Furnace Not Kicking On When Temperature Drops? Here’s What to Do
As the weather in Western Washington gets colder, it’s the season when your furnace becomes essential for keeping your home comfortable. However, what happens when the temperature drops, but your furnace won’t kick on? This can be a frustrating and chilly problem. Below are some common reasons why your furnace might not start and tips to troubleshoot the issue.
8 Things To Check: Common Causes of Furnace Malfunction
1. Power Issues
Your furnace needs power to operate, so if it’s not turning on, it could be a power issue. Check your circuit breaker to see if the furnace’s breaker has tripped. If it has, try resetting it. Additionally, look for a power switch near the furnace unit itself, as some units have their own switch that might have been accidentally turned off.
2. Your Thermostat
Sometimes, the issue isn’t with the furnace but with the thermostat. Make sure your thermostat is set to “heat” and that the temperature is set higher than the current room temperature. If your thermostat runs on batteries, ensure they are fresh. You might also want to check if the thermostat display is functioning properly.
3. Gas Supply Issues
If your furnace uses natural gas or propane, check the gas valve to ensure it’s turned on. A disruption in the gas supply could prevent the furnace from igniting. If you suspect a gas leak or any other serious gas-related issue, evacuate your home and call a professional immediately.
4. Inspect the Furnace Filter
A dirty or clogged air filter can restrict airflow, causing your furnace to shut down or fail to start. If the filter is dirty, replace it with a clean one. We recommend checking your furnace filter regularly, especially during the heating season, to keep your system running efficiently.
5. Pilot Light or Ignition Issues
If you have an older furnace, it might have a pilot light. If this light has gone out, you’ll need to relight it according to the manufacturer’s instructions. Newer furnaces use electronic ignition systems, which can sometimes malfunction. In such cases, it’s best to consult a professional to inspect the ignition system and ensure it’s working properly.
6. Malfunctioning Limit Switch
A limit switch monitors the temperature inside your furnace and prevents it from overheating. If the limit switch is faulty, it could shut down your furnace prematurely or prevent it from turning on. A professional HVAC technician can diagnose and replace a faulty limit switch.
7. Faulty Blower Motor
The blower motor is responsible for circulating warm air throughout your home. If the motor is malfunctioning or the fan is not turning on, your furnace may not distribute heat. In this case, you’ll need a technician to inspect and repair the motor.
8. Aging Furnace
If your furnace is more than 15-20 years old, it might simply be nearing the end of its lifespan. As furnaces age, they become less reliable and prone to frequent issues. If you’re facing repeated problems, it might be time to consider upgrading to a newer, more energy-efficient model.
Call Green City Heating and Air for Expert Help
When your furnace won’t kick on, it’s crucial to address the issue quickly to restore warmth and comfort in your home. While some problems can be fixed with basic troubleshooting, others require the expertise of a professional HVAC technician. At Green City Heating and Air, we specialize in diagnosing and repairing furnace issues to ensure your home stays warm throughout the winter. Contact us today for a thorough inspection and prompt service!
By addressing these common furnace issues, you can avoid the frustration of a cold home when the temperatures drop. Regular maintenance and prompt repairs will keep your heating system running smoothly and efficiently.
