Repairs / Climate
Car A/C & Heating Repair in Mississauga
Two seasons, two complaints, one system. No cold in July and no heat in February share a lot of the same components — and both get treated with a recharge when what they need is a diagnosis.
No cold air
- Blows cool but not cold — low refrigerant, meaning a leak
- Cold at speed, warm at idle — condenser fan or airflow blockage
- Compressor won’t engage — pressure switch, clutch or an electrical fault
- Noise when A/C is on — compressor bearing or clutch
- Musty smell — evaporator needs treating and a new cabin filter
No heat
- Lukewarm at all settings — thermostat stuck open
- Hot on one side, cold on the other — blend door actuator
- No airflow at all — blower motor or resistor
- Windows fog and won’t clear, sweet smell — heater core leaking
- Heat comes and goes — air trapped in the cooling system
Price
What it costs
| Job | Price |
|---|---|
| A/C performance test with vent temperatures and pressures | $149 |
| Nitrogen and UV dye leak detection | $185 |
| Evacuate and recharge, R-134a | from $220 |
| Evacuate and recharge, R-1234yf | from $395 |
| Compressor replacement | quoted |
| Condenser replacement | from $690 |
| Blower motor or resistor | from $290 |
| Blend door actuator | from $310 |
| Cabin air filter | from $65 |
| Evaporator cleaning and deodorising | $120 |
We don’t do “just top it up”. Refrigerant isn’t consumed — it lives in a sealed loop. If the system is empty, it leaked, and recharging without finding out where means selling you the same job every summer. We’ll find the leak first and quote both together.
Questions
Climate control, honestly
Why does my A/C fail every summer?
Because there’s a leak and nobody has looked for it. A properly sealed system holds its charge for years.
No heat, but the temperature gauge is normal. Why?
Usually a stuck blend door actuator, a partly blocked heater core or air in the cooling system. A thermostat stuck open gives lukewarm heat plus a low gauge reading.
Are DIY recharge cans a bad idea?
Usually. They overcharge easily, and the sealant in many of them contaminates recovery equipment and blocks the expansion valve — turning a hose repair into a full system flush. Shops charge more afterwards for exactly that reason.
Should I run the A/C in winter?
Yes, briefly, once a month. It circulates oil through the compressor seals and stops them drying out. It’s also what your defrost setting does automatically on most cars.