Furnace Repair London – Reliance provides fast, reliable repair and emergency service.

Furnace repair service for your home when you need it.

When it comes to keeping your home comfortable and warm without interruptions, the friendly, professional furnace repair technicians at Reliance Home Comfort have you covered. If your furnace or boiler stops working, our team is always just a phone call away.

No matter what part of London you live in, we can be at your home fast to service or repair your furnace. We have extensive experience in repairing different makes, models and types of home heating systems. Our expert furnace technicians will get the job done right, so you can get back to relaxing in comfort after a day on the slopes at Boler Mountain or walking along the Thames River.

Regular furnace maintenance can help prevent heating interruptions. Booking an annual service means your home heating system will be ready for winter. With Reliance™, scheduling your service or furnace repair is as easy as giving us a call or booking online.

High Efficiency Furnace Working in London Home

Check out our furnace resources to learn more about your furnace. https://reliancehomecomfort.com/london/furnace-resources/

Your 5-point furnace repair checklist

With a large network of London-based furnace technicians, Reliance™ is always happy to send professional help to your door. But sometimes the fix is as easy as one-two-three. Here are five things any homeowner can check. They might just save you the cost and inconvenience of an unnecessary call.

Check your thermostat – Is it set to ‘heat?’ It’s easy to forget to make the switch when the weather turns cold.

Check your furnace disconnect switch – Is it turned to the ‘on’ position? You’ll find your furnace disconnect switch on the side of the unit or nearby on the wall. If it gets turned off by mistake your furnace won’t have any power, and your home won’t have any heat.

Check your home’s circuit breaker panel or fuse box – Is the breaker marked ‘furnace’ in the right position?

Check your furnace vents – Your home has exterior furnace vents that connect your furnace to the outside of your house. If they become blocked by snow, ice, debris, or even small animals your furnace won’t perform properly. A thorough furnace vent inspection should be left to an HVAC professional.
Check the age of your furnace filter – If you can’t remember the last time you replaced your furnace filter, chances are it’s overdue. Most furnace filters need to be cleaned or changed every three months or according to the manufacturer’s recommendations to keep your unit running efficiently.

Kids Enjoying Their Warm House in London

CLICK HERE to schedule furnace repairs and maintenance in London.
Call for emergency service.


How do I know if I have a furnace or a boiler system?

If your home is heated by warm air blowing through vents you have a furnace. If the rooms in your home have radiators, your house is heated by a boiler system.

How does my furnace work?

Your furnace ignites fuel inside a combustion chamber. This warms up a coiled tube called a heat exchanger. When air is drawn across the coils it is warmed and then distributed through the ductwork to rooms in your home.

How does my boiler work?

Your boiler heats up a liquid, which is usually water or glycol. This is pumped to radiators, radiant heating, and fan coils located throughout your home.

What can I do to save money on my heating bills?

  • Seal up any leaky windows and other cracks in your home to prevent heat loss.
  • Consider investing in new windows if necessary.
  • Check to make sure your basement and attic are properly insulated.
  • When it’s time to upgrade your furnace choose a modern high efficiency condensing furnace.
  • Consider a programmable thermostat. You’ll be able to monitor and control your energy use when you are at home or away.

A professional energy auditor can help you identify opportunities to conserve energy. You may be eligible for government rebates to help you cover the costs.

Why should I invest in a high efficiency furnace?

Investing in a high efficiency furnace allows you to conserve energy without sacrificing warmth and comfort. Today’s high efficiency furnaces us smart technology so you are always in control of your energy use. They have AFUE ratings between 92% and 98%. Your Reliance Home Comfort Advisor™ can help you choose the right furnace for your home and budget, and you always have the option to rent or buy.

Why should my home comfort system include a whole home humidifier?

A whole home humidifier keeps the humidity levels in your home stable, regardless of the weather outside. This can promote healthy air inside your home and may help your furnace work more efficiently. Many people consider a whole home humidifier an investment in their health and in their home.

What can I do to maintain my furnace?

It’s always a good idea to book an annual furnace inspection and service by an HVAC professional. This may help prevent unexpected interruptions in your heating during the winter months and will keep your furnace running efficiently. Here are a few things you can do between inspections:

  • Change your furnace filter every three months, or according to the recommendations of your manufacturer.
  • Dust your home heating vents and radiators and keep them clear of furniture and other items.
  • Create a clutter-free area around your furnace unit.
  • Make sure your exterior exhaust vents do not become blocked by snow, ice, or other debris.

Please note that your furnace unit should only be opened by a qualified professional.

Here are a few spring furnace maintenance tips.

What furnace problems need immediate attention?

If you notice any of the following, it’s a good idea to seek the help of a professional furnace technician:

  • Water leaking from your furnace unit.
  • Strange noises coming from your furnace unit.
  • No hot air coming from your heating vents.
  • Excessive dust in your home for no apparent reason.
  • An unexpected spike in your heating bills.

How do I decide if it’s better to buy or rent my new furnace?

When it comes to upgrading your heating equipment, choosing whether to rent or buy may be one of the most important decisions you’ll make. Both renting and buying are great options. It really comes down to your needs, your lifestyle, and your budget. Here’s what you’ll need to consider:

If you buy – You’ll pay for your home heating system upfront, and will be responsible for all maintenance and repairs as soon as your warranty expires. A new furnace can add value to your home, you may be able to take advantage of government rebates and incentives, and you can protect yourself against unexpected repair costs with a Comprehensive Protection Plan from Reliance™.

If you rent – There is no upfront cost. You’ll pay for your system through affordable monthly payments and Reliance Home Comfort™ will cover maintenance and most repairs. You may qualify for available government rebates and incentives.

Regardless of whether you decide to rent or buy, when you choose Reliance™ you’ll have access to free 24/7 live support, 365 days a year.

Furnace Repairs and Maintenance in London

Should I upgrade my AC when I replace my furnace?

It can be a good idea to replace your AC and your furnace at the same time. That’s because units designed to work together are more energy efficient and may help you save on your residential energy bills.


  • More than 60 years of experience keeping Canadians comfortable.
  • Our team of London-based HVAC professionals who can be at your home fast.
  • Free live telephone support 24/7/365.
  • Transparent upfront pricing for your furnace repairs.
  • A 10% discount on your furnace repair bill* when you sign up for any Reliance Home Comfort™

Maintenance or Protection Plan

  • Flexible payment options, including Visa, MasterCard and Cheques.
  • Furnace Technician Code of Conduct, so you know you’ll always be treated the way you deserve.
  • Home Heating Guarantees that are hard to beat. Learn more about our guarantees.

If you have any home heating questions or concerns, Call on Reliance™. We’re here to help!

CLICK HERE to schedule furnace repairs and maintenance in London.
Call for emergency service.

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