Furnaces are a key player in keeping homes and small businesses warm during frigid winters. In northern states like New York and Pennsylvania, heating systems work hard for months at a time. Over time, however, this constant wear and tear can lead to performance issues and safety concerns.
In this article, we’ll explain the difference between a repairable issue and an irreparable one, to assist in making the decision to purchase a new furnace or fix the current one.
How Long Does a Furnace Last?
Most furnaces generally last between 15 and 20 years with proper maintenance. However, lifespan can vary depending on the fuel type and system quality.
As furnaces age, internal components experience increased strain. Efficiency may decrease, and repairs often become more frequent. In northern states like New York and Pennsylvania, where winters can be particularly cold, furnaces often run consistently from late fall through early spring, causing aging systems to wear down faster than anticipated.
Signs Your Furnace Needs To Be Replaced
Though some furnace problems can be repaired, these signs suggest replacement may be the better long-term option.
Age
For furnaces over 15 years old that are experiencing issues, replacement is often more practical than repeated repairs.
Rising and Inconsistent Energy Bills
If you’re reviewing your utility bill and notice heating costs continue to rise despite stable usage, your furnace may be losing efficiency. Older systems often require more fuel or electricity to produce the same level of heat.
Frequent and Costly Repairs
If multiple repairs have been needed within a short period, replacing the system may lead to better performance and help avoid additional unexpected repairs.
Uneven Heating Throughout Your Home
Cold spots or inconsistent temperatures throughout the home or business may be the result of worn parts or an aging system. Replacing the furnace can help fix these issues.
Strange Noises
Though some noises are normal for furnaces, loud banging, rattling, grinding, or squealing sounds are not. These noises often result from defective components or structural issues.
Yellow or Flickering Pilot Light
A healthy pilot light should burn blue. A yellow or flickering flame can result from combustion problems, which require professional attention.
Damage From Rust, Cracks, or Corrosion
Visible rust or cracks in the heat exchanger can pose safety risks. Significant damage of this kind cannot simply be repaired and will require a full replacement.
Poor Indoor Air Quality
An aging or damaged furnace may circulate dust, dry air, or unpleasant odors throughout the home or business. If indoor air feels stale or if allergy symptoms increase, the system may not be filtering or distributing air effectively.
Furnace Cycles On and Off Frequently
Short cycling occurs when a furnace turns on and off more frequently than normal. This pattern increases wear on components and reduces efficiency. Short cycling can result from thermostat issues, airflow restrictions, or aging systems that can no longer maintain steady operation.
Carbon Monoxide Detector Alerts
If a carbon monoxide detector activates, turn off the furnace immediately and seek professional assistance. Though not every alert means a replacement is necessary, repeated warnings often indicate serious internal issues.
Furnace Repair vs. Replacement
When Repair Makes Sense
- The furnace is under 10 years old
- The issue is minor and isolated
- Repair costs are relatively low
- The system has otherwise operated reliably
When Replacement Makes Sense
- The furnace is nearing or past its expected lifespan
- Multiple issues occurring at once
- Repair costs are high
- Safety concerns are present
- Energy efficiency has notably declined
How to Extend Your Furnace’s Lifespan
Even if replacement isn’t necessary yet, proper care can help maximize its performance.
- Schedule Regular Maintenance: Annual professional inspections can help identify small issues before they become larger problems.
- Replace Filters Regularly: Clogged filters restrict airflow and increase strain on systems.
- Maintain Reasonable Thermostat Settings: Avoid extreme temperature swings by gradually adjusting the temperature.
- Keep Vents and Ducts Clear: Blocked vents can disrupt airflow and force the furnace to work harder than necessary.
Keep Your Home or Small Business Warm All Winter Long With Agway®
Furnace problems often start small, but early attention can prevent larger disruptions during the coldest months of the year. Understanding warning signs and acting promptly can help protect your comfort and safety throughout the winter.
Call Agway if you encounter a problem with a covered system. Our reps will send a local contractor to you to diagnose and repair the issue. You can also contact Agway Energy Services® for vendor referrals if you need professional inspections or diagnostics outside of the EnergyGuard repair program. With Agway, staying prepared is possible no matter how cold the season gets.
New Furnace FAQs
Should I replace my furnace myself?
No, you should not attempt to replace your furnace yourself. Furnace replacement should always be handled by licensed professionals, since installation involves gas, electrical, and ventilation systems that require technical expertise.
What time of year is best to replace a furnace?
Most homeowners schedule furnace replacement during spring or early fall to prepare for peak heating season. Planning ahead can help you avoid emergency replacements during the winter.
Will a new furnace lower my energy bills?
In many cases, yes, a new furnace can lower your energy bills. Newer systems are often more efficient than older models, resulting in less energy use for the same amount of heating. However, actual energy usage depends on your system size, home insulation, and thermostat settings.
Do I need to replace my air conditioner at the same time?
No, you don’t always need to replace your air conditioner at the same time as your furnace. If your air conditioner is newer and still compatible with your new heating system, no action is required.
Can switching energy providers help offset the cost of a new furnace?
Energy suppliers provide the electricity or natural gas used by your system, but they don’t control equipment costs. However, enrollment in eligible programs like EnergyGuard can help cut costs by addressing common issues related to wear and tear*.
*Coverage depends on commodity purchased.
