How Long Does It Take to Install a Furnace in Toronto?
- Angela Liddon
- May 14
- 6 min read
If you're a homeowner in Toronto thinking about installing a new furnace, one of the first things that comes to mind is, "How long is this going to take?" Whether you're upgrading from an older system or starting from scratch, knowing what to expect can make the whole process feel less overwhelming.
Let me break it down for you. I’m part of HVAC Group, and we’ve handled hundreds of furnace installations across the GTA. We know the ins and outs of local homes, weather conditions, and building codes in Toronto. So let's get you the answers you need—quick, clear, and straight to the point.
What’s the Average Time to Install a Furnace?
On average, a standard furnace installation in Toronto takes between 4 to 10 hours. That said, several variables can shorten or extend the timeline. If everything is straightforward—think a furnace replacement with existing ductwork and no complications—we’re often done in a single day.
Furnace Replacement Timeline:
Straight swap (same size, compatible ductwork): 4 to 6 hours
Upgrading to a high-efficiency model: 6 to 8 hours
Major modifications required: Up to 10 hours
For brand-new installs where there’s no existing furnace, expect a full-day project or more, especially if ductwork and venting need to be added. Older Toronto homes sometimes have non-standard layouts or outdated heating systems, which may require custom adjustments.
If your home needs asbestos removal or structural reinforcements for safety, that could stretch the job over two days or more. We always evaluate in advance to give you a clear, upfront estimate of both time and cost.
What Factors Affect Furnace Installation Time?
Let’s get into what can affect the clock:
1. Type of Furnace
Gas furnaces, electric models, and high-efficiency units all come with different setup requirements. For example, high-efficiency gas furnaces often need special venting and drainage setups to comply with Ontario's efficiency codes. Two-stage and modulating furnaces take longer to calibrate properly.
2. Existing Ductwork
If your ductwork is compatible and in good shape, it’s a huge time-saver. But if there are leaks, corrosion, or outdated sizing, you might be looking at extra time for repairs or upgrades. Some older Toronto homes still have ductwork from decades ago that no longer meets airflow or insulation standards.
3. Furnace Location
Is your furnace tucked in a cramped crawl space or a spacious basement? The more accessible it is, the quicker we can get in and out. Attic installations or tight utility rooms in Toronto condos add time and effort.
4. Permits & Inspections in Toronto
Installing or replacing a furnace in Toronto requires a permit. Depending on the availability of city inspectors, this could delay or extend the timeline. For example, during peak winter months, inspection wait times can add an extra day to your job. We schedule and manage the inspection so you don’t have to worry about it.
5. Old Unit Removal
Sometimes old units are rusted, awkwardly placed, or connected in a less-than-ideal way. This can add time to dismantling and disposal. Furnace systems that weren’t installed to current standards take extra care and disassembly.
6. Gas Line & Electrical Work
Connecting or upgrading gas lines, or doing electrical rewiring, can add a few hours to the job if those systems aren’t up to code. This is especially true in older Toronto homes that may still have knob-and-tube wiring or outdated breaker panels.
Step-by-Step Furnace Installation Timeline
Here’s how a typical furnace install breaks down:
1. Initial Site Assessment (30-60 mins)
We start by assessing your space, measuring square footage, and confirming load requirements. We consider factors like insulation, windows, ceiling height, and the direction your home faces—especially important in Toronto’s variable climate.
2. Removing the Old Unit (1-2 hours)
Our techs will carefully disconnect and remove the old furnace, making sure nothing is damaged in the process. We dispose of it safely and according to city waste regulations.
3. Preparing the Space (30-90 mins)
This includes cleaning the install area, modifying ductwork if needed, and ensuring a clean, level base. Any extra reinforcements or adjustments needed to match your home’s architecture are done here.
4. Installing the New Furnace (2-4 hours)
This is the main event. We position, secure, and connect your new system to gas, electric, and ductwork. Additional accessories like condensate pumps or inline filters are installed here if needed.
5. Testing and Calibration (1-2 hours)
We check for proper airflow, fuel efficiency, and thermostat accuracy. Everything is calibrated to Toronto’s seasonal needs. This includes carbon monoxide checks, combustion analysis, and system balance testing.
6. Final Inspection (if applicable)
If your job requires a city inspection, we coordinate that and wait for clearance before we leave the site. Once approved, we give you a complete walkthrough of your new system.
Can You Install a Furnace in One Day?
Absolutely. For most standard replacements, we’re in and out within a day. That includes everything—removal, install, cleanup, and basic testing.
But when surprises pop up (think duct issues or unexpected code violations), we may need to extend to the following day. We always let you know upfront if we hit a snag. We also keep emergency furnaces in stock to handle no-heat situations quickly in the dead of Toronto winter.
Why You Should Hire a Certified HVAC Technician in Toronto
Furnace installation isn’t a DIY weekend project. Here’s why calling the pros (like HVAC Group) is a smart move:
1. Local Code Compliance
Toronto’s building regulations change often. We stay on top of them so you don’t have to. We’re fully licensed and insured for all residential HVAC work in Ontario.
2. Permit Assistance
We handle all the paperwork and booking for necessary city inspections. Our office is familiar with the application process for each Toronto district.
3. Safety First
Gas line leaks, carbon monoxide risks, and faulty wiring are all serious concerns if things aren’t done right. We use industry-approved test equipment and conduct full safety audits before leaving.
4. Manufacturer Warranty Protection
Most brands void their warranties if the install wasn’t done by a certified tech. We’re recognized installers for brands like Lennox, Trane, Goodman, and Amana.
5. Better Performance and Efficiency
Our installations are fine-tuned to make sure your furnace runs efficiently, saving you money in the long run. We also register your warranty for you and help you apply for available rebates.
Additional Services You May Need During Furnace Installation
Often, a furnace install goes hand-in-hand with other HVAC upgrades. Here are services we often bundle in:
Smart thermostats help maximize your new furnace's performance. We can integrate these during the same visit, and we’ll train you on how to use them.
- Air Duct Services
Leaky or outdated ducts? Let’s upgrade or reseal them for better airflow and energy savings. Duct cleaning, sealing, and balancing can significantly impact performance.
Dry winter air in Toronto can be brutal. Pair your furnace with a humidifier to protect wood floors, skin, and sinuses. We install both bypass and steam humidifiers.
- Heat Pump Installation
Looking for hybrid heating options? We install energy-efficient heat pumps alongside furnaces. A dual-fuel system can lower your energy bills during shoulder seasons.
- Furnace Maintenance Plans
Protect your investment. Regular maintenance keeps your furnace running smoothly for years to come. We offer affordable annual service packages with reminders and priority booking.
Frequently Asked Questions
How long does it take to install a furnace in a new home?
Usually 1 full day, sometimes 1.5 days depending on layout and ductwork. Pre-planned installs on new builds often go quicker.
Will I be without heat during the installation?
Yes, but only for a few hours. We work quickly and prioritize winter installs. Emergency space heaters are available upon request.
Do I need to be home during the install?
Not necessarily, but we recommend it for walk-throughs and post-install tips. We also take photos and provide a digital report if you’re unavailable.
Can you install on weekends?
Absolutely. We offer weekend installations in Toronto at no extra cost. Early morning and evening appointments also available.
Do I need a permit for furnace replacement?
Yes, and we’ll take care of the paperwork and scheduling for you. Permits protect you and ensure the work is up to code.
Conclusion
If you're ready to upgrade your heating system and want fast, professional service that meets Toronto standards, call HVAC Group today. We provide free consultations and same-day furnace installations across the GTA.
Don’t wait for winter to hit hard—book your furnace installation in Toronto now. Our certified team is ready to keep your home warm, safe, and energy-efficient.
Comments