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FAQ Furnace Maintenance
How often should I replace my furnace filter?
Filters should generally be replaced every 1-3 months, depending on filter type and household factors like pets or allergies.
What is the average lifespan of a furnace?
Furnaces typically last between 15-20 years with proper maintenance.
How often should I have my furnace serviced?
Annual maintenance, ideally before the heating season, is recommended to ensure efficiency and longevity.
What size furnace do I need for my home?
Furnace size depends on factors like square footage, insulation quality, and local climate; a professional can perform a load calculation for accuracy.
How do I know if my furnace needs to be repaired or replaced?
Frequent repairs, rising energy bills, uneven heating, or an aging unit (15+ years) are signs that it might be time to consider replacement.
What temperature should I set my thermostat to for optimal efficiency?
Keeping it around 68°F (20°C) when home and lowering it slightly when away can save energy without sacrificing comfort.
Is it normal for my furnace to make noise?
While some noise is normal, loud banging, rattling, or squealing can indicate a problem that needs professional attention.
Why is my furnace blowing cold air?
This could be due to several reasons, such as thermostat issues, pilot light problems, or airflow blockages, requiring inspection.
Can I install a furnace myself?
Furnace installation is complex and requires licensed technicians to meet safety and warranty standards.
What is the purpose of the furnace’s pilot light?
The pilot light ignites the burners; if it goes out, your furnace can’t produce heat and may require relighting or repair.
How can I improve my furnace's energy efficiency?
Regular maintenance, using programmable thermostats, and ensuring proper insulation all help improve efficiency.
Why does my furnace smell strange when I first turn it on?
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.
Can a furnace impact indoor air quality?
Yes, especially if filters aren’t replaced regularly or the system isn’t maintained, which can lead to dust, allergens, or mold circulation.
What should I do if my furnace stops working in cold weather?
Check the thermostat, power supply, and filter first; if it’s still not working, call a professional for emergency service.
