Furnace installation and replacement in London, Ontario
Furnace installation to keep your home warm
Donaldson Home Services installs and replaces natural gas, propane and electric furnaces for homes in London, Ontario and surrounding communities. Whether you’re replacing an aging furnace or making your home more energy-efficient, we measure your home, recommend the right-sized system and give you a free in-home estimate, with True Care protection available on qualifying systems.
Is it time to replace your furnace?
Most furnaces last 15 to 20 years with proper maintenance. If yours is approaching that age (or showing signs of declining performance), it may be time to consider a replacement. Here are a few common signs:
Not sure whether you need a repair or a replacement? Our experienced team will inspect your current system and recommend the option that’s best for your home, not simply the most expensive one. If replacement makes sense, your in-home estimate is free.
Reach out today!
"*" indicates required fields
Furnace installation. Done right.
A new furnace is one of the biggest investments you’ll make in your home’s comfort. We take the time to properly assess your home, recommend the right-sized system and install it to code, never pushing equipment you don’t need.
Every installation is backed by honest recommendations, quality workmanship and True Care protection on qualifying systems. Explore our other heating services, including furnace repair, furnace maintenance and heat pumps. We install furnaces for homes in London and surrounding communities.
What to expect
Replacing your furnace should be straightforward. Here’s what you can expect from your first conversation to your completed installation.
Step one
Request a free estimate
Call us now, fill out the form, text us, or schedule an appointment online, whatever’s easiest. We’ll ask a few quick questions about your home and current heating setup, then book your free in-home estimate at a time that works for you. Same-week availability in most cases.
Step two
Home assessment
We come to your home, measure your space, and check your ductwork, insulation, and ceiling height. This is how we determine the right size furnace for your home, not a guess over the phone. Every home is different, and we treat it that way.
Step three
Recommend
We walk you through your options clearly: heating options, efficiency ratings, and pricing. No pressure, no upselling: just honest advice so you can make a confident decision about what’s right for your home.
Step four
Install
Our TSSA-licensed gas fitters install your new furnace to code, pull all required permits, and test everything before we leave. We haul away your old unit, clean up after ourselves, and walk you through your new system before we go.
Furnace brands we install
We install high-quality furnaces from trusted manufacturers including Trane, Lennox, Goodman, Continental, and RunTru. Rather than recommending one brand, we’ll help you choose the right system based on your home’s size, comfort needs, energy goals, and budget.
True Care: more than a warranty
Your new furnace is a major investment. On qualifying new furnaces and air conditioners, True Care brings parts and labour coverage, diagnostics, annual maintenance with a new filter and priority service together in one program.
Why homeowners choose Donaldson
Honest advice, expert craftsmanship and a commitment to treating every home like our own, backed by 4.9 stars from 3,000+ Google reviews.
Local and family-owned
We’re not a franchise. Donaldson has been owned and run by Jamie and Anna Donaldson since 2013, and our reputation matters to us personally.
Honest recommendations
We explain every option in plain language and help you choose what’s right for your home and your budget, never simply what’s most expensive.
Upfront pricing
We give you the full price before any work begins, and what you’re quoted is what you pay. No hidden fees or unexpected invoice charges.
True Care protection
True Care brings parts and labour, diagnostics, annual maintenance and priority service together on qualifying new furnaces and air conditioners.
What your neighbours are saying about us
Before you replace your furnace
A new furnace is one of the biggest investments you’ll make in your home’s comfort. Understanding what affects cost, efficiency, and long-term performance can help you make a confident decision. Here are a few things every homeowner should know before replacing their furnace.
Furnace cost in London and surrounding communities
The cost of a new furnace depends on several factors, including your home’s size, the efficiency rating you choose, and any modifications required during installation. Rather than offering one-size-fits-all pricing, we provide free in-home estimates so you know exactly what to expect before any work begins. Financing options are also available to help make your investment more manageable.
Choosing the right furnace
Today’s furnaces offer a range of efficiency levels and comfort features. Single-stage furnaces run either on or off, two-stage furnaces have low and high settings, and modulating furnaces adjust more precisely to the heat your home needs. We’ll help you compare your options, explain the differences in clear, straightforward terms, and recommend a system that fits your home, comfort goals, and budget, never more than you need.
Why proper furnace sizing matters
Bigger isn’t always better. A furnace that’s too small may struggle to keep your home comfortable, while one that’s too large can cycle on and off too frequently, reducing efficiency and shortening its lifespan. That’s why our team measures your home and performs a proper assessment before recommending a system, ensuring the right fit for lasting comfort and performance.
Serving London, Ontario and surrounding areas
Locally based, with technicians across Southwestern Ontario. Don’t see your town? Give us a shout. Chances are we’re nearby.
Schedule a 2-hour arrival window for any home heating, air conditioning, or plumbing service. You’ll receive a text when we’re on the way, plus a photo of your technician so you know exactly who’s coming. Book now and experience service you can trust.
Furnace installation and replacement FAQs
Have more questions? We’ve got the answers.
If your furnace is 15 years or older, needs frequent repairs, struggles to heat your home evenly or keeps pushing your energy bills up, it may be time to consider replacement. Our technicians can inspect your current system and tell you honestly whether a repair still makes sense, and your in-home estimate for a new furnace is free. If a repair is the better call, see our furnace repair service.
The right furnace size depends on more than square footage. Proper sizing considers your home’s layout, insulation, windows, doors, room count and overall heat loss. That’s why we measure your home and check your ductwork during the in-home assessment, instead of guessing over the phone. Your estimate for a new furnace is free: request one through our contact page.
The best furnace depends on your home, budget, and comfort goals. Single-stage, two-stage, and modulating furnaces each offer different levels of comfort and efficiency.
Most furnace installations can be completed in one day, depending on the home, the system being installed and whether any additional work is required. Our TSSA-licensed gas fitters pull the required permits, test everything before they leave, haul away your old unit and walk you through your new system. Before any of that, your in-home estimate is free: request one through our contact page.
Warranty coverage can vary. Some warranties only cover certain parts and may not include labour, and many are only honoured when the equipment is registered and annual maintenance is completed. On qualifying new furnaces and air conditioners, True Care brings parts and labour coverage, diagnostics, annual maintenance with a new filter and priority service together in one program. See what True Care covers.
Yes. In-home estimates for a new furnace are free and no-obligation. We measure your home, check your ductwork and insulation, then walk you through your options, efficiency ratings and pricing with no pressure to upsell. You’ll know exactly what the installation costs before any work begins. Request your free furnace estimate through our contact page.
Not always. In some cases your air conditioner can stay in place, but if both systems are older it may be worth reviewing them together. We can assess both during one visit, and in-home estimates for a new air conditioner are free too. Learn more about AC installation and replacement.
Even a high-quality furnace can underperform if it isn’t installed properly. Correct sizing, setup and installation all affect comfort, efficiency and long-term reliability. Our TSSA-licensed gas fitters install to code, pull all required permits and test the system before they leave. To keep it running well year after year, book annual furnace maintenance.
Helpful resources
Everything you need to make confident decisions about your home.
Need some assistance?
Let’s get started
Reliable home service from a trusted local team: honest advice, upfront pricing, and True Care coverage that keeps us in your corner long after the job is done.
Call (519) 439-4328 or schedule your service online.
