Furnace Repair San Mateo

Frequently Asked Questions about Furnace Repair

What causes a furnace to stop working?

There are many potential causes of furnace failure, from minor issues to major breakdowns. Here are some possible culprits:

• Lack of power: Check the circuit breaker to ensure the furnace is receiving power. A tripped breaker is a common and easily resolved problem.
• Thermostat problems: Check that the thermostat is set correctly to 'heat' and at a temperature higher than the current room temperature. Replace batteries if the display is blank or not working. Try resetting the thermostat or replacing the batteries. If that doesn't solve the problem, the thermostat may need to be replaced.
• Clogged air filter: A dirty air filter can restrict airflow and prevent the furnace from working efficiently.. Try replacing the filter.
• Ignition problems: The igniter or pilot light (in older furnaces) is responsible for lighting the burners. A faulty igniter or pilot light may need to be cleaned or replaced..
• Blower motor issues: The blower motor circulates air through the furnace and ductwork. A faulty motor can prevent air from circulating properly..
• Gas supply problems (for gas furnaces): Gas furnaces require both gas and electricity to function properly. Check that there are no gas leaks.
• Other component failures: Other components, such as the heat exchanger, flame sensor, control board, or limit switch, can also cause furnace malfunctions..

It is typically best to avoid trying to fix the furnace on your own unless you're a qualified HVAC professional.

What is the average lifespan of a furnace?

The average lifespan of a furnace is typically 15 to 20 years. How long your particular furnace will last is influenced by:

• Maintenance: Preventative maintenance significantly impacts the life of your furnace. A preventative maintenance plan can make your furnace more reliable.
• Usage: The more frequently you use your furnace, the shorter its lifespan will be.
• Quality: Well-built models are typically more durable.
• Proper Installation: Correct installation is crucial for optimal performance and longevity..

If your furnace is over 15 years old and starting to experience frequent problems, it may be time to consider replacing it.

What are the signs that my furnace needs to be replaced?

If your furnace is exhibiting any of the following signs, it may be time for a replacement:

• Age: If your furnace is 15-20 years or older, it is likely less efficient and more prone to breakdowns.
• Frequent Repairs: If your furnace requires frequent and costly repairs, it may be a better financial decision to replace it than to keep repairing it.
• Increasing Energy Bills: A significant increase in your heating bills could indicate that your furnace is losing efficiency.
• Inconsistent Heating: Uneven temperatures throughout your house could mean your furnace isn't functioning as it should.
• Strange Noises: Listen for odd noises coming from the unit.
• Yellow Flame: A healthy furnace flame should be blue. A yellow flame suggests a problem with the burners or venting. A yellow flame requires immediate attention.
• Dry Air: If you notice excessive dryness, a new furnace could provide increased comfort.

It's important to address issues as soon as possible.

How do I reset my furnace?

If your furnace isn't working correctly, a simple reset can sometimes resolve the issue. Here's how to reset most furnaces:

1. Turn off the furnace: Set the thermostat to the 'off' position.
2. Turn off the power: Locate the circuit breaker for your furnace and switch it off.
3. Wait: Wait at least 30 seconds, though longer is sometimes recommended for the system to fully power down.
4. Turn the power back on: Flip the circuit breaker back to the 'on' position.
5. Turn on the furnace: Turn the thermostat back on and set it to your desired temperature.

If the problem continues or if you encounter error codes, don't attempt to diagnose or repair the issue yourself.