As temperatures drop, many homeowners wonder whether an annual furnace service is really necessary—or just another seasonal sales pitch. According to Denny Denker, Chief Scientist and Co-Founder of HomeBoost, an AI-powered home energy assessment platform, that fall checkup plays a critical role in both comfort and safety.
Why Annual Service Matters
Yes, homeowners should schedule a professional furnace inspection every fall—especially if the system runs on gas or oil. “Over time, dust buildup, clogged filters, and worn components can all impact efficiency and performance,” says Denker. “Even more concerning, they can create safety hazards such as carbon monoxide leaks.”
A fall tune-up helps ensure your heating system runs efficiently during peak months, reduces the risk of breakdowns, and can extend the lifespan of expensive equipment. Think of it as preventive medicine for your home.
When You Might Be Able to Wait
If your furnace is less than two years old, has clean filters, and was professionally serviced the prior year, you might stretch the interval to 18–24 months. The key, Denker says, is to watch for changes in performance. “If you notice strange noises, odors, or uneven heat, don’t wait. Those are early warning signs that your system needs attention.”
Skipping regular service may seem like a way to save money, but small problems often compound into costly repairs—or higher monthly energy bills—down the line.
Simple HVAC Maintenance You Can Do Yourself
While a professional should handle annual inspections and combustion testing, homeowners can take several easy steps to keep systems running smoothly:
Replace or clean filters every 1–3 months during the heating season.
Vacuum air vents and returns to reduce dust and debris buildup.
Check thermostat settings to ensure the system cycles properly and maintains comfort.
Clear the area around the furnace—keep boxes, paint cans, and clutter away from air intakes.
Monitor your energy bills. A sudden spike could signal restricted airflow or an internal mechanical issue.
When It’s an Emergency
Certain signs mean it’s time to call in a pro—immediately:
You smell gas or notice burning or metallic odors.
The furnace short cycles (turns on and off frequently) or fails to reach the set temperature.
The system runs louder than usual or makes banging or whistling noises.
You’re expecting an extended cold snap or family gathering and want to prevent a midwinter breakdown.
You’ve just finished a home renovation or ductwork modification, which can introduce debris into the system.
Keeping your furnace healthy doesn’t just ensure comfort—it protects your home and your wallet. A little preventive maintenance today can mean a safer, warmer, and more efficient winter ahead.