Professional Furnace Installation Service
Serving London, Ontario and nearby areas with professional furnace installation, heat pumps, and central heating solutions backed by London’s only 15-year warranty.
Donaldson is a trusted home heating company with over 2,000 5-star reviews. We go beyond the equipment — we install it with True Care.
what we do
RESIDENTIAL HVAC
Certified gas fitters
Central Heating Install
Top Furnace Brands
Honest Quotes
15-Year Warranty
Do Furnace True Care with Donaldson
When the cold Ontario winter sets in, you need a furnace you can count on. At Donaldson Home Services, we specialize in professional furnace installation that helps keep your home warm, comfortable, and energy efficient. Whether you’re replacing an older system or installing a new one, our certified technicians make the process simple — all with London’s only 15-year warranty for added peace of mind.
What is True Care?
A 15-year furnace warranty package that comes with:
- 15 years of parts coverage on inside and outside furnace components
- 15 years of labour coverage
- 15 free furnace maintenances
- 15 free furnace filters
- Priority booking
On select modulating furnaces.
We even contact you to book your annual maintenance, so you have less to worry about. True Care is designed to make furnace ownership easier for 15 years.
Warranty Note
Many manufacturer warranties are only honoured when the product is registered and annual maintenance is completed. With Donaldson’s True Care package, we help take care of those important details for you.
heating systems we replace
If your current heating system is old, inefficient, or no longer keeping your home comfortable, we can replace it with a high-efficiency unit designed to save money and last for years.
Natural Gas & Propane Furnaces
Forced Air Furnaces
Electric Furnaces
Heat Pumps
WE INSTALL THE TOP FURNACE AND AIR CONDITIONER BRANDS
At Donaldson Home Services, we only install reliable, top-performing furnace and air conditioner brands that meet our standards for quality and efficiency.
To obtain an accurate equipment price you will need your home’s size measured for it’s heating and cooling load. This includes: floors, rooms, windows, doors, venting, and other details.
TIP: Be weary of any company promising you a ‘good’ furnace price over the phone based only on square footage. All homes must be measured to see what furnace size fits. A furnace that is too big will actually heat your home less, and a too small furnace will over-run and have a shorter life span.Â
For genuine and professional furnace installs
Why Homeowners Choose Donaldson Home Services
- We inspect and measure the home for accurately sized heating equipment
- Furnaces are properly installed up to code
- Repair and maintenance aftercare for new furnaces
- Repair Guarantee
- Industry-leading warranties up to a 15-year extended furnace warranty
- 2-hour arrival windows
- Bonus: check out our latest promotions
Benefits of a New Furnace
Upgrading your furnace can bring lasting comfort and savings:
- Consistent heat throughout your home
- Lower energy bills with modern high-efficiency models
- Quieter performance for a more comfortable living space
- Improved air quality with cleaner, more efficient systems
- Increased home value with a new, reliable furnace
OUR SERVICE AREAS
Serving London, St. Thomas, Strathroy, Lucan, Aylmer, Woodstock, Dutton, Tillsonburg, Exeter and everywhere inbetween.
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.
What to Know First
3 Things to Consider Before Getting a New Furnace
What type of furnace are you getting, and how will it affect efficiency?
Having the proper type and size of furnace helps support maximum efficiency and longer system life. Single-stage furnaces operate with an on or off setting, while two-stage furnaces offer low and high settings. A modulating furnace adjusts more precisely based on the temperature your home needs. In general, the more stages available, the more efficient the furnace can be.
How do you know what size furnace you need?
If the furnace is too small, you may notice cold spots in the home and the system may work harder to maintain the temperature, which can lead to faster wear on parts. If the furnace is too large, it may overheat, cycle on and off too often, and create comfort issues in the home. The proper way to size a furnace or air conditioner is to measure the home and complete a heat loss and heat gain analysis. This includes windows, doors, insulation, room count, layout, and more.
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Our Size Guarantee requires our Home Comfort Advisors to visit the home and take proper measurements.
What does the warranty actually cover?
Most 10-year warranties only cover certain internal parts and often do not include labour. Some are only valid if the equipment is registered, are not transferable, and may become void if annual maintenance is missed. The value of any warranty also depends on how reliable the installation company is, so it is important to choose a company you can count on.
Furnace Installation FAQs
If your furnace is older, needs frequent repairs, struggles to heat the home evenly, or causes your energy bills to rise, it may be time to consider replacement.
The right furnace size depends on more than square footage. Proper sizing should consider the layout of the home, insulation, windows, doors, room count, and overall heat loss.
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.
Warranty coverage can vary. Some warranties only cover certain parts and may not include labour. Coverage may also depend on registration and annual maintenance requirements.
Yes. A quote helps you understand your options, pricing, and which furnace is the best fit for your home.
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Not always. In some cases, your air conditioner can remain in place, but if both systems are older, it may be worth reviewing them together.
Even a high-quality furnace can underperform if it is not installed properly. Correct sizing, setup, and installation all affect comfort, efficiency, and long-term reliability.
get started today
Don’t wait until your old furnace leaves you in the cold. Get reliable, professional installation from a trusted local team.