When the AC quits in a Florida summer you want a straight answer today. We measure vent temperature, pressures, and airflow, then name the part that's at fault.
Winter Haven
The system had 0.00 lbs of freon.
Read the full jobWinter Haven
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.
Read the full jobHaines City
The technician at our Haines City shop performed an initial assessment and testing on the A/C and shut-off concern.
Read the full jobWinter Haven
The AC system was restored to proper functionality, providing cool air once again.
Read the full jobWinter Haven
The technician found the system had 0.00 lbs of freon when it should have had 0.00 lbs, so the A/C system was empty.
Read the full jobLake Wales
The team topped off the refrigerant to the proper level and recommended driving the vehicle for a couple of weeks before returning for further inspection.
Read the full jobWarm air has three possible homes: refrigerant, electrical, or airflow. The whole job of this visit is finding out which one you're in before anybody spends money, because the work on those three paths has almost nothing in common.
We start with the measurement everything else hangs on: vent temperature against ambient. What counts as good in Central Florida in August isn't what counts as good in January, and a system running well below outside air is telling a different story than one barely beating it. Gauge readings then show how the refrigerant is behaving, whether the charge is short, and whether the pressure pattern points at a restriction instead of a loss.
Next is the electrical side. Does the compressor actually engage, and if it doesn't, is that a failure or a switch correctly refusing to let it run? On a lot of cars that single distinction is the entire diagnosis. A leak detection pass follows when the pressures call for one.
Airflow is the part people forget. Plenty of "the AC is broken" calls turn out to be a blend door stuck on the heat side, a blower that's lost speeds, or a cabin filter that hasn't moved much air in years. Cold refrigerant does nothing for you if it can't reach the vents.
You leave knowing which side of the system is at fault and which specific part, with inspection photos sent to your phone so you can see what we saw. And we get it, in this heat you want it fixed today. That's a good argument for measuring first, not for skipping it.
6 recent jobs across 3 cities by our technicians.
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4.8 (2,061) as of Oct 20264.8 out of 5, from 2,061 Google reviews, as of October 2026
31600 U.S. 27
Mon to Fri, 7:30 AM to 5:30 PM
4.8 (162) as of Oct 20264.8 out of 5, from 162 Google reviews, as of October 2026
101 North Scenic Highway
Mon to Fri, 7:30 AM to 5:30 PM
4.8 (538) as of Oct 20264.8 out of 5, from 538 Google reviews, as of October 2026
323 North Scenic Highway
Mon to Fri, 7:30 AM to 5:30 PM
4.6 (171) as of Oct 20264.6 out of 5, from 171 Google reviews, as of October 2026
435 North Orange Street
Mon to Fri, 7:30 AM to 5:30 PM
4.9 (31) as of Oct 20264.9 out of 5, from 31 Google reviews, as of October 2026
201 North 6th Avenue
Mon to Fri, 7:30 AM to 5:30 PM
4.8 (586) as of Oct 20264.8 out of 5, from 586 Google reviews, as of October 2026
5100 Dundee Road
Mon to Fri, 7:30 AM to 5:30 PM
Our experts diagnose and resolve any issue.
Usually airflow across the condenser: a cooling fan that isn't coming on, or something packed against the condenser face. At speed the road does the fan's job for it.
Almost always a blend door or its actuator rather than refrigerant. Two temperatures at once means the cold is getting made and then misrouted on the way to you.
A blower losing speeds, a plugged cabin filter, or a leak in the case. Nothing wrong on the refrigerant side at all, which is exactly why airflow gets checked before anything expensive gets recommended.
Could be the compressor, could be a switch doing its job because pressure is out of range, could be a signal that never reaches it. Same symptom, three very different repairs, and the engagement check is what sorts them.
Moisture sitting in the evaporator case, usually a drain or airflow problem rather than a cooling problem. Different job from a cooling complaint, so it's worth diagnosing on its own terms.
Having issues with my A/C and came here for the diagnostic for it. Waiting lobby is the best I've ever seen in an auto shop. Pleasant and friendly staff with extraordinary knowledge that is easy to understand without a chemistry set. Did not have the work done which was a personal decision not based on them at all. Also I received 2 roses at the end which was a first and brightened my day!! Ill be coming back for sure with my other vehicles soon.
Florida Sod Ace
Verified Google Review
I've been having problems with my A/C and I needed a place with techs certified in Hybrid vehicles. Google pointed me in their direction and after a brief phone call they assured me that they could handle it. I arrived for my appointment, answered some additional questions and sat in the spacious waiting area (which provided a variety of cold drinks as well as snacks to munch on) while they diagnosed the possible issues. They kept me informed along the way, solved my problem for a very affordable price and set up a follow appointment to make sure things stay fully resolved.
Jason Jeffrey
Verified Google Review
Professionalism from the start, great communication, and quick delivery time. I took my vehicle to Johnny’s Automotive for what I thought was an AC problem, but they quickly found it was actually an overheating issue and an oil leak. Before coming here, I was scammed by Agua Wash and Lube, who falsely claimed my AC was recharged and had a leak. Just two hours later, the same issue came back. Johnny’s team found the freon was low and diagnosed the real problem with honesty and care. This is a credible, veteran-friendly shop that treats locals and visitors with integrity. Highly recommend!
frania zamora
Verified Google Review
We stopped in with my 2021 Jeep Wrangler because my AC wasn’t working. They took it back almost immediately, diagnosed it for $140, and gave us two estimates on what it will cost to repair. We’ve decided to bring it back next week to have the work done by them as they offer a 3 year/ 36k warranty, and the man was very helpful and extremely knowledgeable. I wish we would have taken my husband’s Cadillac there before we ended up trading it in due too to many expensive issues.
Pamela Montini
Verified Google Review
On vacation from the north and didn’t know my ac didn’t work until we arrived in Florida. We had to go to a trustworthy recommended mechanic. I showed up in person on Dec 18th (vacation rush in FL), Mike told me without looking at the car that they would diagnose same day and have car ready for pick up next day. Picked up the car completely fixed 3:00 PM on the 19th along with a very detailed list of recommended repairs and inspections passed with pictures. I’d love to have a Jonny’s in my home state. Obviously I recommend.
Jay Mast
Verified Google Review
I took my car to Johnnys and I’m glad I did. The mechanics here actually took the time out to find out why my car was making a funny noise when my ac is on. They Called and explained everything to in detail. Unlike Firestone said it was my transmission and dual fan assembly that needed to be replaced. I like that I wasn’t taken advantage of by Johnnys and they are priced reasonably. I highly recommend them. 🙌🏽🙌🏽🤞🏽🤞🏽
Alesia Myers
Verified Google Review
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Learn moreCommon questions about our ac diagnosis services.
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.
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.
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.
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.
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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