How to Tell if Your “Dinosaur” Furnace is Going Extinct Soon

Updated: February 19, 2026

The average furnace in homes today has a lifespan of 16 to 20 years. You get the occasional system that may last as long as 25 or so, but these are the exceptions. A good way to tell if your furnace is on the older end of the spectrum is to check and see if it still has a pilot light. If it does, you definitely have a dinosaur!

Old furnaces can be hardy systems and yours may still be functioning great, but just realize that this may be the time to save your pennies and shop around for new heating units. That way you’ll have an idea what you will get when your precious dinosaur bites the dust.

Here are a few signs to look for that your furnace may be getting very old and may need to be replaced soon:

• An extremely dusty and dry house – Have you noticed an excess of dust and dry air in your home? Is anyone experiencing more serious allergy problems? These could be signs that your old furnace is not able to moisturize the air and keep your home comfortable anymore.
• Rising gas or electric bills – Many times your bill may rise and you may think that cost of gas or electricity is going up. However, in actuality it may be because the furnace is having to run more often to keep you warm. The older it is, the more effort it can take for the heater to warm your bones!
• Multiple repairs – Does it seem like you’ve had so many repairs on your furnace over the past few years? At some point you should stop spending money to keep the dinosaur working and instead save for a new one.
• Are you comfortable? – This is what a furnace is about right? If you can’t be comfortable in your own home, then that’s a problem.
• Making noises? – Is your furnace making strange noises on a regular basis these days? Maybe some unusual growls and grumbles you’ve never heard before? If that’s the case, it may definitely be showing its age.

Perhaps your furnace is not old, but just having problems. Find out what your furnace may be trying to tell you.

If you are realizing now that your furnace is older than you thought, and are in serious need of a new one, please contact us at Richmond’s Air. One of our trustworthy Houston furnace technicians will be happy to come to your home and analyze the condition of your furnace. We will give an honest and professional opinion of when you may be ready for a new one.