How Can I Make My Furnace Last Longer?

The best things you can do are keep the filter clean, keep air moving freely through the house, have the furnace professionally maintained every year, and respond quickly when something changes. None of it is complicated, and together these habits are what separate a furnace that reaches the far end of its life from one that gives out early.

Most furnaces last somewhere in the range of 15 to 20 years, though a lot depends on how hard they have worked and how well they have been cared for. In the Tri-Cities, where winters are cold enough to keep a furnace busy for months, that care counts.

Start with the filter

A clogged filter forces the blower to pull harder against restriction and lets the furnace run hotter than it should. Over years that extra strain shortens the life of the motor and the heat exchanger. A standard 1 inch filter generally wants changing every one to three months, and more often if you have pets, a dusty house, or have had a smoky late summer.

Mark the dates on a calendar or buy several at once so the next one is always in the closet.

Keep the air moving

Check that supply registers and return grilles are open and unblocked. Closing off many vents to save energy in unused rooms may sound sensible, but it raises pressure in the ducts and can cause the same overheating problem a dirty filter causes. Leave the space around the furnace clear too. Storage boxes, paint cans and laundry piled next to the unit are a nuisance for technicians and can cut off the air the furnace needs.

Ducts matter as well. Disconnected or leaky ductwork makes a furnace run longer to deliver the same heat, and longer run time means more wear. If some rooms are always cold, or you see dust streaks around the registers, ask a technician to look at the duct system rather than just turning the thermostat up.

Get it professionally maintained every year

A technician does things you cannot safely do yourself: cleaning burners and flame sensors, checking the ignition system, measuring gas pressure and temperature rise, inspecting the heat exchanger and testing safety controls. Small worn parts get caught before they take something bigger with them.

Skipping maintenance has a cost that builds quietly. Dirty burners light poorly, a coated flame sensor causes nuisance shutdowns, and a weak ignitor eventually cracks. Each part works a little harder to make up for the last, which is how a minor issue turns into a control board or heat exchanger problem years earlier than it should.

Air-Tech's maintenance plans, called the AT Advantage Program, include two visits a year, so both your heating and cooling equipment get looked at before their busy seasons.

Pay attention to changes

New rattles, a burner flame that looks different, longer run times, rooms that heat unevenly, or a furnace that starts cycling on and off more than usual are all early messages. A repair caught early usually costs less than the damage it causes when ignored, and a furnace that keeps limping along can wear out other parts. If you smell gas or a carbon monoxide alarm sounds, leave the house and call for help right away.

Keep the furnace's age and service history somewhere you can find it, even if it is just a note in your phone. Knowing when it was installed and what has been repaired makes every future decision easier.

Know when replacement makes more sense

Even a well-kept furnace eventually reaches the end. Repeated repairs, rising bills and age at or beyond that 15 to 20 year range are signs to start planning rather than waiting for a failure in January. Air-Tech is a Trane dealer and services all brands, and financing is available through GreenSky if you are weighing a replacement.

For a checkup, or an honest look at where your furnace stands, call Air-Tech at (509) 392-2021.