Is your heater not working right when the temperature drops? It happens more often than you think. Homeowners in Apopka, FL, often run into heating issues after long breaks between seasons. At A-1 Heat & Air, we know how frustrating it is when the heater fails at the worst time.

Before you call a technician, check these six common trouble spots. Sometimes the fix is simple. Keep reading to find out how you might get your heat working again without help.

1. Check the Thermostat Settings First

If your heater is not working in the house, your thermostat might be the reason. This is one of the easiest places to start. Many homeowners forget to switch it from “cool” to “heat.” That alone can keep your system from turning on.

Here’s what to look for:

• Make sure the thermostat is set to “heat”
• Raise the temperature at least 5 degrees above room temperature
• Replace the batteries if it uses them
• Make sure it’s not set to “fan only”

If the thermostat is not turning on the heater, it could be broken or wired incorrectly. Some models also fail after power outages or surges. Try resetting it. If it still doesn’t respond, it may need to be replaced.

2. Check the Circuit Breaker

If your heat furnace is not turning on, the issue could be with your electrical panel. A power surge or overload can trip the breaker. This shuts off power to the heater.

Follow these steps:

• Go to your breaker box
• Look for a breaker labeled “furnace” or “HVAC”
• If it’s in the middle position, flip it off, then on again

A tripped breaker might reset easily. But if it trips again right away, stop. This could mean a bigger electrical problem that needs a professional. Do not keep resetting it. That can cause more damage or a safety risk.

3. Replace or Clean the Air Filter

A dirty filter can block airflow. That means your heater may not be blowing hot air, or it may overheat and shut down. This is a common issue in homes that use forced-air systems.

Here’s how to check it:

• Turn off the system
• Remove the filter from the intake vent or furnace
• If it looks dusty, clogged, or gray, replace it
• If it’s washable, rinse it well and let it dry fully before reinstalling

Most filters should be changed every 1 to 3 months. If your system is running more than usual, like during a cold snap, replace it sooner.

4. Look at the Pilot Light or Ignition System

If you use gas heat, a blown-out pilot light could be why your heater is not working. Older units use a small flame to start heating. Newer models use electronic ignition.

To troubleshoot:

• Open the access panel on your furnace
• Look for a flame in the pilot assembly
• If it’s out, follow the label instructions to relight it
• If the light won’t stay lit, the thermocouple might be bad

If your model uses electronic ignition and still won’t start, the igniter might be dirty or cracked. Do not try to take it apart unless you know what you’re doing. Faulty ignition systems often need professional attention.

If you ever smell gas, leave the home right away and call your gas company. Do not light anything or turn on switches.

5. Inspect Vents and Ducts for Blockages

If your electric heater is blowing cold air, blocked or leaking ducts might be the cause. If hot air cannot move through your home, it may feel like the heater is not working even though it is running.

To check:

• Make sure all supply vents are open and clear of furniture
• Clean return vents with a vacuum brush
• Look in your attic or crawl space for disconnected ducts, if they are visible

Damaged or leaking ducts can cause heat loss. Warm air escapes before it reaches your rooms. This makes your heater work harder and your home stays cold. Sealing ducts is often not a do-it-yourself job and may need proper materials to avoid future leaks.

6. Listen for Furnace or Heat Pump Issues

If none of the above steps worked, there could be a deeper problem inside the system. This is more common in older units or those with no regular service. A failing motor, a dirty sensor, or a faulty blower can all cause a heater not working problem.

Watch for these signs:

• Loud noises like grinding or squealing
• The furnace shuts off quickly after starting
• A burning smell that does not go away
• The blower runs, but the air stays cold

These issues often mean wear and tear or a bad part inside the unit. If you try everything and the heat still won’t work, it’s time to call a trained technician for inspection.

Call A-1 Heat & Air for Fast Heating Repair Today

Still facing a heater not working problem? Don’t wait. Heating problems can get worse fast and often cost more to fix if ignored. If you’ve tried everything and nothing has worked, let A-1 Heat & Air take a look. We serve all of Apopka, FL, and we respond quickly to heating calls.

Call us now at (407) 290-9517. Our team will inspect your system, explain the issue clearly, and offer a repair plan that fits your home and budget. We’re known in the community for honest advice and reliable service. Your heat matters. Let’s fix it today.

Final Thoughts on What to Do When Your Heater Stops Working

To recap, if your heater is not working, don’t panic. Check these six areas first:

1. Thermostat settings
2. Circuit breaker
3. Air filter
4. Pilot light or ignition
5. Vents and ductwork
6. Inside the furnace or heat pump

A few of these are simple to fix on your own. Others may need help from someone who knows how to handle heating systems safely. If you’re in Apopka, FL, call A-1 Heat & Air at (407) 290-9517. We’ll help get your heat running again quickly and safely.