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Johnny's AutomotiveJohnny's Automotive
Winter Haven, FL

AC Diagnosis at our Winter Haven shop

Bring it to our Winter Haven shop and we'll handle the ac diagnosis. Here's where to find us, when we're open, and how to book a time.

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Winter Haven, FL5100 Dundee RoadBook a time online
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Where to find our Winter Haven shop

Address, hours, and directions for the shop that handles your ac diagnosis.

Address

5100 Dundee Road
Winter Haven, FL 33884

Shop phone

(863) 949-2995

Hours

Monday
7:30 AM to 5:30 PM
Tuesday
7:30 AM to 5:30 PM
Wednesday
7:30 AM to 5:30 PM
Thursday
7:30 AM to 5:30 PM
Friday
7:30 AM to 5:30 PM
Saturday
Closed
Sunday
Closed

Recent AC Diagnosis Work in Winter Haven

Real jobs completed by our team in the Winter Haven area

Our team

Our Team

September 2026

Why Is My Car's AC Losing Coolness Over Time?

What the customer reported

The vehicle's air conditioning was blowing cool air initially but would gradually become warm over time.

What we found and did

The technician found that the AC system had no refrigerant, which indicated a potential leak. The team at our Winter Haven shop evacuated the AC system to remove any contaminants and recharged it with the correct amount of R134A refrigerant. They also added a UV dye to help detect any future leaks. The system was then tested for leaks, and the customer was advised to return if the issue persisted.

Result

The air conditioning system was restored to proper function, providing consistent cool air.

Pro Tip

If your AC starts blowing warm air again, it could indicate a refrigerant leak. Adding UV dye during a recharge helps pinpoint leaks quickly in follow-up visits.

Our team

Our Team

September 2026

Why Is My Car's AC System Leaking?

What the customer reported

The vehicle owner was informed by another shop that they needed an evaporator core replacement and sought a second opinion.

What we found and did

The technician performed an initial assessment to check for any dye or leaks in the AC system. The team at our Winter Haven shop conducted an initial assessment of the vehicle's AC system at no charge, updating the service manager within 30 minutes. Further testing was recommended to provide a complete diagnosis.

Pro Tip

AC systems with suspected leaks should be checked for dye to identify the source. If you notice a drop in cooling efficiency, get it inspected early to avoid more costly repairs.

Our team

Our Team

September 2026

Why Is My AC Blowing Hot Air?

What the customer reported

The vehicle's air conditioning was not working, causing discomfort during drives.

What we found and did

The technician found that the AC system was completely devoid of refrigerant, which is essential for cooling. The team at our Winter Haven shop performed an AC service, which included connecting AC equipment, evacuating contaminants, and recharging the system with the proper amount of refrigerant and oil. They also added a UV dye to help detect any potential leaks in the future.

Result

The AC system was restored to proper functionality, providing cool air once again.

Pro Tip

If your AC starts blowing warm air again, it might indicate a leak. Returning for a UV dye inspection can pinpoint the issue before it worsens.

Our team

Our Team

August 2026

Why Is My Car's AC Blowing Warm Air?

What the customer reported

The vehicle owner experienced warm air blowing from the car's air conditioning system.

What we found and did

The technician found that the AC system had 0.00 lbs of refrigerant, indicating a complete lack of freon. The team evacuated and recharged the R134A air conditioning system, ensuring the correct refrigerant and oil levels were restored. They performed a leak test and added a UV dye to help identify any potential leaks in the future.

Result

The AC system was restored to proper function, providing cool air once again.

Pro Tip

If your AC starts blowing warm air again, return to the shop quickly. The added UV dye helps locate leaks easily, preventing more expensive repairs later.

FAQ

AC Diagnosis in Winter Haven: questions answered

Answered by our licensed technicians serving Winter Haven.

How fast can you tell me what's wrong?

Most AC diagnostics are a same-visit answer, since vent temperature, pressures, compressor engagement, and airflow all get checked in one sitting. The thing that takes longer is a leak small enough that it needs time to reveal itself. We'll tell you which of those you have before you head out.

Is it worth diagnosing if it still cools a little?

Yes, and that's the easier version of this problem. A system that's partly working still gives readings we can interpret, and it usually has a smaller repair in front of it than one that's completely dead. Waiting until it quits entirely rarely makes the job cheaper.

Should I run the AC on the way in?

If you can, yes. Drive it the way you normally would with the AC on so the system arrives in the state you're complaining about. A car that shows up cold and switched off takes longer to read, and a warm running system is closer to real conditions anyway.

What does the write-up actually tell me?

Which side of the system is at fault, refrigerant, electrical, or airflow, then the specific part and the measurements behind that call, with photos of what we found. If more than one thing is wrong, you'll see them listed separately instead of lumped into one number.

My car has a lot of miles on it. Still worth diagnosing?

Usually, because the answer often isn't the expensive part. Blend doors, blowers, fans, switches, and connections account for a fair share of warm-air complaints on older vehicles. You won't know which one you've got until somebody measures it.

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ASE Certified Technicians

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Flexible Drop-Off Hours

Convenient service options

20+ Years

2 decades of trusted service