently.

To make the procedure go more quickly in the future, use a permanent marker on your heating system housing or ductwork to show the airflow direction and filter size.

condensate pan icon

4. Examine the Condensate Pan

Commonly known as drain pans, condensate pans catch liquid your heating system draws from the air.

If water is dripping from your heating system or its pan has standing water in it, use these recommendations.

  • If your pan includes a drain (look for a PVC pipe), double-check that it isn’t clogged. If it needs to be drained, use a special pan-cleaning tablet you can purchase at home improvement or hardware stores.
  • If your pan uses a pump, check the float switch. If the button is jammed “up” with liquid in the pan, reach us at 256-574-1300, because you will likely have to buy a new pump.
error codes icon

5. Watch for Furnace Error Codes

If faults keep on happening, peek at your heating system’s plastic window to confirm the blower motor’s status. Subject to the type, the light might also be attached on the surface of your heater.

If you notice anything except an uninterrupted, colored light or flickering green light, reach us at 256-574-1300 for HVAC service. Your heater may be emitting an error code that is calling for professional assistance.

flame sensor icon

6. Scrub the Flame Sensor

If your heating system attempts to run but switches off without distributing warmth, a grimy flame sensor can be responsible. When this takes place, your furnace will make an attempt to start three times before a safety mechanism shuts it down for approximately an hour.

If you feel confident with opening up your furnace, cleaning your flame sensor is a job you have the ability to do on your own. Or, one of our heating service professionals is able to do it for you.

If you want to clean the sensor yourself, 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:

  • Turn off the heater’s power with its wall switch or breaker. If your furnace’s gas valve isn’t electric, you have to shut off the gas along with it.
  • Remove the heater’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 carefully clean the metal rod.
  • Clean the rod with a paper towel.
  • Remount the sensor.
  • Put the furnace doors back on.
  • Turn the furnace’s power back on. It may go through a sequence of examinations before resuming normal operation. If your furnace doesn’t start, the sensor could need to be replaced or something else could be wrong. If this takes place, call us at 256-574-1300 for heating and cooling repair help.
pilot light icon

7. Relight the Pilot Light

If you have an outdated heater, the pilot light could be turned off. To relight it, look for the guide on a label on your furnace, or follow these steps.

  • Find the switch on the bottom of your furnace labeled “pilot,” “on” and “off.”
  • Move the switch to the “off” position.
  • Wait at least five minutes to avoid creating a fire.
  • Move the switch to “pilot.”
  • Push the “reset” button 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 ignited.
  • If you have gone through the guide twice and the pilot light still won’t ignite or remain ignited, contact us at 256-574-1300 for furnace service.

condensate pan icon

Double-Check Your Gas Delivery System

Try switching on a second gas appliance. If it doesn’t operate, your natural gas service may be switched off, or you could be out of propane.

We Can Assist With HVAC Repair

Used our troubleshooting checklist but your furnace still doesn’t heat?

Call us now at 256-574-1300 or contact us online. We’ll come to your house and figure out the trouble.

CALL FOR SERVICE NOW 256-574-1300

Request Service