Rheem Gas Furnace Troubleshoot

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Hello MonsterWoodshop readers, are you having trouble with your Rheem gas furnace? When the furnace stops working, it can be frustrating and uncomfortable, especially during colder months. Fortunately, there are many simple solutions you can try before calling a professional to save money and ensure your home stays warm. In this guide, we will give you troubleshooting tips to fix your Rheem gas furnace and avoid heating failures.

How Does a Rheem Gas Furnace Work?

Rheem gas furnaces work like any other gas furnace: They operate using natural gas to create heat which is then circulated throughout the house. The furnace has a burner unit that ignites the gas and heats the air. Once heated, the air is then pumped through the ductwork to the rooms in your home.

Common Rheem Gas Furnace Problems

Gas furnaces work great most of the time, but occasionally, they may experience minor issues. Here are some common Rheem furnace problems:

No Heat/Low Heat Dirty air filter, closed/blocked air vents or furnace not properly sized for the home. Clean or replace the filter, open air vents and contact a professional to check furnace size.
Furnace Blower Doesn’t Turn On Motor, thermostat, or fan belt problem. Check to see if it is plugged in and power is being supplied.
Furnace Pilot Light Won’t Stay Lit Thermocouple failure, draft, or gas supply issues. Adjust or replace the thermocouple, check for proper draft and gas supply.
Furnace Makes Strange Noises Blower belt or motor bearings need lubrication or replacement. Oil the belt and motor with the proper lubricant; contact a professional if noise persists.

Strengths and Weaknesses of Rheem Gas Furnace Troubleshoot


Rheem gas furnace troubleshoot is an affordable and effective way to resolve heating issues. By following these simple tips, homeowners can avoid costly service calls and quickly get back to a warm and comfortable home. Additionally, the brand’s durability and energy efficiency help save money in utility bills over time.


While its tips and tricks are handy and efficient, the Rheem gas furnace troubleshoot guide may not be enough to fix all issues concerning your furnace. More complex problems may require the services of a professional to diagnose and fix problems. Though this can increase the cost, it ensures that the problem is resolved properly and without any further complications.

Frequently Asked Questions (FAQs)

1. Can I replace the Rheem furnace hot surface ignitor myself?

Yes, you can. Hot surface ignitors are simple to replace with a few basic tools. However, you should follow the manufacturer’s instructions and safety guidelines.

2. How can I locate the air filter in my Rheem gas furnace?

Most Rheem furnaces have the air filter in the blower cabinet. However, you can also check the installation manual that came with your furnace or contact the manufacturer for assistance.

3. Can I burn off a dirty Rheem furnace filter?

No, never attempt to burn off a dirty Rheem furnace filter. Burning the filter can cause a fire and damage the furnace, making it unsafe to operate.

4. Why does my Rheem furnace keep short-cycling?

Short-cycling, where the furnace turns on and off frequently, can result from several causes, including a clogged air filter or a malfunctioning thermostat. A trained technician can help identify and rectify the problem.

5. Why is my Rheem furnace fan running continuously?

If the fan continues to run when the furnace is off or on cooling mode, there may be a wiring or control issue. A professional should be called to diagnose and fix the problem.

6. How often should I replace my Rheem furnace air filter?

It is best to replace or clean the air filter at least once every three months, depending on the usage and indoor air quality.

7. Why is my Rheem furnace not producing any heat?

Several things can cause a Rheem furnace to stop producing heat, including clogged ducts, low gas pressure, or a broken ignitor. To diagnose and fix the problem, call a professional to ensure your safety and proper operation of the furnace.

8. What temperature should I set my Rheem furnace to?

The ideal temperature for most homes is between 68 and 72 degrees Fahrenheit. However, this may vary according to personal preference and the size of your home.

9. Why is my Rheem furnace blowing only cold air?

The problem could be a faulty thermostat, a dirty air filter, or a broken blower motor. Call a professional to assess and repair the problem.

10. How do I reset my Rheem furnace?

Before resetting your Rheem furnace, ensure it is safe to do so. Locate the reset button on the furnace’s control board and press it. If the furnace still doesn’t start, call a professional for repair.

11. What if my Rheem furnace is emitting a strange smell?

If your Rheem furnace is producing a strange odor, turn off the unit immediately and call a professional to assess and repair the problem. The unit may be producing unsafe gases or chemicals.

12. Why is my Rheem furnace making a loud boom sound?

A loud boom sound can indicate a delayed gas ignition or a dirty burner. Call a professional to diagnose and fix the problem as it can be dangerous.

13. How do I clean my Rheem furnace ducts?

The easiest way to clean Rheem furnace ducts is to have a professional perform a duct cleaning service. It’s a comprehensive approach and can help identify and rectify other issues.

Conclusion: Keep Your Rheem Gas Furnace Running with Troubleshooting Tips

We hope that this guide has helped you troubleshoot your Rheem gas furnace and resolve the problem. Remember, in most cases, simple fixes can make all the difference. However, if you are uncomfortable or feel unsafe attempting any of these fixes, contact a professional technician to diagnose and fix your furnace. Always remember to put your safety first and avoid any further complications.

Don’t let heating failures catch you off guard. Stay informed, follow these tips, and keep your Rheem gas furnace running smoothly. Stay warm, MonsterWoodshop readers!

Closing Words: Disclaimer About Rheem Gas Furnace Troubleshoot

Rheem gas furnace troubleshoot tips should never replace the advice and services of a professional technician. Always follow the manufacturer’s instructions and safety guidelines before troubleshooting any furnace issues. Attempts to fix furnace issues should only be undertaken if you are comfortable and feel confident that you can do so safely.

We have used our best efforts in creating the content of this guide. However, we make no representation or warranty with respect to the accuracy, applicability, or completeness of the information found here.

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