At Rich’s Heating and Cooling LLC, we know how frustrating it can be when your heating system suddenly stops working—especially during a cold New Jersey winter. Before you panic or call for emergency repairs, try these troubleshooting steps. Sometimes, a simple fix can save you time and money!
If you need professional help, give us a call at (732) 433-0068. We’re here to keep your home warm and comfortable!
1. Check Your Thermostat Settings
One of the most common (and easiest) issues is a thermostat that isn’t set correctly.
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Ensure it’s set to “HEAT” mode.
Increase the temperature by 5-10 degrees to see if the system kicks on.
If your thermostat runs on batteries, replace them.
For smart thermostats, check the Wi-Fi connection and reset if necessary.
2. Inspect the Furnace Power & Breakers
- Check the power switch near the furnace (it should be set to “ON”).
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Locate your home’s electrical panel and look for a tripped breaker labeled “Furnace” or “HVAC.”
- If tripped, reset it by switching it off and then back on.
- If your furnace has a safety switch near the blower panel, ensure it's properly closed.
3. Check the Furnace Filter
A clogged air filter can cause your furnace to overheat and shut down.- Locate your air filter (usually near the return air duct or blower compartment).
- If it looks dirty or clogged, replace it with a new filter (typically $10–$30).
- For best performance, change filters every 1-3 months.
4. Make Sure the Gas Supply is On
For gas furnaces, a disrupted gas supply will prevent the system from working.- Locate the gas valve near your furnace and ensure it’s in the ON position (parallel to the pipe).
- If you suspect a gas leak, leave your home immediately and call your gas company!
5. Look for a Pilot Light or Ignition Issues
If you have an older furnace with a pilot light, check to see if it’s out.- Follow manufacturer instructions to relight the pilot safely.
- If the pilot won’t stay lit, the thermocouple might be faulty.
- If there’s no clicking or flame, the ignitor may need replacement (typically $150-$300).
6. Check for Blocked Vents & Ducts
Blocked or closed vents can cause uneven heating or prevent warm air from circulating.- Walk through your home and ensure all supply vents are open.
- Check for furniture or rugs blocking vents.
- If certain rooms are still cold, your ducts may need cleaning or repair ($300-$700).
7. Inspect the Furnace Blower Motor
If your furnace is running but no air is coming out, the blower motor might be the issue.- Listen for a humming noise—this may indicate a bad capacitor (replacement costs $100-$250).
- Check if the blower compartment is dirty or blocked.
- If the motor isn’t spinning, it may need professional repair ($400-$1,200).
8. Check for Error Codes on Your Furnace
Many modern furnaces have an LED diagnostic light that flashes error codes.- Locate the error code chart on the inside of your furnace panel.
- Count the number of flashes and refer to the chart for troubleshooting.
- Common issues include pressure switch failures, ignition problems, or sensor faults.
9. Reset the Furnace
If all else fails, a simple reset may get your system running again.- Turn off the furnace using the power switch.
- Wait 5-10 minutes.
- Turn it back on and check if it starts working.
When to Call a Professional
If you’ve tried these steps and your furnace still isn’t working, don’t wait—cold temperatures can cause frozen pipes and other costly damage.Call Rich’s Heating and Cooling LLC if:
- You smell gas or suspect a leak.
- Your furnace keeps shutting off unexpectedly.
- There’s a burning smell or strange noises (banging, screeching, etc.).
- Your system is blowing cold air instead of heat.
- Your energy bills have spiked suddenly.
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