Winter Furnace Maintenance Tips – London

As the crisp chill of winter settles in across London, a reliable and efficient furnace becomes essential for keeping your home warm and comfortable. At London Nitro Heating & Cooling, we know just how important it is to prepare your heating system before temperatures dip too low. A well-maintained furnace not only performs better but also saves on energy costs and extends the life of your equipment.

Here are our top winter furnace maintenance tips to keep your home cozy and your furnace running smoothly all season long:



1. Schedule a Professional Inspection Early

One of the most important steps in furnace maintenance is scheduling a professional inspection before winter sets in. A certified technician can thoroughly examine your heating system for potential issues that may lead to breakdowns during the coldest months.

At London Nitro Heating & Cooling, our team performs comprehensive checks including:

  • Heat exchanger inspection

  • Blower motor testing

  • Burner and flame sensor cleaning

  • Gas line and connection checks

  • Carbon monoxide testing

This ensures your furnace operates safely and at peak efficiency.

2. Replace or Clean Furnace Filters

Dirty or clogged filters are one of the leading causes of furnace inefficiency and can severely reduce airflow, causing your furnace to overwork and wear out faster. Ideally, you should check your filter once a month and replace it every 1 to 3 months, depending on usage and filter type.

Clean filters improve air quality, reduce energy consumption, and keep your system running smoothly—especially during the months when it’s working its hardest.

3. Check Your Thermostat Settings

Before winter hits full force, test your thermostat to ensure it’s working correctly. Consider switching to a programmable or smart thermostat to automatically lower temperatures when you’re not home and raise them before you return.

This small upgrade can help you save significantly on heating costs while ensuring your home remains comfortable around the clock.

4. Inspect Vents and Registers

Blocked or closed vents can restrict airflow and make your furnace work harder than necessary. Walk around your home and make sure all vents and registers are clean and open. Remove any furniture, rugs, or curtains that might be obstructing the heat flow.

Also, vacuum dust and debris around the vents regularly to prevent buildup and promote better air circulation throughout your home.

5. Keep the Furnace Area Clean

Ensure the area around your furnace is clear of boxes, storage items, or flammable materials. This not only reduces the risk of fire but also allows your heating system to breathe and operate safely.

For gas furnaces, adequate ventilation is essential, so a clean and clutter-free space ensures optimal airflow and minimizes hazards.

6. Monitor for Strange Noises or Odours

If you notice unusual sounds such as banging, rattling, or screeching—or detect odd smells coming from your furnace—it’s time to call in a professional. These can be early signs of a serious problem, from worn-out components to gas leaks.

Never ignore warning signs. Quick action can prevent a small issue from turning into a major (and expensive) repair.

7. Test Carbon Monoxide Detectors

Carbon monoxide is a silent, odorless, and deadly gas that can be produced by malfunctioning heating equipment. Make sure you have working CO detectors on every level of your home, especially near sleeping areas.

Test your alarms monthly and replace the batteries at least once a year. This simple step could save your life.

8. Know When to Call the Experts

No matter how well you maintain your furnace, there are times when only a professional can handle the job. If your furnace is older, cycling on and off frequently, or failing to heat your home evenly, it's time to give London Nitro Heating & Cooling a call.

We offer emergency repairs, routine maintenance, and furnace installations across London to ensure your home stays warm all winter long.

Stay Warm with London Nitro Heating & Cooling

Your furnace works hard to keep you comfortable—make sure it gets the attention it deserves. Whether you're preparing for the season ahead or troubleshooting an issue mid-winter, our experienced team is ready to help.

Contact us today to schedule a maintenance appointment and experience peace of mind knowing your furnace is in good hands.


Location: 1965 Upperpoint Gate, London, ON N6K 0L2, Canada

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