Buying a furnace is always a big deal, especially for your home and family. Getting the details right matters because you want your furnace to last.

How Long Does a Furnace Last?

The lifespan of a furnace depends on the type, usage, and maintenance. On average, residential furnaces last about 15 years. Here are the main types of furnaces:

• Gas Furnaces: Last about 15 to 20 years.
• Electric Furnaces: Last around 20 to 25 years.
• Boilers: Last 15 to 25 years, depending on the type and radiator equipment.

Electric furnaces tend to last the longest since they have fewer moving parts, but they are usually more expensive to run. Gas furnaces have a high upfront cost and a shorter lifespan but are more efficient to run monthly. Modern boilers can easily last 20 years, while older cast-iron boilers can last over 50 years! Stainless steel boilers also have a long lifespan and are easy to maintain.

Signs You Need a Furnace Replacement

Understanding when to replace your furnace helps you avoid high maintenance costs. Here are some common signs you need a new furnace:

• Increased Energy Bills: Older furnaces work harder and cost more to run.
• Uneven Heating: Cold spots around the house indicate your heater is struggling.
• Poor Air Quality: Aging furnaces filter particles less effectively, affecting allergies or causing respiratory problems.
• More Dust: Excessive dust on surfaces and vents means it’s time for a replacement.
• Loud Noises: Grinding, popping, and scraping sounds indicate larger problems.
• Yellow Pilot Light Flame: The flame should be blue. Yellow flames can mean a damaged gas burner and point to carbon monoxide, needing immediate attention.
• Frequent Repairs: If your furnace is over 15 years old and needs frequent repairs, it’s more cost-effective to get a new one.

If the cost to repair your furnace is about 50% of the cost of a full replacement, buying a new unit will save you money in the long run.

Extending Your Furnace’s Lifespan

Here are some tips to minimize furnace replacement frequency:

• Change Filters Every Six Months: Replace your furnace filter at least every six months or every three months if you use it often. Clogged filters restrict airflow and strain the system.
• Get Regular Furnace Maintenance: Schedule maintenance once a year. A typical checklist includes inspecting the heat exchange, cleaning gas burners, changing air filters, checking electrical components, testing the thermostat, and cleaning vents. The best time for maintenance is early fall before winter or in spring after the busy season.
• Clean and Seal Ductwork: Heat loss from leaky ducts wastes energy and makes your heater work harder, wearing out components faster. Cleaning and sealing your ductwork improves heating performance, saves on repair costs, and improves indoor air quality.

Hiring a local HVAC contractor in Wellington ensures you get personalized, expert solutions for your furnace needs, keeping your home comfortable year-round. Regular maintenance and timely replacements help extend the lifespan of your furnace and keep your heating system running efficiently.