If you're a homeowner, then you already know that the major appliances can make all types of noises. Some noises are normal sounds, while others may mean that it's in need of repairs. If you are a new homeowner, or even if you've been a homeowner for awhile, you may not know if your appliances are in need of repairs, especially your furnace. If you aren't sure if your furnace needs a repair, read on.

1. Odd Sounds

Again, some of your appliances (including your furnace) can make odd sounds. If your furnace is clunking when it starts, rattling, banging, or even making a popping sound when it's running, it may need a repair. Some sounds could simply be an issue with your ductwork or something in your vents, but some noises could be an issue with the motor or even the belt inside the furnace. If you hear odd noises and aren't sure what the problem is, hire a professional heating repair service to help you diagnose the noise and make the repair.

2. Old System

If your system is old, it may start breaking down more often. An older system can be costly to repair, and it may begin to snowball with needed repairs. The cost of these repairs will also begin to go up, as older parts are going to be harder to find. If this is the case, you may want to upgrade your system to a newer furnace.

3. Increase In Dust

If you have an increase in the dust around your home, it could be due to your furnace filter needing to be changed. You can change your filter yourself by simply pulling out the old one and replacing it with a new one that is the same size and type. If this doesn't fix your dust problem, it could be something else. Call a professional to have your furnace inspected and repaired.

4. Natural Gas Odors

If you have an odd smell in your home or your carbon monoxide sensor is going off, your heating system needs professional attention right away. Call your local gas company to have your gas turned off, then call a professional heating repair company to have your furnace inspected. A gas leak can be deadly if not repaired, so have this repaired right away.

5. Yellow Flame

If the pilot light on your furnace is yellow, it may mean that you have a cracked heat exchanger. This could also be a deadly problem. If your flame is yellow, call a professional to have this repaired right away. The flame on your furnace should be blue, not yellow.

If you have spotted any of these in your furnace, it's time to have your furnace repaired. Call a professional HVAC (heating, ventilation, and air conditioning) technician for help making repairs to your furnace.