If you have a functional furnace in your house, it may need repair from time to time. As a matter of fact, furnaces can stop working any time. However, when they do, you don’t have to panic as you can do the basic repair on your own in most cases. Given below are some DIY repair tips that may help you get your thing back on the track once again. And you won’t need to call a professional. Read on.1. Change the filterThe filter plays a big role in any furnace, especially during winter when it is under heavy load all the time. When the filter gets clogged, the airflow becomes poor. So, we suggest that you change the air filter at least once every 4 months. However, you may also want to consider the manufacturer’s recommendations.2. Check burner flamesMake sure the flame is blue and burns evenly. A yellow flame means that the burners are dirty; however, it may also mean that there is carbon monoxide. If the later is the case, you should get in touch with a professional.3. Vacuum the burnersFirst, you should switch off the system and the gas supply. Next, you should vacuum the dirt or dust close to the burners and blower compartment.4. Clean the blower and flame sensor Make sure you also clean the blades of the blower using a good vacuum cleaner and a brush. You should be careful not to damage the wiring or counterweights. For the flame sensor, you may want to try an emery cloth. It is designed for cleaning metal surfaces.5. Dust surface igniterYou can use a drinking straw for removing dust from the surface igniter or the pilot. Just don’t touch that hot thing.6. Look at the drive beltActually, you should check it on a regular basis. It is not costly to replace, though. A new belt won’t cost you more than $5, give or take.7. Lubricate bearingsYou should check the blower shaft bearings and the motor bearings for lubrication. Ideally, it’s a good idea to lubricate them on an annual basis. You can use lightweight motor oil.8. Deal with the corrosionIf you can see a powdery substance on the vents of the exhaust, know that it can be corrosion. You can’t do anything about. So, calling a professional is a good idea.9. Leaky vents During your inspection, if you notice a leak, you can use seal them up with heat resistant silicone or metal tape.10. Check exhaust pipes for air intake You should check the exhaust pipes for air intake. If there is debris, leaves or ice, you should remove it from the exterior of the exhaust.Long story short, if your furnace is not working properly, you can check it thoroughly with the help of the tips given in this article. After you have checked the furnace and have followed the given tips, your furnace should work properly. If it doesn’t, you should call a professional.