A furnace is designed to work great for only so long, even if you put a lot of effort into maintaining it. Here are some situations that would definitely make furnace replacement a good investment to carry out for your property.
There are some furnaces more vulnerable to corrosion than others. They may not have been built with the best weatherproof materials and when the humidity gets to a certain point, materials can start corroding and breaking down.
If you have a furnace currently dealing with severe corrosion, then you'll be better off just having the system replaced. Repairs will not be able to help if the corrosion has impacted deep within your furnace's materials. If a repair was attempted, sections could start falling apart entirely.
When you go to replace this system, make sure you get a better one in the corrosion-resistant department so that you're not put in this position for a very long time.
No Heating Consistency
Your furnace may still work and provide heat, but it may not provide heating consistency throughout your entire home. It may provide warm air to one area better than it does another, and that's not a good situation to be in if you have a lot of areas that need warm air.
Instead of just putting up with this inconsistent heating, you might want to find a replacement furnace that is able to give every area in your home the same amount of heat. Then wherever you go, you'll be able to stay warm.
Contaminants Affecting Air Quality
One of the more dangerous things that can happen with a furnace is for it to put out contaminants into the air. It could be soot, dirt, and even rust particles. If you were to breathe in these things regularly, then health complications could surface.
If you have a furnace in this state and despite your best efforts, contaminants are continuing to be put out into the air, then go ahead and replace the furnace. You'll feel much better about how your furnace runs as your health won't be at risk.
When your furnace starts causing a bunch of problems and there doesn't seem to be a repair to change this fact, then furnace replacement should be discussed carefully. You'll find a lot of great systems that can be set up quickly by professionals. You will just need to act before you're left suffering.
To learn more about furnace replacement, contact a local HVAC technician.