Rooms In Your Home Have Different Temperatures
Older units have trouble distributing heat evenly throughout your house. Some rooms will be cooler and some rooms warmer. This is a definite sign it’s time to make an HVAC change soon.
You See Soot Around The Register
The ventilation duct cover that opens and closes is your furnace register. If you find soot, rust or dust in different areas of your home, this means your furnace has too much CO2. Health issues can occur such as sore throat, dry eyes and upper respiratory infections as well.
Your Furnace Is Making A Lot of Noise
Your furnace should never make sounds like rattling, popping, humming or screeching. If you are hearing these sounds, it is generally a clear sign that you need a new HVAC system.