Best Practices for Furnace Maintenance

It’s during cold snaps like this that we are especially grateful for a reliable heating system. Whether it’s a boiler, heat pump, or a furnace, regular maintenance is essential to ensure your heating system runs efficiently and safely, providing a warm, comfortable home. Proper maintenance can extend the life of your heating system, save energy costs, and reduce the likelihood of unexpected breakdowns. For the purpose of this blog today we will be discussing furnaces specifically, but for all systems, contact a trusted HVAC professional to discuss a maintenance strategy. We chatted with our friends at Norfolk Mechanical in Port Dover to put together a detailed guide to best practices, a maintenance schedule, and key do’s and don’ts.

Furnace Maintenance Schedule

Monthly

• Check and Replace Air Filters: Dirty filters reduce airflow and efficiency. Inspect the filter every month and replace it if it appears clogged or dirty. Most filters should be replaced every 1-3 months.

• Inspect Air Vents: Ensure vents and registers are clear of obstructions like furniture, rugs, or debris.

Seasonal (Before Winter)

• Clean Furnace Components: Dust and vacuum around the furnace to prevent debris from affecting performance.

• Test the Thermostat: Ensure it’s calibrated and working correctly by setting the temperature to ensure the furnace responds (consider a “smart” thermostat).

• Check Carbon Monoxide Detectors: Replace batteries and verify functionality, as furnaces can produce carbon monoxide.

Annually

• Professional Inspection: Schedule an annual tune-up with a licensed HVAC technician to inspect, clean, and service the furnace.

• Inspect Ductwork: Check for leaks or damage in the ducts and seal them to prevent energy loss.

• Lubricate Moving Parts: Have a professional lubricate bearings and other moving components to minimize wear and tear.

• Clean the Blower: Dust buildup on the blower can reduce efficiency.

Every Few Years

• Inspect the Heat Exchanger: Cracks or damage can cause carbon monoxide leaks. This is typically done by professionals.

• Upgrade to a Smart Thermostat: For better control and energy efficiency, consider upgrading your thermostat.

Furnace Maintenance Do’s and Don’ts

Do’s

1. Schedule Regular Maintenance: Consistent upkeep ensures your furnace operates at peak performance.

2. Monitor Energy Bills: An unexplained increase may indicate furnace inefficiency or problems.

3. Keep the Area Around the Furnace Clear: Maintain at least 3 feet of space around the furnace for proper airflow and easy access.

4. Check Pilot Light: For older models with pilot lights, ensure the flame is steady and blue. A yellow or flickering flame may indicate a problem.

5. Use the Correct Filter Size: Incorrect sizes can lead to poor air filtration and reduced efficiency.

Don’ts

1. Neglect Filter Replacement: Dirty filters strain the furnace, increasing wear and energy costs.

2. Block Air Vents: Obstructed airflow forces the furnace to work harder, leading to higher energy bills and possible damage.

3. DIY Repairs: Always call a professional for complex issues, especially with gas or electrical components.

4. Ignore Unusual Noises: Banging, whistling, or rattling sounds can indicate mechanical problems.

5. Skip Regular Inspections: Delaying annual check-ups can lead to expensive repairs and reduced efficiency.

Signs Your Furnace Needs Immediate Attention

• Unusual noises or smells.

• Inconsistent or inadequate heating.

• Higher-than-normal energy bills.

• Discoloured pilot light (yellow instead of blue).

• Frequent cycling on and off.

Proper furnace maintenance ensures a warm and safe home during the colder months. By using this guide as an example and adhering to a regular schedule like the one suggested, you can prevent most issues and keep your heating system in top condition. Remember to rely on professionals for annual inspections and complex repairs—it’s a small investment for long-term peace of mind. I think I’ll go make that call now…