Furnace maintenance in London, Ontario
Reliable heat starts with regular care
Donaldson Home Services provides furnace maintenance for homes in London and surrounding communities. Our tune-ups catch potential problems early and keep your heating system ready for the cold months ahead. We service all makes and models, including systems we didn’t install.
Signs it’s time for furnace maintenance
Your furnace doesn’t have to stop working completely to need attention. Changes in heating performance or energy use can be signs that it’s time for professional maintenance.
It may be time to schedule furnace maintenance if:
Even if you haven’t noticed a problem, scheduling furnace maintenance before heating season can help identify developing issues and make sure your system is ready when temperatures drop.
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Furnace maintenance that goes beyond a tune-up
Regular furnace maintenance isn’t just about checking a few boxes. Donaldson takes a thorough approach to help keep your heating system operating safely, reliably, and efficiently throughout the season.
We’ll let you know how your furnace is performing, explain anything we find and recommend only the work your system actually needs. Maintenance is part of our heating services: if a visit turns up a problem, see furnace repair, and when it’s time for something new, see furnace installation. We maintain furnaces for homes in London and surrounding communities.
What to expect
Furnace maintenance should be simple. Here’s what you can expect when you schedule your heating system maintenance with Donaldson.
Step one
Schedule your visit
Book your furnace maintenance at a time that works for you. We’ll arrive ready to give your heating system a thorough inspection and tune-up.
Step two
Inspect & check
Our technician reviews the furnace’s general condition, notes its settings and model number for future service, and checks sensors, filters and drainage for signs of wear or damage.
Step three
Test & maintain
We perform the appropriate maintenance and operational checks to help ensure your furnace is running safely and reliably.
Step four
Review with you
Before we leave, we’ll explain what we found and let you know if anything needs attention. If repairs are recommended, we’ll walk you through your options before any additional work is done.
Why annual furnace maintenance matters
Regular maintenance helps keep your furnace ready for the demands of an Ontario winter. Our technicians thoroughly inspect your system, check its operation, and look for developing issues, helping protect your comfort, your equipment, and your investment.
Membership Plans for every home
Choose how many pieces of equipment you want Donaldson to maintain year-round with our simple 10, 20 & 30 plans. A little care now means fewer surprises later.
Best value
Whole-Home Care
Furnace, AC, water heater, humidifier, HRV & fireplaces
$30
/Month
Furnace + AC Care
Both units covered, 2 maintenance visits per year
$20
/Month
Furnace or AC Care
Coverage & 1 maintenance visit per year for one unit
$10
/Month
Waived Diagnostic Fee
15% repair discount
Priority booking
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
Protecting your furnace between visits
A little care between professional maintenance visits can go a long way. Simple habits like changing your filter, keeping airflow clear, and paying attention to changes in performance can help keep your furnace running reliably throughout the heating season.
Replace your furnace filter regularly
A dirty filter restricts airflow and can make your furnace work harder than necessary. Check your filter regularly and replace it according to the filter manufacturer’s recommendations, especially during periods of heavy use.
Keep vents and returns clear
Furniture, rugs, and other household items can block supply vents or return air grilles and interfere with airflow. Keeping them open and unobstructed helps heated air move properly throughout your home.
Pay attention to changes in performance
You know how your home normally feels. New noises, unusual smells, uneven temperatures, longer heating cycles, or an unexpected increase in energy use can all be reasons to have your furnace checked rather than waiting until your next maintenance visit.
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 maintenance FAQs
Have more questions? We’ve got the answers.
Once a year. Think of it like a vehicle: you wouldn’t skip an oil change, and your furnace shouldn’t skip its maintenance visit. Booking before the heating season gives your technician a chance to deal with potential problems before you rely on your furnace every day. If you’d rather not have to remember, one of our Membership Plans books the visit for you.
A furnace maintenance visit is more than a quick inspection. Your technician will clean the furnace where needed, check its major components and safety controls, test its operation, replace applicable filters, inspect drainage and look for anything that could affect safety, reliability or efficiency, including checking for carbon monoxide.
You may see companies advertise 29-point, 35-point or even longer inspection checklists. We don’t believe the number of boxes matters nearly as much as doing the job properly. Our technicians thoroughly inspect, clean and test your furnace, document its condition and settings, and recommend only the work your system actually needs.
If we find something that needs attention, we’ll explain what we found and your options for repair.
Any time of year works. What matters most is that your furnace is maintained every year, not which month the visit falls in. Our Membership Plans spread visits across the year, so you get a convenient appointment instead of waiting through the fall rush. If it has been more than a year since your last visit, book now, and ask about AC maintenance so both systems stay on schedule.
Regular maintenance can catch developing problems, support reliable operation, reduce unnecessary wear and help make sure your furnace is ready when you need it. Annual professional maintenance may also be required under the terms of some equipment warranties, so check yours before skipping a year. On qualifying new furnaces and air conditioners, True Care includes annual maintenance with a new filter.
A properly maintained furnace can run more efficiently than one affected by neglected maintenance or mechanical issues. Maintenance can’t guarantee a specific drop in your energy bills, but it helps make sure your system is operating as intended. Between visits, replacing your filter and keeping vents clear also help. If your furnace is old and inefficient, compare the cost of a new furnace; in-home estimates for installations are free.
Yes. Our Membership Plans cover a single furnace or several pieces of home comfort equipment, starting at $10 a month for one unit. Depending on the plan, benefits include scheduled maintenance visits, a waived diagnostic fee, a 15% repair discount and priority booking. Compare the options on our Membership Plans page.
Helpful resources
Everything you need to make confident decisions about your home.
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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.
