AC Repair in Markham
AC not cooling in Markham? Our technicians deliver same-day air conditioner repair with a flat-rate quote and no overtime fees on evenings or weekends. Markham blends established homes in Unionville and Thornhill with newer builds in Cornell and Greensborough, so we service everything from aging systems to high-efficiency equipment.
Markham AC Repair Services
AC not cooling
Diagnosis and repair when your system runs but the home will not cool down.
Refrigerant and leak repair
Licensed leak detection and refrigerant service, including modern R-454B and R-32 systems.
Capacitor and compressor
Testing and replacement of failed capacitors, contactors, and compressor faults.
Fan and blower faults
Repair of outdoor fan motors and indoor blowers causing weak airflow or noise.
Frozen coil and drainage
Clearing frozen evaporator coils and blocked condensate drains that trigger shutoffs.
Thermostat and controls
Diagnosis of thermostat, wiring, and control faults affecting cooling.
Cooling Faults in Unionville and Markham Village Homes
The older housing around Unionville and Markham Village had cooling added long after it was built, and the retrofit shows. Plaster walls left little room for generous ductwork, so returns tend to be few and undersized. That produces a house where the air conditioner runs continuously, the room nearest the air handler is cold and the far bedrooms never really get there.
We measure the temperature split across the coil and the static pressure across the system before touching refrigerant. Those two numbers separate an equipment fault from a distribution limit. If the answer is distribution, we will say so, because a new condenser will not fix a return-air problem and you should not be sold one.
Typical Pricing in Markham
| Service | Price Range |
|---|---|
| Diagnostic and service call | $129 (applied to the repair) |
| Most common AC repairs | $200 to $800 |
| Capacitor replacement | $180 to $400 |
All prices include labour. Flat-rate quotes provided before work begins. No hidden fees.
Serving All Markham Neighbourhoods
EcoFrost provides same-day HVAC service across Markham. From older homes to new builds, our TSSA-certified technicians know local equipment and climate demands.
Frequently Asked Questions about AC Repair in Markham
How fast can you repair my AC in Markham?
Markham is within our core service area, so same-day repair is usually available. We provide the flat-rate quote before we start any work.
What does AC repair cost in Markham?
The diagnostic is $129 and is applied to the repair. Most AC repairs in Markham land between $200 and $800, quoted flat before work begins.
Do you charge overtime for evening or weekend calls?
No. EcoFrost charges $0 overtime fees. Your rate is the same evenings, weekends, and holidays.
Can you service any AC brand?
Yes. Our TSSA-certified technicians service all major central AC brands, including older R-410A systems and current low-GWP refrigerants.
My older Markham home cools unevenly. Is the AC too small?
Sometimes, but in a retrofitted heritage home the more common cause is return air. Cooling needs more airflow than heating does for the same house, and a system with too few returns cannot pull air back from the far rooms no matter how hard the blower works. We measure airflow before recommending equipment, because oversizing a system into a duct restriction makes the symptom worse.
Can you improve it without tearing open plaster walls?
Usually yes, at least partly. Adding a return in a hallway or a stairwell, rebalancing at the trunk, or fitting a variable-speed blower that runs longer at lower speed all help without major disruption. Where a room genuinely cannot be reached, a single ductless head is often cheaper and less invasive than reworking the ductwork.
Will you tell me if the problem is not the air conditioner?
Yes, and it comes up often in the older Markham homes. If the measurements show the equipment is performing to spec and the limitation is the ductwork, we will say so plainly and price the duct work instead. Selling you a condenser that cannot fix a return-air problem would just mean you call us again next summer with the same complaint.
Do you service all Markham neighbourhoods?
Yes. We cover Unionville, Cornell, Berczy Village, Markham Village, Milliken Mills, Thornhill, Cathedraltown, and every Markham community with same-day and emergency service.
Ready to Book? We Serve Markham 24/7
TSSA-certified. $0 overtime fees. Same-day service available across Markham and surrounding areas.
More HVAC help in Markham
Related EcoFrost pages for Markham homeowners.