Book furnace service when heating becomes unreliable, airflow weakens, unfamiliar noises appear, or the system repeatedly starts and stops before the house warms up. A yearly heating check also matters when everything seems to work. First, separate a routine service concern from an emergency.
Gas smells and carbon monoxide alarms need immediate action
If you smell gas or suspect a leak, leave immediately. Do not operate switches, adjust the thermostat, use a phone inside, relight equipment, or touch gas valves. From a safe distance outside, call 911 and your gas utility’s emergency number. Atmos Energy’s gas-safety guidance explains these precautions.
If a carbon monoxide alarm sounds or you suspect CO poisoning, get everyone outside to fresh air and call 911. Do not search for the source or re-enter until emergency responders allow it. CO has no smell. A routine HVAC appointment must never delay emergency help. Read the CPSC’s carbon monoxide guidance.
Changes worth reporting to a technician
- Weak heat or airflow: The house no longer reaches its usual temperature, or rooms that were comfortable stay cold. Airflow, controls, ducts, and equipment can all contribute; the symptom alone does not identify a failed part.
- Repeated starts and stops: Brief heating attempts that leave the house cold warrant attention. If shutdowns continue, stop using the furnace and request service. Do not force repeated restarts or bypass safety controls.
- New noises, persistent burning odors, or visible soot: If there is smoke, fire, or immediate danger, leave and call 911 from a safe location outside. For a gas smell or CO concern, follow the emergency instructions above. Otherwise, stop the equipment only if safe and do not restart it until a qualified technician has assessed it.
- Higher heating use or recurring repairs: Note the change, especially if comfort has worsened too. Compare energy use, billing days, rates, and weather before treating a higher bill as proof of a furnace fault.
Keep homeowner checks simple
Only make ordinary checks when there is no gas odor, alarm, or other sign of danger. Read the thermostat’s mode, set temperature, schedule, and any error message. Check that furniture or rugs are not covering room vents or return grilles.
A dirty filter can restrict airflow and increase furnace runtime. Check your filter-change record. Before replacing an easily accessible, homeowner-serviceable filter, follow the equipment manual’s shutdown instructions. Do not open equipment service panels. Leave difficult access, gas components, and electrical testing to a qualified technician. You do not need to open the furnace to prepare for a service call.
Schedule maintenance before you rely on the heat
ENERGY STAR recommends annual preseason maintenance, including a heating check in the fall. For a Greater New Orleans household, that means planning ahead rather than waiting for a cold morning to reveal a problem.
Ask what the visit includes for your equipment. Professional checks may cover operating controls, electrical connections, and airflow; fuel-burning systems also need attention to combustion, gas connections, the heat exchanger, and venting. An inspection helps determine the next step. It does not automatically mean the furnace needs replacement.
Make the service conversation useful
Write down when the problem began, affected rooms, thermostat messages, and the last service date you know. For a non-emergency concern, explore Tegridy Air’s residential furnace repair or contact the team. Share what you have noticed so the visit can start with the right questions.