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DIY Furnace Repair Troubleshooting Guide

DIY Furnace Repair Troubleshooting Guide

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DIY Furnace Repair Troubleshooting Guide

We all know that furnace repair can be a hassle, whether it be for maintenance, warranty repairs, or emergency repairs. While there are times when an experienced and licensed professional should be consulted to help fix any issues, many times a simple DIY troubleshooting guide can get you on the right track towards solving a furnace issue.

This guide is designed to provide a comprehensive understanding of common issues that you might experience with your furnace and what steps can be taken to solve them.

Checking the Power

The first step to taking on your furnace repair troubleshooting is to check whether the power supply is suffering from an interruption. Sometimes the breaker might have tripped, or maybe the power switch was disabled accidentally.

To ensure that all power connections are functioning correctly, use a reliable spilt-pin voltage tester on the outlet and make sure the power is working and responsive when switched off and on.

Change the Filter

Another simple, yet often overlooked furnace repair troubleshooting option is to check the filter. After prolonged periods of operating your heater, the filter can become clogged with dirt, toys, pet hair or dust, making it difficult for air to flow freely into the furnace.

Fortunately, this is an easy fix. Simply remove the filter, dispose of it responsibly, and replace it with a new one. If the filter is too expensive or not available, you can use a vacuum cleaner hose with a mesh filter to clear the dust to improve airflow while you are waiting to get another filter.

Temperature Adjustments

If you are having an issue in regards to the temperature of the air coming out of your vents, you may want to double check the thermostat settings.

Make sure that the temperature that you have your thermostat set to is at least a few degrees higher than what the actual temperature in your home is. If the two numbers are very close, then the heater may not turn on because the thermostat senses no discrepancy in temperature.

Check the Pilot Light

For those who own a furnace with a pilot light, it is possible that the pilot light has gone out. If you cannot see a flame when you peek into the furnace, or you hear a clicking sound coming from the furnace, then the pilot light could be the cause of the issue.

Fortunately, relighting the pilot light is easy. Simply ensure that the power to the furnace is off and then use a long lighter to ignite the pilot light. Wait for the flame to become steady and then set the power switch back on. This should resolve any pilot light issues.

Faulty Parts

While a majority of heating issues can be solved with a simple DIY furnace repair troubleshooting guide, there are times when you may need to replace parts. Read the manual for your furnace to see which parts may have malfunctioned, such as the blower motor, burners, or other components.

It is recommended to hire a licensed professional for any major repairs on your furnace. A qualified and trusted technician should be able to diagnose the problem, log the fault code, and provide accurate repair or replacement solutions for your piece of mind.


Furnace repair troubleshooting doesn’t have to be a daunting prospect. In many cases, the issue can be solved with a few simple DIY steps. But if the issue turns out to be more complicated than you anticipated, it is always advisable to call on a licensed and experienced technician. If you wish to read more information about Furnace repair troubleshooting, click here. For local reliable repair, please click here or call Local Reliable Appliance Repair at (866) 516-1222.

DIY Furnace Repair Troubleshooting Guide
DIY Furnace Repair Troubleshooting Guide
DIY Furnace Repair Troubleshooting Guide

Furnace Repair Troubleshooting

Preventive Action to Avoid Issues

PLEASE consider the following preventive action to avoid Furnace repair troubleshooting issues:
1. Have a professional HVAC technician inspect and tune up the furnace annually to ensure optimal performance.
2. Clean filter regularly. Check filter monthly and replace it with a new filter every 90 days.
3. Verify that the thermostat settings are correct.
4. Check that there is sufficient air flow around the furnace.
5. Check that the exhaust is not blocked.
6. Make sure the condensate drain is properly functioning.
7. Make sure the gas pipes are properly sized and not leaking.
8. Ensure the pressure switch is functioning correctly.
9. Test the safety switch and flame sensor.
10. Make sure the electrical connections are tight and secure.
11. Ensure that all blower motor and flame settings are calibrated correctly.
12. Verify that the heat exchanger is not blocked and is not leaking.
By following these steps and keeping up with regular maintenance, homeowners can prevent any Furnace repair troubleshooting issues from occurring in the future.

Repairing a Furnace in San Diego

For furnace repair in San Diego, calling Local Reliable Appliance Repair at (866) 516-1222 is the best professional advice.

The average cost of furnace repair varies greatly depending on both, the complexity of the repair and the cost of materials, including the parts necessary. The minimum repair or installation cost and the more complex repair or installation price in San Diego are usually estimated after diagnosis.

To best identify which parts of the furnace are necessary for repair or replacement, here is an itemized list of components which are commonly replaced:

  • Blower Motors
  • Blower Wheel
  • Blower Motor Relay
  • Thermistors
  • Ignitors
  • Flame Sensors
  • Gas Valves
  • Ignition Control Boards
  • Limit Switches
  • High Limit Switches

The cost of parts, such as those listed above, vary depending on their complexity. Additionally, the labor cost for the repair may incur additional fees, depending on the severity of the malfunction. Repairing or replacing furnaces can be a difficult and expensive task, so be sure to contact Local Reliable Appliance Repair for help with furnace repair in San Diego.

Troubleshooting Furnace Issues With Reliable Appliance Repair

When you find yourself facing furnace repair troubleshooting issues, the team at Reliable Appliance Repair has the perfect solution for you! Professional, local appliance repair and HVAC service for for customers in San Diego and the surrounding areas.

Reliable Appliance Repair is a family-owned, local company offering same-day service for appliance and HVAC repair and installation. As a first-time customer, you can take an additional $25 off labor.

Our technicians are highly trained and have a minimum of five years of experience in the field. A team you can trust to get the job done right, the first time round.

If you're worried about unexpected bills, then you needn't. All the prices are fair and affordable. Furthermore, the company is highly trusted by many – they're licensed and insured.

To get started, don't hesitate to make an appointment with Reliable Appliance Repair by calling (866) 516-1222 ([tel: (866) 516-1222}).

For your furnace repair troubleshooting needs, don't look any further than Reliable Appliance Repair. Customer satisfaction and trust are their top priorities. Get the job done by technicians who really care about the service that they offer you.

FAQ – DIY Furnace Repair Troubleshooting Guide and Furnace Repair Troubleshooting

  • What is a Furnace Repair Troubleshooting Guide?
    A Furnace Repair Troubleshooting Guide is a step-by-step approach to refining the diagnosis and repair of furnace problems. Through a simple and organized flow of information, users can quickly identify the issue with their furnace and remedy the situation.

  • What types of problems can be solved using a Furnace Repair Troubleshooting Guide?
    A Furnace Repair Troubleshooting Guide is typically used to troubleshoot and outline potential solutions for most furnace problems, such as a blocked airflow, dirty air filter, electrical issues, or a failing gas valve.

  • How can a user determine if a problem requires professional assistance?
    If a user is unable to identify the source of the furnace problem using a Furnace Repair Troubleshooting Guide, it is advised to seek the help of a qualified professional. It is also highly recommended to consult with a qualified professional if the attributes of the particular furnace issue entail a hazardous electrical issue or a potentially unsafe situation with the existing gas lines and systems.

  • Where can one find a qualified professional to address furnace repair problems?
    If seeking the help of a qualified professional for furnace repair problems, Local Reliable Appliance Repair at (866) 516-1222 is an excellent resource for fast, intuitive, and reliable service.