Homeowners are advised to check their furnaces before the winter season to ensure they remain warm and comfortable. Furnaces generally last between 15 and 20 years, but several signs can indicate when a replacement may be necessary.
One sign is an unexpected increase in energy bills, which could suggest that the furnace is losing efficiency as it ages. Newer models tend to operate more efficiently and can help reduce operating costs over time.
Another indicator is if the home remains cold despite the furnace running. In such cases, it is important to rule out other causes like thermostat issues or air leaks. If no other explanation is found, homeowners should consider consulting an HVAC professional for an assessment.
Physical signs from the furnace itself—such as corroded parts, cracks, or unusual noises—may also signal that it needs attention. For example, screeching or squealing might mean an adjustment is needed, while banging or grinding could indicate a need for full replacement. Lingering musty smells when turning on the furnace should prompt immediate contact with a specialist.
Improper cycling—when a furnace runs continuously or turns on and off frequently—can point to underlying problems. Uneven heating throughout the house may also mean the system is failing, though issues like blocked airflow or ductwork problems could be at fault.
Frequent repairs are another warning sign; if repair costs exceed half the price of a new unit, replacement may be more cost-effective.
For those with older units approaching 20 years of use, experts note that even if a furnace appears functional, it may soon reach the end of its service life. Waiting until failure during cold weather can pose risks.
Benefits of replacing an old furnace include improved safety due to reduced risk of carbon dioxide leaks from cracked heat exchangers, greater comfort through consistent heating, and lower energy bills thanks to better efficiency.
HVAC professionals can recommend suitable systems based on individual needs and handle installation and maintenance. Homeowners are encouraged not to attempt repairs themselves due to potential risks and possible damage to their property. Licensed specialists at companies like ABC Home & Commercial Services are available around the clock for HVAC repairs and related issues.
