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Auto AC & Heating Shops in Sarnia, ON

Find trusted auto ac & heating services in Sarnia. Compare prices, read reviews, and book online.

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MN Mechanical
Sarnia • ≈ 7 km
MN
MN Mechanical
1323 Lougar Ave, Sarnia, ON N7S 5N7, Canada, Sarnia
★ 5.0
79 Google reviews
Response ≈ 32 min • $$$ • Quotes free
Auto AC & Heating Auto MechanicBrake Services
📞 (519) 383-9922 • Free quote • Verified
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Tony's Diesel & Electric
Sarnia • ≈ 6 km
TO
Tony's Diesel & Electric
5926 Brigden Rd, Sarnia, ON N7T 7H2, Canada, Sarnia
★ 5.0
12 Google reviews
Response ≈ 16 min • $$$ • Quotes free
Auto AC & Heating Auto ElectricalFuel System
📞 (519) 542-7095 • Free quote • Verified
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Best Automotive
Sarnia • ≈ 9 km
BE
Best Automotive
100 Russell St S, Sarnia, ON N7T 1C5, Canada, Sarnia
★ 4.9
89 Google reviews
Response ≈ 20 min • $ • Quotes free
Auto AC & Heating Auto MechanicBrake Services
📞 (519) 344-4588 • Free quote • Verified
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Brothers Auto care
Sarnia • ≈ 8 km
BR
Brothers Auto care
1444 Plank Rd, Sarnia, ON N7W 1A7, Canada, Sarnia
★ 4.9
84 Google reviews
Response ≈ 39 min • $ • Quotes free
Auto AC & Heating Auto MechanicBrake Services
📞 (548) 888-8491 • Free quote • Verified
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Mini_auto
Sarnia • ≈ 7 km
MI
Mini_auto
111 Campbell St, Sarnia, ON N7T 2G5, Canada, Sarnia
★ 4.8
6 Google reviews
Response ≈ 28 min • $$$ • Quotes free
Auto AC & Heating Auto MechanicTransmission
📞 (519) 466-6445 • Free quote • Verified
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Mr. Lube + Tires
Sarnia • ≈ 6 km
MR
Mr. Lube + Tires
1151 London Rd, Sarnia, ON N7S 1P3, Canada, Sarnia
★ 4.8
734 Google reviews
Response ≈ 21 min • $$ • Quotes free
Auto AC & Heating Tires & WheelsOil Change & Lube
📞 (519) 383-0606 • Free quote • Verified
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Speedy Auto Service Sarnia
Sarnia • ≈ 5 km
SP
Speedy Auto Service Sarnia
888 Confederation St, Sarnia, ON N7T 2E5, Canada, Sarnia
★ 4.8
160 Google reviews
Response ≈ 35 min • $ • Quotes free
Auto AC & Heating Brake ServicesExhaust System
📞 (519) 491-6408 • Free quote • Verified
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Econo Automotive Repair Inc
Sarnia • ≈ 10 km
EC
Econo Automotive Repair Inc
795 Campbell St, Sarnia, ON N7T 7T3, Canada, Sarnia
★ 4.7
108 Google reviews
Response ≈ 19 min • $ • Quotes free
Auto AC & Heating Auto MechanicBrake Services
📞 (519) 336-0950 • Free quote • Verified
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LaSalle Auto Centre
Sarnia • ≈ 6 km
LA
LaSalle Auto Centre
214 LaSalle Line, Sarnia, ON N7T 7Y5, Canada, Sarnia
★ 4.7
464 Google reviews
Response ≈ 19 min • $ • Quotes free
Auto AC & Heating Auto MechanicEngine Repair
📞 (519) 337-7533 • Free quote • Verified
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The Mufflerman
Sarnia • ≈ 10 km
TH
The Mufflerman
759 Exmouth St, Sarnia, ON N7T 5P7, Canada, Sarnia
★ 4.7
392 Google reviews
Response ≈ 30 min • $$$ • Quotes free
Auto AC & Heating Brake ServicesTransmission
📞 (519) 336-3295 • Free quote • Verified
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H&I Service Centre Ltd.
Sarnia • ≈ 3 km
H&
H&I Service Centre Ltd.
314 Ontario St, Sarnia, ON N7T 1L9, Canada, Sarnia
★ 4.4
129 Google reviews
Response ≈ 20 min • $$$ • Quotes free
Auto AC & Heating Engine RepairSuspension & Steering
📞 (519) 344-4845 • Free quote • Verified
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Princess Auto
Sarnia • ≈ 8 km
PR
Princess Auto
1370 Quinn Dr, Sarnia, ON N7S 6M8, Canada, Sarnia
★ 4.4
190 Google reviews
Response ≈ 49 min • $$$ • Quotes free
Auto AC & Heating Auto ElectricalSuspension & Steering
📞 (519) 542-1661 • Free quote • Verified
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Abram
Sarnia • ≈ 7 km
AB
Abram
1606 London Line, Sarnia, ON N7W 1A8, Canada, Sarnia
★ 4.1
50 Google reviews
Response ≈ 26 min • $$ • Quotes free
Auto AC & Heating Auto Cooling SystemAuto Mechanic
📞 (519) 542-3475 • Free quote • Verified
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After Hours Automotive
Sarnia • ≈ 8 km
AF
After Hours Automotive
169 Ontario St, Sarnia, ON N7T 1L2, Canada, Sarnia
★ 4.0
80 Google reviews
Response ≈ 27 min • $ • Quotes free
Auto AC & Heating Auto MechanicEuropean & Speciality Cars
📞 (519) 331-4215 • Free quote • Verified
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Verified Reviews for Auto AC & Heating
★ ★ ★ ★ ★

“New to area. Referred by family.
We were very impressed by the thorough inspection of our automobiles with a detailed report and plan for annual and seasonal service and repairs. Video before and after of all parts and services recommended direct to our email for review. Appreciated the complete review (photos of all parts before and after) and time spent at car pick up to show all repairs done. Thanks Natasha for your kind attention and better than quote invoice!!!”

Richard Weima • Auto AC & Heating at LaSalle Auto Centre, Sarnia
★ ★ ★ ★ ★

“As far as service goes: Knowledgeable, quick, polite, fair price.

Yet another quick and painless visit. Definitely recommend this place.”

Grant Richard • Auto AC & Heating at H&I Service Centre Ltd., Sarnia
★ ★ ★ ★ ★

“I had a great experience at Mr. Lube! The staff were friendly, kind, and very professional. They got my oil change done quickly, and I even received a free car wash, which was a nice bonus. Excellent service I’ll definitely be back!”

Clayton Campbell • Auto AC & Heating at Mr. Lube + Tires, Sarnia
★ ★ ★ ★ ★

“Service call was on time, efficient, informative and very helpful. I would definitely recommend!”

Shelley Archer • Auto AC & Heating at MN Mechanical, Sarnia
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Find a Best Auto AC & Heating in Sarnia, ON

Don't leave your Auto AC & Heating to chance. Browse 14 trusted mechanics in Sarnia, read authentic customer reviews, and find the right shop for your vehicle today.

Common Causes of AC & Heating Failure

Refrigerant leaks from deteriorated O-rings, hoses, or the condenser
Failed compressor clutch or internally damaged AC compressor
Clogged cabin air filter restricting airflow to the vents
Leaking or plugged heater core causing foggy windows and sweet smell
Broken blend door actuator preventing hot/cold air mixing
Failed blower motor or resistor stopping airflow from the vents entirely

Signs Your Auto AC or Heating System Needs Service

Air conditioning blows warm air instead of cold
Heater blows cold air even after the engine warms up
Weak airflow from the vents even at the highest fan setting
Strange sweet smell inside the cabin indicating a heater core leak
Unusual clicking or grinding noises when adjusting the temperature
Windows fog up excessively and the defroster doesn't clear them

Auto AC & Heating Services Available

AC Recharge & Leak Test

Evacuating, testing for leaks, and recharging refrigerant

AC Compressor Replacement

Installing a new compressor with full system flush

Heater Core Replacement

Dashboard removal and heater core swap

Cabin Air Filter Replacement

Installing a fresh filter for clean cabin airflow

Blend Door Actuator Repair

Replacing the motor that controls hot and cold air mixing

Blower Motor Replacement

Restoring full fan speed and airflow

Auto AC & Heating Tips

Run your AC system for at least 10 minutes per month even in winter to keep the seals lubricated
Replace your cabin air filter every 20,000-25,000 km for optimal airflow and air quality
If your AC stops blowing cold, get a leak test before just adding more refrigerant
A sweet antifreeze smell inside the cabin is a strong indicator of a leaking heater core
After winter, have your AC system inspected before the summer heat arrives
Don't ignore a defroster that doesn't work—it's a serious safety hazard in cold weather

Frequently Asked Questions

How much does an AC recharge cost in Sarnia? +
A basic AC recharge with leak inspection costs $150-$300. If a leak is found and a component needs replacement (condenser, evaporator, or compressor), the total repair can range from $500-$2,000+.
Why does my AC blow cold then warm? +
This is often caused by an intermittent refrigerant leak, a failing compressor clutch, or a blocked expansion valve. A professional leak test and system pressure check can pinpoint the exact cause.
How much does heater core replacement cost? +
Heater core replacement is labor-intensive because the dashboard must be partially or fully removed. Expect to pay $800-$1,800+ depending on your vehicle's complexity.
How often should I recharge my car's AC? +
A properly sealed AC system should not need regular recharging. If it needs refrigerant frequently, there's an active leak that must be repaired first to avoid environmental damage and ongoing costs.

Auto AC & Heating in Nearby Cities

Toronto Ottawa Mississauga Brampton Hamilton London Markham Vaughan

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