Car A/C & Heating Repair in London, ON
When summer hits London, Ontario, you need an air conditioning system that cools fast and stays cold. At City Auto Collision & Mechanical, we keep drivers comfortable year-round with reliable, professional A/C and heating repairs.
If your A/C is blowing warm air, making strange noises, or just not cooling like it used to, our team is here to help. No guesswork. No unnecessary repairs. Just honest diagnostics and long-lasting solutions from a local auto repair shop that puts customers first.
*Turnaround depends on parts availability and workload.
Automotive A/C Repair That Keeps London Drivers Cool
Whether you’re commuting across the city or heading down the 401, your vehicle’s air conditioning system plays a major role in driving comfort. We provide complete A/C repair services for most makes and models, including hybrid and electric vehicles.
Our A/C services include
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Refrigerant leak detection & rechargeFind leaks, recharge safely, and verify performance.
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A/C compressor replacementRepair or replace worn components to restore cold air.
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Condenser & evaporator repairFix airflow, pressure, and cooling problems at the source.
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Electrical & climate control diagnosticsSensors, switches, modules, and control issues.
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Cabin air filter replacementBetter airflow and fewer odors.
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Full system performance testingWe confirm vent temps and system efficiency after service.
We use advanced diagnostic equipment and approved refrigerants to ensure your system runs efficiently and responsibly. Our goal is simple: restore strong, consistent cooling so you can drive comfortably in any heat.
Signs Your Vehicle’s A/C System Needs Service
If you notice any of the following issues, it’s time for an inspection:
- Warm or inconsistent airflowAir isn’t cold or comes and goes.
- Weak air pressure from ventsLow airflow even on high.
- Strange odors when A/C is onMusty or sour smell in the cabin.
- Unusual noises during operationClicking, squealing, or rattling.
- Fluid leaks under the vehicleCould be refrigerant oil or coolant-related.
- HVAC-related warning lightsClimate or engine-related codes.
Our certified technicians perform full system diagnostics and explain everything clearly before any repairs begin. You’ll always know what’s wrong, what it costs, and why it needs fixing.
Want an appointment?
Send a request online and we’ll confirm the next available time.
Heating System Repair for Ontario Winters
When winter temperatures drop in London, a properly working heating system isn’t optional — it’s essential.
We quickly diagnose and repair
- Heater core issuesWeak heat, foggy windows, coolant smell.
- Thermostat failuresTemperature swings and slow warm-up.
- Blower motor problemsFan not working or noisy airflow.
- Coolant system faultsOverheating or no heat in cabin.
- Climate control malfunctionsDigital control / actuator / sensor issues.
We use quality replacement parts designed for durability and performance, so your heater works when you need it most.
Vehicle-Specific HVAC Diagnostics
Every vehicle’s heating and cooling system is different. That’s why we never use a one-size-fits-all approach.
Our technicians stay current with modern climate control systems, including dual-zone systems, digital controls, and advanced hybrid HVAC setups. Whether you drive a newer SUV or an older sedan, we tailor the repair process to your vehicle’s specific system.
Your comfort matters — and we make sure your HVAC system performs like it should.
A/C & Heating FAQ
Quick answers London drivers ask most often.
Why is my car A/C blowing warm air?
Common causes include low refrigerant from a leak, compressor issues, condenser problems, or electrical/climate control faults. We test pressures, check for leaks, and verify performance before recommending repairs.
Do you do A/C recharges in London, Ontario?
Yes. If a recharge is appropriate, we’ll perform the correct service and verify vent temperatures and system pressures. If there’s a leak, we’ll explain the best fix first so it stays cold.
How do I know if my heater core is failing?
Signs can include weak heat, foggy windows, a sweet coolant smell inside the cabin, or coolant loss. We’ll confirm the cause before any work begins.
How long does A/C or heating repair take?
Time depends on what we find and parts availability. Many diagnostic visits and minor repairs can be done the same day, while component replacements may take longer.
Do you work on newer vehicles and advanced HVAC systems?
Yes. We diagnose modern systems including digital climate controls, dual-zone setups, and many hybrid/EV HVAC configurations.
Book A/C & Heating Service
Tell us your symptoms and we’ll confirm the next available time.