When a furnace works efficiently year after year, it brings comfort and peace of mind. Here’s what affects a furnace’s lifespan and how you can keep it running at its best.

How Long Should a Furnace Last?

Generally, a well-maintained furnace can last between 15 and 20 years, with some models reaching up to 25 years under ideal conditions. The lifespan can vary depending on the type of furnace, the quality of the installation, and how regularly it receives maintenance. Gas furnaces, commonly used in residential and commercial settings, usually last around 15 to 20 years. Electric furnaces can last up to 30 years due to fewer internal components and lower risk of corrosion.

High-quality brands are designed to withstand heavy usage and typically last on the upper end of this range, provided they are properly maintained. Choosing a furnace from a reputable brand is the first step in ensuring a long service life.

Factors That Influence a Furnace’s Lifespan

1. Maintenance Frequency: If you have certified HVAC technicians perform regular maintenance on your furnace, they can verify that the system runs efficiently, reduce any strain on critical components, and catch small issues before they snowball.
2. Quality of Installation: Proper installation helps the system operate efficiently, avoiding unnecessary wear and tear that leads to frequent breakdowns and premature failure.
3. Usage and Demand: A system running continuously in colder climates will experience more wear and tear compared to a furnace that only runs moderately. While Missouri’s climate isn’t as extreme as other regions, consistently high usage, especially during peak winter months, can shorten the expected service life.
4. Filter Replacement: Regularly changing your furnace filters keeps airflow unobstructed, which reduces strain on the system and helps prevent overheating.
5. Furnace Size and Efficiency: The size of your furnace should match the heating demands of your space. An undersized furnace will work harder to heat a larger area, which can lead to faster deterioration. Conversely, an oversized furnace may short-cycle, causing frequent starts and stops that can wear down the internal parts.

How To Extend Your Furnace’s Life

To maximize the lifespan of your furnace, follow these steps:

• Schedule annual maintenance with a certified HVAC technician.
• Change or clean filters regularly.
• Keep vents and ducts clear for proper airflow.
• Use a programmable thermostat to optimize heating and reduce strain on the furnace.
• Watch for any unusual noises or fluctuations in performance, and address issues promptly.

When To Replace Your Furnace

Increasing repair costs, frequent breakdowns, and uneven heating are common indicators that your system is nearing the end of its life. If your furnace is over 15 years old and requires major repairs, it’s often more cost-effective to invest in a new, energy-efficient model.

Newer models come with advanced features that provide better energy efficiency, quieter operation, and enhanced comfort control. While upfront costs may seem high, the savings in energy bills and reduced repair expenses can offset the cost of a replacement over time.

Connect With the Experts

A well-maintained furnace can reliably heat your space for many years with careful attention to maintenance, usage, and repairs. Regular tune-ups and timely upgrades ensure that your furnace operates at peak efficiency, saving you money and avoiding unexpected breakdowns.

If it’s time for maintenance or a new installation, contact Barnard Heating and Cooling, Carthage’s trusted HVAC experts.