Quick answer
A standalone air conditioner tune-up in the Burlington, Oakville and Hamilton area costs $120–$250 and takes 45 to 90 minutes. A maintenance plan that bundles the spring AC visit with a fall furnace tune-up typically runs $150–$350 a year and adds priority scheduling. Refrigerant is not part of maintenance: a system that needs gas has a leak, and finding and fixing it is a separate repair.
How much AC maintenance costs comes down to what the visit actually includes, and that varies more than the price does. A proper spring tune-up in the GTA and Hamilton runs $120–$250; that price should buy an hour or so of a licensed technician measuring things, not a 10-minute look and a sales pitch. Below is what the money covers, what it does not, and when a plan beats paying per visit.
What a $120–$250 AC tune-up should include
- Run capacitor tested and compared to its rated microfarads — a capacitor a few percent out of tolerance is the most common cause of a mid-July failure.
- Contactor inspected for pitting, and compressor and fan amp draw checked against the nameplate.
- Outdoor coil rinsed clean of seed fluff, grass and lint; on the tree-heavy streets of Tyandaga and Aldershot the coil can be half-blocked by June.
- Refrigerant pressures and temperatures checked with gauges to confirm the charge — a check, not a top-up.
- Temperature split across the indoor coil measured at the registers, and the evaporator coil inspected for frost or dirt.
- Condensate drain flushed and the trap or float switch checked; humid lakeshore summers grow algae in drain lines quickly.
- Filter, blower wheel, thermostat operation and the disconnect and wiring at the outdoor unit inspected.
Anything on that list that is skipped is where the price was cut. If the quote is well under $120, ask what the technician measures; the $99-style specials that circulate each spring usually cover a coil rinse and a filter, and are often structured to lead to a repair recommendation on the spot.
What maintenance does not include
Repairs and refrigerant are separate. If the tune-up finds a weak capacitor, replacing it is a $150–$350 repair on top of the visit, and a system that is low on charge has a leak somewhere — a refrigerant recharge without a leak repair is money that evaporates by next summer. A heavy chemical cleaning of a badly fouled evaporator coil is usually quoted separately too, because it can take longer than the tune-up itself. A diagnostic visit for a system that is already broken is a different call, priced at $90–$150 and credited toward the repair.
Maintenance plan vs. paying per visit
A plan that covers the spring AC tune-up and the fall furnace tune-up costs $150–$350 a year — roughly $240–$500 of standalone value — and adds the thing that matters most in a heat wave: priority scheduling ahead of the call-in queue. Plans also keep a service record, which some manufacturers ask for before honouring a parts claim on a unit under warranty. If you would only ever book the AC visit and skip the furnace, paying per visit is cheaper; if you want both and you want the first appointment in a hot week, the plan wins. Our answer on whether maintenance plans are worth it has the full comparison.
How to keep the bill at the low end
- Book in April or early May. Once the first 30°C day arrives, the calendar fills with no-cool calls and tune-ups get pushed.
- Do the free part yourself: change the filter, keep 60 cm clear around the condenser, and rinse the coil gently from the inside out with the power off.
- Do not open the refrigerant circuit or add store-bought recharge cans — that needs an ODP-certified technician, and it masks the leak.
- Have the AC and furnace done on one visit where possible; the blower, filter and drain are shared components.
- Once a year is enough for most homes; see how often an air conditioner should be serviced.
Quick answers to related questions
- Is AC maintenance worth it on an old unit? Yes, and arguably more so: a clean coil and a good capacitor are what keep a 12-year-old compressor alive.
- Does a tune-up include refrigerant? No. A charge check is included; adding refrigerant means there is a leak, and that is a repair.
- How long does an AC tune-up take? Expect 45 to 90 minutes depending on how dirty the coil is and whether the furnace is done at the same time. Related cost questions live in our answers library.
ZK Mechanical's maintenance plans cover both tune-ups with priority scheduling and no surcharge for evening or weekend calls, across Burlington, Oakville, Hamilton and the GTA. Book a spring tune-up or call (647) 801-1252 and we will quote the visit before we come.