Overview
Weak AC or no heat can come from refrigerant leaks, blend doors or cooling system issues.
Refrigerant work requires certified technicians.
How it typically works
- You approve the work. A good shop explains the findings and gets your OK before repairs.
- Old parts can be returned. Ask to see or keep replaced parts if you want proof of the repair.
- Describe the symptoms. Noises, warning lights, smells and when it happens all help a mechanic.
- Expect diagnostics. Most shops inspect or scan the vehicle before quoting a repair.
- Ask for a written estimate. Many states give consumers rights around written estimates and authorization.
What affects the outcome
- Specialty shops exist. Some shops focus on certain brands, transmissions or diesel work.
- Recalls may apply. Check for open recalls, which dealers often fix free.
- Parts choices affect cost. OEM, aftermarket and used parts vary in price and warranty.
- Warranties differ. Ask how long parts and labor are covered.
- Labor rates differ by shop. Hourly rates and book times explain much of the price gap between shops.
Before you send an inquiry
- Mention whether the vehicle has driver-assistance features such as cameras, parking sensors or radar, since repairs near them may require calibration.
- Describe whether the vehicle is drivable, and whether any warning lights, alignment changes or noises appeared after the damage.
- Keep any police or incident report numbers handy.
- Note your preferred timing and whether you need the vehicle back by a certain date.
- Take clear photos of the damage from several angles and distances, in good light, before anything is moved or repaired.
Signs to slow down
- No answer about whether driver-assistance systems will be checked or calibrated after repairs.
- No clear process for supplements when hidden damage is found after disassembly.
- Offers to inflate damage or add unrelated work to an insurance claim.
- Refusal to let you see the damage or the replaced parts.
- Unwillingness to explain whether new, used or aftermarket parts will be used.
What to ask before you commit
- Can I get a written estimate before work begins?
- Will you call me before doing any extra work?
- What warranty do you offer on parts and labor?
- Do you use OEM or aftermarket parts?
- Are your technicians ASE-certified?
- How long will the repair take?
Common questions
- Why is my AC blowing warm?
- Low refrigerant or component failure are common causes.
- Why no heat?
- Coolant or thermostat issues are common.
- Can I bring my own parts?
- Some shops allow it, but they may not warranty the work. Ask first.
Related topics
- Scheduled Maintenance: Oil changes and routine service.
- Check Engine & Diagnostics: Warning lights and diagnostics.
- Brake Repair: Pads, rotors and brake service.
Have a AC & Heating Repair question for your situation? Use the form below to send an inquiry.