When your furnace won’t start, doing your own furnace repair in Crown Point, Indiana, can feel pretty overwhelming.
Fixing your furnace might feel like an overwhelming task when your heat won’t turn on. But it doesn’t have to be like that.
There are a few time-saving, low-cost fixes you can do on your own to skip a furnace repair call.
If your furnace won’t turn on, won’t stay on or won’t ignite, try the troubleshooting list below before contacting an HVAC professional.
If you find you need help from a heating and cooling pro and live in Crown Point, Struven Heating & Cooling can help you. We can repair most brands of heating systems and also provide emergency furnace repair.
If you’re ready for a new heating system, we also provide furnace installation.
While you’re in touch with us, think over a routine furnace maintenance plan that could help you avoid repairs in the future. We can tell you how frequently your furnace should be examined by one of our certified professionals.
Use our easy guide below to get started on troubleshooting your furnace. Most of these steps don’t require mechanical know-how.
Furnace Repair Checklist
1. Check the Thermostat
To begin, make sure your thermostat is instructing your furnace to ignite.
Digital Thermostat
Change the batteries if the screen is blank. If the digital screen is jumbled, the thermostat may need to be replaced.
Make sure the switch is set to “heat” rather than “off” or “cool.”
Ensure the program is displaying the right day and time and is set to “run.” If you’re having a hard time overriding the program, set the temperature by using the up/down arrows and press the “hold” button. This will make the furnace to start if thermostat programming is causing a problem.
Increase the temperature setting to 5 degrees warmer than the room temperature.
If your furnace hasn’t turned on within few minutes, make sure it has power by toggling the fan switch from “auto” to “on.” If the fan doesn’t begin to run, your furnace might not have power.
Smart Thermostat
If you have a smart thermostat—like one made by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting is very model-specific. Check the manufacturer’s website for help. If you still can’t get your Wi-Fi thermostat to work, call us at 219-292-0956 for heating and cooling service.
2. Examine Breakers and Switches
Next, you will need to check if your breaker and furnace switch are on.
Find your house’s main electrical panel. If you have no idea where it is, look for a gray metal box in your basement, garage or closet.
Make sure your hands and feet are dry before touching the panel or breakers.
Find the breaker labeled “furnace” or “heat,” and make sure it’s switched “on.” If the breaker has tripped, it will be in the middle or “off” position.
Using one hand, firmly switch the breaker to the “on” position. If the breaker immediately trips and pops back to “off,” leave it alone and get in touch with a professional from Struven Heating & Cooling at 219-292-0956 right away.
No matter your furnace’s age or brand, it has at least one standard wall switch located on or by it.
Make sure the switch is flipped up in the “on” position. If it was turned off, anticipate your furnace could take up to five minutes to start. (If you don’t know where to find your furnace, take a look at your basement, garage or utility closet. It could also be in a crawl space or attic.)
3. Replace the Air Filter
When it comes to furnace issues, a filthy, clogged air filter is frequently to blame.
If your filter is too dirty:
- Your furnace won’t stay on, or it could overheat from limited airflow.
- Your energy bills could increase because your furnace is turning on more than it should.
- Your furnace could fail sooner than it should because a dirty filter causes it to work harder.
- Your furnace can be disconnected from power if an overly dirty filter causes the breaker to trip.
Depending on what make of furnace you own, 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 furnace.
- Remove the filter and tilt it toward the light. If you can’t see light through it, get a new one.
- Put in the new filter with the arrow pointing toward the furnace to avoid damage.
Flat filters should be replaced every month, while pleated filters should last about three months. You can also use a washable filter that will last about 10 years. If you have children or pets, you may have to replace your filter sooner.
To make the process go more quickly in the future, use a permanent marker on your furnace housing or ductwork to list the airflow direction and filter size.
4. Inspect the Condensate Pan
Also known as drain pans, condensate pans hold water your furnace draws from the air.
If water is seeping out of your furnace or its pan has standing water in it, follow these steps.
- If your pan has a drain (look for a PVC pipe), check that it isn’t full. If it needs to be drained, use a special pan-cleaning tablet you can purchase at home improvement or hardware stores.
- If your pan contains a pump, check the float switch. If the switch is stuck “up” with standing water in the pan, contact us at 219-292-0956, because you will probably need a new pump.
5. Check for Furnace Error Codes
If malfunctions keep on happening, look inside your furnace’s plastic window to check the status of the blower motor. Depending on the model, the light could also be mounted on the outside of your furnace.
If you see anything except a steady, colored light or blinking green light, call us at 219-292-0956 for HVAC service. Your furnace may be communicating an error code that needs professional service.
6. Clean the Flame Sensor
If your furnace tries to start but shuts off without distributing heat, a dirty flame sensor could be to blame. When this takes place, your furnace will attempt to ignite three times before a safety feature shuts it down for about an hour.
If you feel comfortable with opening up your furnace, cleaning your flame sensor is something you can do yourself. Or, one of our heating service experts can do it for you.
If you want to clean the sensor yourself, you’ll need:
- A 1/4” hex screwdriver or wrench
- Piece of light grit sandpaper, steel wool or emery cloth
- A dry, clean paper towel
Next:
- Disable the furnace’s power by using its wall switch or breaker. If your gas valve is not electric, you will need to shut off the gas as well.
- Remove 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 rub the metal rod.
- Wipe off the rod with a paper towel.
- Remount the sensor.
- Replace the furnace doors.
- Turn the furnace’s power back on. It may proceed through a sequence of checks before resuming regular operation. If your furnace doesn’t ignite, the sensor may need to be replaced or something else might be wrong. If this happens, get in touch with us at 219-292-0956 for heating and cooling repair assistance.
7. Relight the Pilot Light
If you own an older furnace, the pilot light could be extinguished. To relight it, find the instructions on a label on your furnace, or follow these steps.
- Look for the switch on the bottom of your furnace labeled “pilot,” “on” and “off.”
- Turn the switch to the “off” position.
- Wait at least five minutes to avoid possibly starting a fire.
- Turn the knob to “pilot.”
- Push the “reset” button as you bring the flame of a long lighter to the pilot light opening.
- Release the “reset” button once the pilot light is lit.
If you have followed the instructions twice and the pilot light still won’t light or stay lit, contact us at 219-292-0956 for furnace service.
Check Your Fuel Source
Try switching on another gas appliance. If it doesn’t work, your natural gas service could be turned off, or you could be out of propane.
We Can Help with HVAC Repair
Followed our troubleshooting guide but your furnace still won’t work?
Call us today at 219-292-0956 or contact us online. We’ll come out and figure out the problem.