Filters should generally be replaced every 1-3 months, depending on filter type and household factors like pets or allergies.

Furnaces typically last between 15-20 years with proper maintenance.

Annual maintenance, ideally before the heating season, is recommended to ensure efficiency and longevity.

Furnace size depends on factors like square footage, insulation quality, and local climate; a professional can perform a load calculation for accuracy.

Frequent repairs, rising energy bills, uneven heating, or an aging unit (15+ years) are signs that it might be time to consider replacement.

Keeping it around 68°F (20°C) when home and lowering it slightly when away can save energy without sacrificing comfort.

While some noise is normal, loud banging, rattling, or squealing can indicate a problem that needs professional attention.

This could be due to several reasons, such as thermostat issues, pilot light problems, or airflow blockages, requiring inspection.

Furnace installation is complex and requires licensed technicians to meet safety and warranty standards.

The pilot light ignites the burners; if it goes out, your furnace can’t produce heat and may require relighting or repair.

Regular maintenance, using programmable thermostats, and ensuring proper insulation all help improve efficiency.

A dusty smell at the season’s start is common but should fade; if it persists or smells like gas, it could indicate a problem.

Yes, especially if filters aren’t replaced regularly or the system isn’t maintained, which can lead to dust, allergens, or mold circulation.

Check the thermostat, power supply, and filter first; if it’s still not working, call a professional for emergency service.