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Furnace Maintenance Checklist: How to Keep Your System Running Smoothly in Toronto

Regular furnace maintenance is the secret to a warm, safe, and energy-efficient home—especially in Toronto’s long, chilly winters. At Temperature Care, we help homeowners avoid breakdowns, lower their energy bills, and maximize furnace lifespan with a complete maintenance program. Here’s a comprehensive furnace maintenance checklist every Toronto homeowner should know.

Why Furnace Maintenance Matters

Prevents costly repairs by catching small problems early
Improves energy efficiency, saving you money on heating bills
Keeps your home safe by detecting carbon monoxide leaks and fire hazards
Maintains manufacturer’s warranty (most brands require annual service)
Extends the life of your furnace, delaying expensive replacements

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The Ultimate Furnace Maintenance Checklist

1. Replace or clean air filters:
Dirty filters restrict airflow, overwork your furnace, and lower air quality. Change or clean every 1-3 months.

2. Inspect the thermostat:
Test accuracy and program settings for optimal comfort and efficiency.

3. Clean burners and flame sensor:
Dirt and debris can cause ignition problems and inefficient combustion.

4. Check heat exchanger:
Look for cracks or corrosion to prevent dangerous carbon monoxide leaks.

5. Lubricate moving parts:
Fans, motors, and bearings should move smoothly and quietly.

6. Inspect and tighten electrical connections:
Loose wires are a fire and reliability hazard.

7. Test system startup and shutdown:
Ensure your furnace operates smoothly from start to finish.

8. Check gas pressure and connections:
Gas leaks are a major safety risk—leave this step to the professionals!

9. Inspect flue and vent system:
Blockages or corrosion can lead to carbon monoxide exposure.

10. Clean blower assembly and belts:
Remove dust for quiet, efficient operation.

For a printable checklist and more detailed DIY steps, visit Energy Star’s Furnace Maintenance Guide

How Often Should You Service Your Furnace?

We recommend a professional tune-up once a year, ideally in early fall before the first cold snap. Regular DIY steps like filter changes can be done monthly.