Key Ways to Tell If You Need to Replace Your Furnace – Part Two

Welcome back to the second part of our guide on how to tell if you need to replace your furnace. As we discussed in the first part, your furnace plays a crucial role in keeping your home warm and comfortable during the cold winter months. However, just like any other appliance, your furnace can wear out and eventually stop functioning efficiently. In this part, we will dive deeper into the signs that indicate it’s time to replace your furnace. By paying attention to these warning signs, you can avoid unexpected breakdowns and keep your family warm and safe. So, let’s get started!

5 – Your Home Has Inconsistent Heating

If you notice that some rooms in your home are warmer than others, it could be a sign that your furnace is struggling to distribute heat evenly. Uneven heating could indicate issues with the furnace’s blower or ductwork, which may require repairs or replacement.

Uneven heating can be frustrating, especially if you’re constantly adjusting your thermostat to try and get your home to a comfortable temperature. However, it’s important to address the issue sooner rather than later, as it could indicate issues with your furnace that may require repairs or replacement.

6. Blocked Vents or Registers

If you have furniture or other objects blocking your vents or registers, this can prevent warm air from circulating properly throughout your home. Check to make sure that all of your vents and registers are clear and unobstructed.

7. Dirty Air Filters

Dirty air filters can also impede the flow of warm air through your furnace and ductwork. Make sure to replace your air filters regularly to keep your furnace running smoothly.

8. Ductwork Issues

If your ductwork is damaged, clogged, or poorly designed, it can cause uneven heating in your home. A professional HVAC technician can inspect your ductwork to determine if repairs or replacements are necessary.

9. Furnace Blower Issues

Your furnace’s blower is responsible for pushing warm air through your ductwork and into your home. If the blower is not functioning properly, it can cause uneven heating. A technician can inspect your blower motor, belt, and other components to determine if repairs or a replacement is needed.

10. Incorrect Furnace Size

If your furnace is too small for your home, it may struggle to heat your entire space evenly. On the other hand, if your furnace is too large, it may cycle on and off frequently, leading to uneven heating. A professional HVAC technician can assess the size of your furnace and recommend the right size for your home.

If you’re experiencing uneven heating in your home, it’s important to address the issue sooner rather than later. By identifying the root cause of the problem and taking corrective action, you can ensure that your home is comfortable and warm all winter long. Contact a professional HVAC technician to schedule an inspection and keep your furnace running smoothly.

11 – Strange Odors

If your furnace is making unusual noises or emitting strange odours, it may be time to replace it. These can be signs of a serious problem with your furnace, and continuing to use it could be dangerous. If you’ve noticed any unusual noises or odours coming from your furnace, it’s important to have it inspected by a professional as soon as possible.


In conclusion, keeping your furnace in good working condition is essential for your comfort and safety during the winter season. By paying attention to these signs, you can identify when it’s time to replace your furnace and avoid unexpected breakdowns. If you are experiencing any of these issues, it’s essential to contact a qualified HVAC technician to assess your furnace’s condition and recommend the best course of action.

If you need furnace replacement, contact Legacy Heating. We have extensive expertise with HVAC systems for residential new home construction (RNC) and installation and replacement of furnaces. Contact us and let us know how we can help!

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