The average lifespan of a furnace is between 15 and 20 years. If your furnace is more than 10 years old, it is more likely to need furnace repair. If you aren’t sure how old your furnace is, it is a good idea to find out. You can do this by calling the manufacturer and giving them the serial number. You may also find the manual for your furnace somewhere if you purchased the house from someone else with a furnace already installed. Watching for signs that you need furnace repair can save you money and extend the life of your furnace. Don’t wait if you hear or see any of the following signs:
- An unusual increase in illness or asthma and allergy symptoms in yourself or your family members
- Signs of rust, corrosion or cracks on or around your furnace
- Your furnace is turning on and off more often
- A sudden rise in your electric bill that can’t be explained by a cold spell
- New, loud, or unusual noises. The most common ones are banging, whining and creaking
- You turn up your thermostat several degrees, but your house doesn’t seem to get any warmer
- Your pilot light is any color other than blue
- You frequently have condensation forming inside your home’s windows.
Furnace repair can save money and make your furnace last longer, but at some point, every furnace will need to be replaced. If your furnace is 15-20 years old and needs repair, you may consider replacement. Also, if you have needed furnace repair multiple times in the last couple of years, you may want to think about replacement.