Furnaces don’t last forever. But how do you know when it’s really time to replace yours and when a simple repair will do the trick?
If your home is colder than it should be during the winter, or your energy bills keep climbing, your furnace might be trying to tell you something. While replacing a furnace is a big investment, recognizing the warning signs early can help you plan ahead and avoid a sudden breakdown.
Here’s how to know when it’s time to consider furnace replacement in Denver, CO, and what factors to weigh before making the decision.
How Long Does a Furnace Last?
Most residential furnaces last 15 to 20 years, especially when they’ve been properly maintained. If your system is older than that—or nearing the end of that range—you’ll want to keep a closer eye on its performance.
Even newer systems may need early replacement if:
- Maintenance has been irregular
- The system is improperly sized for the home
- Components are showing premature wear
5 Clear Signs It Might Be Time to Replace Your Furnace
1. It’s 15+ Years Old
If your furnace is over 15 years old, it’s on borrowed time. Older models are less energy-efficient and more prone to failure. Look up your furnace’s model number or consult a technician to determine its exact age.
Pro tip: If your system was already installed when you bought the home, it’s worth verifying its condition and estimated lifespan.
2. Energy Bills Keep Rising
A sudden or steady increase in your energy bills, especially during the winter months, could mean your furnace is losing efficiency. Even with regular filter changes and tune-ups, older systems begin to strain and use more energy.
If your HVAC pro has ruled out other causes and your bills are still rising, furnace replacement may be more cost-effective than continuing repairs.
3. Uneven Heating or Cold Spots
If some rooms in your home are warmer than others, or if you can’t get consistent temperatures throughout the house, your furnace might be struggling to push heat evenly. Uneven heating can mean your blower motor, ducts, or even the furnace size itself is no longer effective.
4. Dust, Allergens, or Poor Indoor Air Quality
A properly functioning furnace filters out dust, allergens, and other airborne particles. If you notice more dust around your home, even with regular cleaning, it might be time for a new system with better filtration and airflow capabilities.
5. Frequent Repairs or Strange Noises
If you’ve had multiple furnace repairs in the past two years, you’re likely spending more than the system is worth. Persistent issues, clanking noises, or odd smells could all signal deeper mechanical failure.
Should You Repair or Replace Your Furnace?
Here’s a general rule of thumb:
If your repair costs are more than 50% of the cost of a new furnace, or your system is over 15 years old, replacement is usually the smarter long-term choice.
Need a Professional Opinion?
Before jumping into a replacement, get a professional inspection. At Gale Force Heating and Air, we’ll provide a free estimate and honest assessment of whether repair or replacement is the right move for your home.
Call today to schedule a furnace inspection or replacement quote. Stay warm, breathe clean, and save money this winter.
