Request Your Free Furnace Quote
Tell us about your home and our team will help you explore the right furnace options for your space, comfort needs, and budget.
Why Homeowners Choose Donaldson Home Services
A new furnace is a major investment. The right company helps you choose the right system, size it properly, install it correctly, and support you long after the job is done.
We are here to help homeowners feel taken care of, not overwhelmed.
WE INSTALL THE TOP FURNACE BRANDS
We install trusted furnace brands and help homeowners compare the best option for their home, comfort goals, and budget. The right furnace depends on more than square footage — it needs to be measured properly for the home.
We install trusted furnace brands and help homeowners compare the best option for their home, comfort goals, and budget. To provide an accurate equipment price, your home needs to be measured properly. Factors like floors, rooms, windows, doors, venting, and other details all affect the right furnace size for your space.
Tip: Be cautious of any company offering a furnace price over the phone based only on square footage. Every home should be measured to determine the right furnace size. A furnace that is too large can short cycle and reduce comfort, while a furnace that is too small can run too often and wear out faster.
For genuine, professional furnace installation, trust Donaldson Home Services.
The Right Size Matters
A furnace should be sized for the home, not guessed based on square footage alone. If the system is too small, it may struggle to keep your home comfortable and run longer than necessary. If it is too large, it can cycle on and off too often, reduce efficiency, and create uneven heating throughout the home.
Proper sizing takes into account more than just the size of the house. Layout, insulation, windows, doors, venting, ceiling height, and overall heat loss all play a role in choosing the right system. That is why our Home Comfort Advisors take the time to assess the home properly before making a recommendation.
The result is a furnace that is better matched to your space, your comfort needs, and your long-term performance goals.
Built for Long-Term Peace of Mind
Many standard furnace warranties only cover select internal parts and may not include labour or ongoing support after installation. Donaldson’s True Care protection is designed to give homeowners stronger long-term coverage and added peace of mind.
With added protection and continued support, homeowners can feel more confident that their furnace investment is backed beyond installation day.
Parts Coverage
Coverage for qualifying furnace components.
Labour Coverage
Added labour protection for greater confidence.
Annual Maintenance Support
Continued care to help protect system performance.
Priority Booking
Preferred scheduling when service is needed.
Ask our team which systems qualify for True Care protection and what coverage options are available for your home.
how it works
We keep the process simple, so you always know what comes next.
request a quote
Tell us about your home and current heating setup.
Assess
We measure the home and review the right furnace options.
Recommend
We explain pricing, equipment choices, and warranty coverage.
Job Done Right
Your new furnace is installed with care and attention to code.
Peace of Mind
Stay comfortable with a properly installed system and trusted support after the job.
We are here to help homeowners feel taken care of, not overwhelmed.
Before You Buy a Furnace
A better furnace decision starts with proper guidance, proper sizing, and a team you can trust.
furnace type
proper sizing
warranty
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.
Furnace Installation FAQs
If your furnace is older, needs frequent repairs, struggles to heat the home evenly, or is no longer running efficiently, it may be time to consider replacement.
The right furnace size depends on more than square footage. Proper sizing should account for the layout of the home, insulation, windows, doors, venting, and overall heat loss.
The best furnace depends on your home, comfort goals, and budget. Single-stage, two-stage, and modulating furnaces each offer different levels of performance and efficiency.
A furnace that is too small may struggle to heat the home properly, while a furnace that is too large can cycle too often and reduce comfort. Proper sizing helps support better performance and longer system life.
Warranty coverage can vary. Some warranties only cover select parts and may not include labour, so it is important to understand exactly what is included.
Most furnace installations can be completed in one day, depending on the home and whether additional work is needed.
Yes. A quote helps you understand your options, pricing, and which furnace may be the best fit for your home.
Not always. In some cases, your current air conditioner may still be fine, but if both systems are older, it may be worth reviewing them together.
Donaldson provides professional installation, proper sizing, trusted equipment options, and long-term support to help homeowners feel confident in their investment.
Need a New Furnace?
Book a free quote and let our team help you choose the right furnace for your home. We’ll assess the space, explain your options clearly, and recommend a system that fits your comfort, efficiency, and budget goals.