COMPLETE FURNACE BUYING GUIDE

✔ Expert-reviewed for accuracy and completeness. Learn more

Furnace Prices and Replacement Costs

Click here for our full furnace price guide, featuring a more detailed breakdown of furnace costs >>

The average cost of buying a new furnace, or replacing your furnace in Canada varies based on a variety of factors. Typically, a new residential gas furnace including installation, will cost between $3,000 – $6,000 on average.

This price is just a general estimate of course, and you’ll typically have to get a free in-home estimate done by a local HVAC contractor to get an actual price based on your home and your needs, and budget.

Things that can affect the price include:

• Where you live (prices can vary by region/city/province, as well as rural vs urban areas)
• Your home (the size and age of your home can impact the type and size of furnace needed; every home is different)
• How old your current system is (older systems may need more retrofitting work to meet modern building codes)
• Is it a conversion? If you’re converting from oil or electric to gas or propane, this will typically be a bit more complex and expensive
• The brand and model of furnace you buy

These are some of the main factors that will affect the price of a new high-efficiency furnace for Canadian homeowners.

Top Furnace Brands

There are many furnace brands sold in Canada. They all have their pros and cons, however in most cases their products are actually quite similar.

Some of the most popular brands include:

• Lennox
• Carrier
• Goodman
• KeepRite
• Amana
• Trane
• Rheem
• Ruud
• Payne
• Napoleon
• York
• among many others

See our list of the Best Furnaces for more recommendation on which furnace brand and which model you should you buy.

Important Considerations About Furnace Reliability

One of a homeowner’s main concerns when buying a new furnace is which brand is most reliable and which one they should buy. But while some may be considered better than others, there is no definitive answer.

This is mainly because the reliability of a furnace often depends on a variety of factors, including how well maintained it is, and arguably more importantly, the quality of workmanship of the installation.

Something most Canadian homeowners may not realize is that the HVAC contractor you select to buy your furnace from is just as important as the brand of furnace you choose.

Why? Because not only do you want an established and experienced company that will do a good job (just like any other home renovation job), but you will also be relying on this company to provide ongoing support.

That’s why we recommend choosing a company that offers a good warranty on the labour and installation (ideally, at least 1 year). And most importantly, they should have all the necessary licenses and certifications, insurance, and a good reputation.

That’s why we created an extensive independent 15-point Certification program to make choosing a reliable and trusted local HVAC contractor quick and easy for Canadians!

When Should You Replace Your Furnace?

1. Age of your furnace: If your furnace is over ten years old there’s a good chance that it is not a particularly energy-efficient model or that it may no longer be operating at its initial efficiency level. Many homeowners don’t have their furnaces cleaned and properly maintained every year, which leads to a gradual reduction in operating efficiency. You may be surprised to learn that your 15, 20 or 25-year old furnace is actually only operating at 50 – 60% AFUE (a measure of efficiency), meaning nearly half your utility costs are completely wasted. Upgrading to a new furnace could mean a reduction in up to 40% in annual heating bills.
2. Rising utility bills: Newer furnaces, especially ENERGY STAR® models (95% AFUE and above) waste less energy which means more money in your pocket. Greater efficiency also means less of an impact on the environment.
3. Broken furnace and/or expensive repairs: Your furnace has reached the end of its lifespan and repair costs are more costly than purchasing new. Especially when you factor in the potential savings on your utility bills.

How long does a furnace usually last?

Most furnaces should last at least 10 to 15 years, and can last as long as 20+ years with proper maintenance and a little bit of luck. That being said, you may wish to replace your furnace before that point if it starts to require frequent costly repairs and replacing it becomes a more cost-effective option.

Further reading: The TRUTH About Furnace (and A/C) Reliability

High-Efficiency Furnaces – The Basics

A furnace provides central heating throughout your home.  There are several types of heating systems with one of the most common in Canada being a forced-air furnace.  Forced-air furnaces work by blowing heated air through ducts that deliver the warm air to rooms throughout the house via air registers.  This is a preferred method amongst consumers because it provides heat quickly and it has a quick recovery time when temperature is decreased overnight to save energy, so it doesn’t take long for the home to warm back up again in the morning.

The forced-air furnace when coupled with an efficient fan and motor can help the air conditioning unit send cold air throughout the house as well.  Providing the consumer more value for their money.

Energy-efficient furnaces can also make your home more attractive for resale value, as more and more consumers are conscious of the environment and how their energy dollars are being spent. Replacing your furnace is a fairly significant investment, so knowing that it has been recently upgraded is always a bonus for a potential home buyer.

When choosing a furnace for your home it is important to educate yourself on the following factors: estimated annual energy consumption, operating cost and energy efficiency rating of the furnace.

FAQ

Furnace Types – Single Stage vs. Dual Stage vs. Variable Speed vs. Modulating Furnaces

These are the four major “types” of furnace, though a furnace can be both modulating and variable speed (as this refers to burner type and blower speed, respectively). Here’s a comparison of the pros and cons of each one.

See here to read our more in-depth breakdown and comparison of furnace types.

Single Stage

As it sounds, only one stage.  With a single-stage model, your furnace is either on or it is off, there’s no in-between.

Pros of Single Stage Furnaces:

• somewhat lower initial price

Cons of Single Stage Furnaces:

• inefficient energy use
• inconsistent temperature delivery throughout your home
• inconsistent temperature control; frequent hot-cold fluctuations
• noisy
• higher energy bills

Dual Stage

A dual-stage furnace has high and low settings. It starts off in the first stage which is low output.  The low output stage meets your home’s heating needs 80% of the time.  It switches to the second stage which is high output in response to extreme cold weather changes

Pros of Dual Stage or Two-Stage Furnace:

• improved temperature delivery throughout your home
• better temperature control
• efficient energy use
• adjusts to weather changes
• lower energy bills
• quiet

Cons of Dual Stage or Two-Stage Furnace:

• somewhat higher initial price than single stage

Variable/Multi-Speed

This refers specifically to the blower, which monitors and adjusts incrementally, to ensure the highest comfort and most precise heat distribution throughout your home

Pros of Variable/Multi-Speed Furnaces:

• more efficient
• provides better airflow
• quieter
• ECM (an energy efficient) motor: decreases furnace electrical energy consumption by 70% when used continuously

Cons of Variable/Multi-Speed Furnaces:

• somewhat higher initial price

Modulating

This refers specifically to the burner, which adjusts incrementally in order to respond to the heat demands of the home

Pros of Modulating Furnaces:

• improved temperature delivery throughout your home
• better temperature control
• efficient energy use
• equipped with variable speed blower

Cons of Modulating Furnaces:

• initial cost of purchase is usually more expensive

Advanced Furnace Features

The following features and technology are often featured on top-of-the-line ENERGY STAR furnaces. There is certainly nothing wrong with buying a heating system that doesn’t have any of these features, but for those looking for peak performance and efficiency, look for the following. However, furnaces with these features rarely come cheap!

• ECM Motors
• Dual heat exchangers: when two heat exchangers are used the furnace is able to draw more heat from the burned gas, which makes them more energy efficient
• Ignition systems: pilot lights are becoming a thing of the past, in favour of an electronic ignition system which increases a furnace’s efficiency rating.
• Programmable & “smart” thermostats: Not a furnace feature per se, more of an add-on. But programmable thermostats are easy to use and will save you money. New ‘smart’ thermostats can learn from your personal heating preferences and adjust your home’s heating automatically, like lowering the temperature during the day when you’re at work. Turning your thermostat down just one degree each night results in a 2% reduction on your annual heating bill.

Choosing a Fuel Type for your Furnace – Propane vs. Natural Gas vs. Oil

When choosing a fuel type for your furnace the two major options for Canadians are: natural gas or propane. The biggest factor that must be taken into consideration when deciding between a natural gas or propane furnace is whether you live in an urban or rural area.  Your location will dictate which energy source is more appropriate for your furnace.  Most urban city centers are equipped with natural gas pipelines making it the obvious choice.

In rural settings natural gas pipeline infrastructure is not as readily available or may not be installed, which makes propane the most cost-effective energy source over oil and electrical heating. Propane is somewhat less efficient than natural gas but is still a good alternative. One downside is that propane heating requires the installation of a large tank on your property, which is refilled periodically.

Oil is becoming increasingly rare as a heating fuel for homes. Oil furnaces are not energy efficient, with some having an AFUE of only 60% (PDF). That means for every energy dollar only 60 cents is going to heat your home, and the rest is being wasted, making it significantly costlier to heat your home. Not only is money being wasted and energy lost, an oil furnace puts more strain on the environment by burning more fossil fuel, which increases your eco-footprint. This is why so many Canadians are choosing to make the switch away from oil heat.

And with the exception of people living in Quebec who get relatively cheap electricity from Hydro Quebec, homeowners with electric heating in Ontario and elsewhere are increasingly switching to natural gas or propane due to high heating costs.

For more information on conversions from oil or electric to propane or gas, see here.

ENERGY STAR® Furnace Ratings Explained – Is it worth it?

When you see a home heating system with an ENERGY STAR certification in Canada you can rest assured that you are in the presence of an efficient furnace, and high-efficiency means the biggest bang for your energy dollar.

To qualify as an ENERGY STAR home heating system, it has to have 95% AFUE or more, (that means 95 cents of every energy dollar are going to actually heating your home) and fan efficiency of 2% or less. Note, ‘fan efficiency’ refers to the ratio of electrical energy consumption to the total energy consumption of the furnace during heating operation.

ENERGY STAR is administered and promoted in Canada by Natural Resources Canada and registered in Canada with the United States Environmental Protection Agency. ENERGY STAR home heating systems allow you to save money while decreasing environmental emissions which reduces your ecological footprint.  That’s a win for your pocketbook and the environment.

Other Important Considerations

Warranty

Warranty information is brand-specific so the amount of coverage will depend on which model and company you purchase your furnace from. These typically range from 5 year limited parts warranties to 10-year, 20-year or lifetime warranties on key parts like the heat exchanger, and even ‘unit replacement guarantees’.

Warranties that you are entitled to include: manufacturer warranty which includes parts warranty, heat exchanger warranty. Be sure to read the fine print carefully and ensure that you register your warranties so that they are on file. Some warranties, especially ‘whole unit replacement’ ones require annual maintenance and cleaning be done a certified technician.

You may also get additional labour warranty coverage on the installation through your licensed HVAC technician who completes your new home furnace installation, typically for the period of one year, but sometimes longer.

Rebates and Incentives

Different provinces have different rebates and incentives available and these are subject to change at any time. In addition, local organizations like utility companies and municipal governments may also have their own HVAC grant programs.

The Canadian federal government announced in 2021 the creation of a grant program of up to $5,000 in incentives for Canadian homeowners to perform energy-saving home renovations, including upgrading the HVAC system.

For more information on current heating & cooling rebates and incentives in Canada, please see here.

Plus check out our Local Current HVAC Deals page for offers and promotions from local contractors.

Humidifiers and Air Filtration

These add-ons can help filter your home’s air and maintain optimal humidity, making air healthier and easier to breathe. 

Air filtration systems, especially those with HEPA filters, reduce allergens and pollutants and make breathing easier, while also reducing the chance of mould, asthma flair ups, and other skin and respiratory issues. It is important to change your air filter periodically in order to maximize the efficiency of your furnace.

With the COVID-19 pandemic, Canadians are more concerned than ever about indoor air quality and safety.

Zoned Heating

Zoned heating allows you to control the temperature of specific areas of the house, which is a fairly expensive upgrade. It can be beneficial especially with large homes, as it allows you to heat the rooms you use the most, while keeping the others at a lower temperature when you’re not using them.

Most houses are non-zoned = 1 thermostat that controls the heating of the whole house (natural gas furnace or propane furnace). Though individual vents may have manual switches to adjust the air flow for a particular room. Unless you have a system with an ECM motor, you should not close any air vents.

Furnace Sizing & Getting an Estimate

There is a common myth out there that square footage is the only factor required to determine the size and BTU output of a residential home heating system.  Actually, many factors need to be taken into account when determining the appropriate furnace size to heat your home.

Other factors that may be considered during a home assessment include:

• type of insulation used
• amount of insulation
• climate
• windows: size, type, amount, direction they face
• house material – vinyl siding vs. brick
• seals
• air leakage
• vents
• ductwork

One of our local certified HVAC professionals can assess all of these factors in order to provide you with a home heating system that meets your home’s needs. You can request a free quote from local professionals with the form above.

Summary of Key Points

• The minimum efficiency furnace you can purchase in Canada is 92% AFUE
• Top high-efficiency furnaces on the market have AFUE of 95-98%
• The BTU rating needs to be considered when choosing the right size of heating system. Newer furnaces are more efficient so you generally won’t need as high a BTU rating as your old model. Your local expert will help you size your unit correctly.
• In some situations, a heat/loss calculation might need to be conducted by a professional to determine the right furnace for your home
• A high-efficiency furnace uses less energy and lowers your utility bills, helping offset the cost of upgrading
• Lowering the temperature on your programmable thermostat, even by 1 degree Celsius will result in a decrease on your home energy bill.

The only thing left to do is request a free quote from trusted local heating & cooling companies in your area!