Furnace Maintenance in Markham
Markham's housing mix runs from 1960s post-war Unionville bungalows through 1990s Cornell townhouses to 2010s Berczy detached family homes. That's a 50-year span of furnace technology in one city. Annual maintenance for any of those vintages does the same job: 60-90 minutes, $149 flat, 12-point inspection, written photo report.
$149 flat rate, 12-point inspection, written photo report. Same price evenings, weekends, and holidays.
Why Markham furnaces benefit from annual maintenance
Older Markham homes (Unionville, parts of Buttonville, the Box Grove area) often have furnaces in tight basement utility rooms with awkward service access. Newer subdivisions (Berczy, Cathedraltown, Greensborough) tend to have larger mechanical rooms and modulating equipment. Both cases benefit equally from a yearly check. What changes is how long the visit takes and whether we need a follow-up for ductwork access.
What we actually check during the visit
The full 12-point inspection. Every checkpoint is something we've seen fail on a Markhamfurnace in the last 12 months. Each gets time and tools, not a verbal “looks good.”
- 1Combustion analysis (CO and CO2 readings at the supply register)
- 2Gas pressure verification (manifold and inlet)
- 3Flame sensor cleaning
- 4Burner inspection and cleaning
- 5Heat exchanger visual inspection
- 6Blower motor amp draw across all speeds
- 7Pressure switch and high-limit safety test
- 8Thermostat calibration verification
- 9Gas valve operating pressure check
- 10Flue and venting inspection
- 11Air filter inspection and standard 1" replacement
- 12Written photo report with findings and a 1-year forecast
Why annual matters (not every other year, not every five)
Four reasons, each one alone enough to make the visit worth booking.
Keeps warranty coverage valid
Manufacturer warranties generally exclude damage caused by lack of maintenance, so annual service records protect a claim. Registering within the manufacturer's window (for example, 60 days for Lennox) is what unlocks the extended 10-year parts warranty. Without service records, a claim on an expensive part like the heat exchanger or inducer motor is harder to prove.
Catches safety issues early
The heat exchanger visual inspection and combustion analysis are the two checks that matter most. A cracked heat exchanger leaks carbon monoxide into the home. Annual inspection catches it before it becomes a hazard.
Protects efficiency, lowers gas bills
A neglected furnace can lose 5-10% efficiency from dirty burners, clogged filters, and worn blower bearings. On a typical Ontario heating bill of $1,800-$3,500 per season, that lost efficiency adds up to roughly the cost of the visit itself.
Extends equipment life
A well-maintained furnace typically lasts 15-20 years. A neglected one often fails between years 10 and 13. Usually from a small problem (a $40 capacitor, a clogged pressure switch hose) that grew into a major failure.
Three ways to pay for Markham furnace maintenance
All three include the same 12-point inspection. The difference is how dispatch and scheduling work.
Single-Visit Tune-Up
- 12-point inspection
- Standard 1" filter included
- Written photo report
- Same flat rate 24/7
Best for homeowners who book maintenance themselves once a year.
Book a single visitComfort Plan
- Annual furnace tune-up (fall)
- Annual AC tune-up (spring)
- 12-point inspection and 1" filter at each visit
- Priority scheduling ahead of non-plan calls
- 15% off all repairs
Best for households with both a furnace and central AC or a heat pump.
See plan detailsPremium Plan
- Everything in Comfort
- Bi-annual inspections, spring and fall
- Filter replacement plus seasonal filter delivery
- Top-of-queue priority scheduling
- 20% off all repairs
Best for households that want every visit, filter and repair discount handled.
See plan detailsIf the visit reveals your furnace is at end of life
For Markham furnaces 15+ years old where the inspection finds significant wear, the maintenance visit doubles as a replace-versus-repair consultation. We run the current-rebate math so you can decide based on numbers, not pressure.
2026 rebate options for Markham homeowners:
- Home Renovation Savings Program (HRS): up to $7,500 ($2,000 for natural-gas homes) for a cold-climate air-source heat pump replacement, or up to $12,000 ($3,000 for natural-gas homes) for ground-source/geothermal. The amount depends on your heating fuel. Replaces the legacy Enbridge HER+ program (closed Dec 31, 2025).
- Income-qualified households:a no-cost heat pump may be available through Save on Energy's Energy Affordability Program for eligible Markham homes heated by electricity or oil.
- Closed federal programs: the Canada Greener Homes Loan (0% up to $40,000) closed to new applications Oct 1, 2025 and in Ontario the Oil-to-Heat-Pump funding now reaches only income-qualified oil homes through Save on Energy. Ask us about standard equipment financing instead.
Markham neighbourhoods we cover
EcoFrost technicians service annual furnace maintenance across every Markham neighbourhood. Drive times from our Mississauga dispatch are typically 20-60 minutes depending on time of day.
Furnace already off?
Skip the tune-up and book a diagnostic. Same Markham response window applies, same flat rate 24/7.
Markham furnace maintenance FAQs
Do most Markham homes really need annual furnace maintenance?
Yes, if you care about warranty coverage or gas-bill stability. Manufacturer warranties generally exclude damage caused by lack of maintenance, so annual service records protect a claim. And a furnace that hasn't been serviced in 3-5 years typically runs 5-10% less efficient than spec, which on a $2,000-$3,500 annual heating bill is $100-$350 you're spending on heat you're not getting.
We're a multi-generational household in Cathedraltown. Higher furnace wear?
Yes, meaningfully. More occupants means longer runtime, more cycling, more wear on the blower motor and inducer. Multi-generation households where the thermostat stays at 22°C around the clock (versus a setback schedule) can put 30-40% more runtime on a furnace per year. We see Markham furnaces in higher-occupancy homes hit end-of-life around year 13-14 versus 17-18 for single-couple households. Annual maintenance still costs $149. But it catches the higher wear earlier.
I have a humidifier and air cleaner attached to the furnace. Are those serviced too?
Yes. The annual visit includes humidifier drain pan flush, humidifier pad change (if owner-supplied), HRV/ERV core inspection (if installed), and air cleaner / EAC cleaning. Filter changes on electronic air cleaners are included; replacement HEPA cartridges if needed are quoted on top of the $149 visit.
Our Markham furnace is making a clicking sound. Should I book a tune-up?
Book a diagnostic instead of a tune-up. Clicking that doesn't lead to ignition usually means a failing hot-surface igniter or gas valve issue. Both are repair items, not maintenance items. Our diagnostic visit identifies the part, quotes the repair, and the diagnostic fee can be applied toward the repair if you proceed.
Does Markham have any local rebates or incentives for furnace tune-ups?
No active local rebate for tune-ups specifically. However, if maintenance reveals the furnace is at end of life, the Home Renovation Savings Program (HRS) pays up to $7,500 (non-gas homes; $2,000 for gas-heated homes) for a cold-climate air-source heat pump replacement, or up to $12,000 for geothermal. We can run the heat-pump-versus-furnace math during the visit.
How do I schedule an annual reminder so I don't forget?
We send all maintenance customers a seasonal reminder email in September. If you're on our annual maintenance plan, we call to book you directly. Either way, the $149 tune-up price is the same whether you remember on your own or we remember for you.
Other HVAC services in Markham
If you live in Markham, here are our other most-booked services in your area. Same TSSA-licensed techs, same flat-rate pricing, same Markham dispatch.
Book your Markham furnace tune-up
September and October are our busiest months. Book early to get your preferred week. Same $149 flat rate whether we visit on a Tuesday morning or a Saturday evening.
EcoFrost Heating · Founded 2015 · 97 Google reviews · 4.9★ rating