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If you’re experiencing problems with your furnace not turning on when the temperature drops, you’re not alone. This can be a frustrating and potentially dangerous situation, especially during the winter months. It’s important to understand the reasons why your furnace may not be kicking on when you need it to, and what you can do to resolve the issue.
It’s important to determine whether you have an oil furnace or an electric furnace. If you have an oil furnace, the problem could be related to a lack of fuel or a clogged fuel filter. In this case, you’ll need to contact a professional to inspect and service your furnace.
If you have an electric furnace, the problem could be related to a malfunctioning thermostat, a tripped circuit breaker, or a faulty heating element. You can try resetting the circuit breaker or replacing the thermostat, but if the problem persists, you should contact a professional to diagnose and repair the issue.
It’s also possible that your furnace is not kicking on because of a blocked air filter. This can cause the furnace to overheat and shut off as a safety measure. Checking and replacing your air filter regularly can help prevent this issue.
If your furnace stops working in the winter, it’s important to take action as soon as possible. This may include contacting a professional HVAC technician to diagnose and repair the issue. It’s also a good idea to have your furnace serviced regularly to prevent future problems and ensure that it’s operating efficiently.
The Furnace Not Kicking on When Temp Drops
Furnaces are an integral part of our homes, providing warmth and comfort during cold winter months. Unfortunately, when temperatures drop, furnaces may not always kick on when needed.
This can be due to a variety of issues, including faulty thermostats, blocked vents, or a malfunctioning blower motor. To diagnose the issue, homeowners should first check their thermostat to ensure it is set correctly and that the batteries are still functional.
If the thermostat is fine, then the next step is to check the vents for any blockages, such as lint or pet hair. If these are cleared away and the furnace still does not kick on, it could be a sign of a faulty blower motor. In some cases, the issue may be related to a faulty system switch or a broken electrical connection.
If this is the case, then it is best to contact a professional HVAC technician to handle the repair. They can safely diagnose and repair the issue, ensuring that your furnace is operational again. No matter the cause, when a furnace fails to kick on when temperatures drop, it is best to take action as soon as possible. This will ensure your family is not left in the cold and that your furnace is running efficiently and safely.
5 Common Reasons for a Furnace Not Kicking On When the Temperature Drops
1. Electrical Problems
One of the most common reasons for a furnace not kicking on when the temperature drops is an electrical issue. If your furnace is not receiving power or there is a problem with the electrical connection, it will not function properly.
This can be due to a tripped circuit breaker, a faulty thermostat, or a malfunctioning control board. It is recommended to call a professional HVAC technician to diagnose and repair electrical problems.
2. Fuel Issues
Another common reason for a furnace not turning on when the temperature drops is a lack of fuel. If your furnace is powered by oil or gas, it requires a steady supply of fuel to function. If the fuel tank is empty or the fuel line is clogged, the furnace will not kick on. It is important to have regular maintenance to ensure your fuel supply is adequate.
3. Dirty Air Filters
A dirty air filter can restrict airflow, causing the furnace to overheat and shut off as a safety measure. This can prevent your furnace from turning on when the temperature drops. It is important to check and replace your air filter regularly to prevent this issue from occurring.
4. Mechanical Malfunctions
Mechanical malfunctions can also cause a furnace to fail to kick on. Common issues include a faulty ignition system, a malfunctioning blower motor, or a broken belt. If you hear unusual noises coming from your furnace or notice that it is not functioning properly, it is important to contact an HVAC technician to diagnose and repair the issue.
5. Thermostat Problems
If your thermostat is not functioning properly, it can prevent your furnace from turning on when the temperature drops. This can be due to a faulty thermostat or an incorrect thermostat setting. It is recommended to have your thermostat inspected and serviced regularly to ensure it is functioning correctly.
Signs of a Furnace Not Kicking On When the Temperature Drops
When the temperature drops, a furnace should kick on to keep your home warm. If it’s not working correctly, you’ll notice some signs that something is wrong.
1. Check the Thermostat– The first step to finding out why your furnace isn’t kicking on is to check the thermostat. Make sure it is set to the correct temperature and that it is working properly. If the thermostat is not functioning, it won’t send a signal to the furnace to turn on.
2. Check the Power– If the thermostat is working properly, check to make sure the furnace is getting power. This means checking the circuit breaker and the switch near the furnace to make sure they are both on. If the furnace still isn’t working after checking the power, you may need to call an HVAC technician.
3. Inspect the Pilot Light– If the power is on and the thermostat is working, check the pilot light. It should be lit and burning blue. If it is not lit, you may need to relight it. If the pilot light continuously goes out, you may have a larger problem that needs to be addressed.
4. Check the Furnace Filter– A dirty air filter can be the cause of your furnace not coming on. The filter should be changed or cleaned every few months to keep it in good working order.
5. Listen for Noises– If the furnace is running, but not producing heat, listen for any strange noises coming from the unit. This could be a sign of a larger issue that needs to be addressed by a professional.
Read Also: Common Heatmor Outdoor Furnace Problems: Expert Solutions
Possible Solutions to a Furnace Not Kicking On When the Temperature Drops
Reset the Furnace Circuit Breaker: The first step is to reset the furnace’s circuit breaker. If the circuit breaker has tripped, it will not allow the furnace to turn on. Therefore, it is important to check the breaker and make sure it is in the “on” position.
Check the Thermostat: The next step is to check the thermostat. If the thermostat is not set correctly, this could be the cause of the problem. Make sure the thermostat is set to the correct temperature and that the fan is set to “auto”.
Inspect the Furnace Filter: Another possible issue is a clogged furnace filter. This can prevent the furnace from turning on. Therefore, it is important to check the filter and make sure it is clean and not clogged with debris.
Check the Flame Sensor: The flame sensor is a safety device that can prevent the furnace from turning on. If the flame sensor is dirty or damaged, it will not allow the furnace to turn on. Therefore, it is important to check the flame sensor and make sure it is in good condition.
Replace the Ignition Control Module: If all the other steps do not work, the final step is to replace the ignition control module. This is a part located inside the furnace that can become damaged or worn over time. Replacing the module can help to resolve the issue.
How to Prevent a Furnace Not Kicking On When the Temperature Drops
Check Power: The first thing to do is check that the furnace is receiving power. This can be done by checking the circuit breakers and ensuring they are in the “on” position. Also, check the furnace switch to make sure it is in the “on” position. If all looks good, then the next step should be to check for a pilot light.
Clean Air Filter: A clogged air filter can stop the furnace from kicking on. It is important to check the air filter regularly and replace it if needed. An air filter should be replaced every 90 days to ensure the best efficiency of the furnace.
Examine Thermostat: The thermostat should also be checked to make sure it is working properly. Make sure the thermostat is set to the desired temperature for the home, and that the batteries are fresh. If the thermostat is digital, it should be recalibrated every couple of months.
Inspect Furnace: If all else looks good, the furnace itself should be inspected. Check for debris and dust buildup, as this can cause the furnace to shut down. Also, check the wiring and ensure it is connected properly.
FAQs
Q1. Why is my furnace not kicking on?
There can be various reasons why your furnace is not kicking on, such as electrical problems, fuel issues, dirty air filters, mechanical malfunctions, or thermostat problems. It is recommended to call a professional HVAC technician to diagnose and repair the issue.
Q2. What should I do if my furnace stops working in winter?
If your furnace stops working in winter, the first thing you should do is check the thermostat settings, replace the air filter, and check the circuit breaker. If the issue persists, call a professional HVAC technician to diagnose and repair the issue.
Q3. Why is my oil furnace not kicking on?
A lack of fuel or a clogged fuel line can prevent an oil furnace from kicking on. It is important to have regular maintenance to ensure your fuel supply is adequate and your fuel line is not clogged.
Q4. Why is my electric furnace not kicking on?
An electric furnace may not kick on due to electrical problems, such as a tripped circuit breaker or a malfunctioning control board. It is recommended to call a professional HVAC technician to diagnose and repair electrical problems.
Q5. What can I do if my furnace is not kicking on despite having an adequate fuel supply?
If your furnace is not kicking on despite having an adequate fuel supply, it may be due to mechanical malfunctions, such as a faulty ignition system, a malfunctioning blower motor, or a broken belt. Call a professional HVAC technician to diagnose and repair the issue.
Q6. Can a dirty air filter prevent my furnace from kicking on?
Yes, a dirty air filter can restrict airflow, causing the furnace to overheat and shut off as a safety measure. It is important to check and replace your air filter regularly to prevent this issue from occurring.
Q7. Why is my thermostat not turning on my furnace?
A faulty thermostat or an incorrect thermostat setting can prevent your furnace from turning on. Have your thermostat inspected and serviced regularly to ensure it is functioning correctly.
Conclusion
It’s clear that a furnace not kicking on when the temperature drops is a major issue that needs to be addressed as soon as possible. While there could be several different causes for this issue, it’s important to have a professional diagnose the problem and advise on the best course of action. Taking the time to properly diagnose and repair the furnace will help ensure that it’s functioning properly and that you and your family are safe and comfortable.
