HVAC Maintenance in Toronto & the GTA — Annual Tune-Up Service
An annual HVAC tune-up is the lowest-cost way to prevent the most expensive calls: a mid-January furnace failure or a mid-July AC breakdown on the hottest day of the year. Direct Air Systems provides professional furnace and air conditioner maintenance across the GTA — Lennox-certified, documented, and warranty-preserving.
Furnace Maintenance — What's Included
Scheduled in fall before heating season. Our furnace tune-up covers:
- Combustion analysis — verify burner efficiency and gas-air mixture is correct for rated AFUE performance
- Heat exchanger inspection — visual and pressure check for cracks that could allow CO into the airstream
- Carbon monoxide testing — measured at supply registers with a calibrated CO analyser
- Flame sensor cleaning — dirty sensors cause random shutoffs and are a leading cause of no-heat calls
- Gas pressure verification — confirm manifold and line pressure to manufacturer specs
- Blower inspection — check motor amperage, belt condition (if applicable), and wheel cleanliness
- Filter check — replacement available on site if required (filter cost extra)
- Written service report — documentation for warranty records and future reference
Air Conditioner Maintenance — What's Included
Scheduled in spring before cooling season. Our AC tune-up covers:
- Refrigerant level check — verify correct charge; low refrigerant reduces efficiency and damages the compressor
- Condenser coil cleaning — dirty condenser coils reduce efficiency by 10–15%
- Electrical inspection — check capacitors, contactors, wiring, and disconnect condition
- Airflow verification — measure supply and return temperatures to confirm correct delta-T
- Thermostat calibration — confirm temperature readings are accurate and staging is correct
- Condensate drain check — confirm drain line is clear to prevent water damage and shutoffs
Why Annual Maintenance Matters for Lennox Warranties
Lennox's 10-year parts warranty — available when equipment is registered within 60 days of installation — requires annual professional maintenance to remain in effect. A skipped year can void coverage on a repair that would otherwise cost $0. Direct Air Systems documents every visit and provides a written service record you can use if a warranty claim is ever needed.
Maintenance for Heat Pumps
Heat pumps require maintenance twice a year — spring for the cooling cycle check, fall for the heating cycle check. Lennox heat pumps we install are eligible for the same warranty-preserving maintenance program. Mitsubishi ductless systems require annual cleaning of indoor air handlers and annual outdoor unit inspection.
GTA Communities We Serve
HVAC maintenance across the full GTA — Toronto, Markham, Bolton, Vaughan, Brampton, Mississauga, Richmond Hill, and Newmarket.
Frequently Asked Questions
How often should I service my furnace in Ontario?
Once a year — ideally in the fall before heating season begins. Annual maintenance catches potential failures before they become mid-winter emergencies, preserves your Lennox warranty (which requires annual professional service on most models), and keeps your furnace running at its rated efficiency.
How much does a furnace tune-up cost in the GTA?
A professional furnace tune-up in the GTA typically costs $150–$250 including tax, depending on the scope of service and any parts required. Direct Air Systems provides upfront pricing before the visit. Ask about annual maintenance agreement pricing for discounted rates across multiple visits.
What is included in an annual furnace tune-up?
Our annual furnace tune-up includes: combustion analysis, heat exchanger inspection for cracks, CO testing at supply registers, gas pressure verification, flame sensor cleaning, filter replacement (filter cost extra if needed), blower inspection, and a full safety check. We document the results and leave you with a written service report.
Does my Lennox warranty require annual maintenance?
Yes. Lennox's 10-year parts warranty (available when equipment is registered within 60 days of installation) requires annual professional maintenance to remain valid. Skipping annual service can void warranty coverage. We document every maintenance visit for your warranty records.
When should I schedule AC maintenance?
Air conditioner maintenance should be scheduled in spring before cooling season — typically April or May in the GTA. Fall is reserved for furnace tune-ups. Scheduling both at the right time of year ensures your equipment is ready for peak demand and avoids emergency calls during the hottest and coldest days.