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HVAC and Plumbing Company Serving Palm Beach County, FL

24/7 Call 561-863-4803
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THE FIRST AND LAST NAME IN AIR CONDITIONING

Residential Air Conditioning and Plumber Services Near Palm Beach, FL

Hvac Unit Getting Maintenance

Air Conditioning Repair

In a place like Florida, it’s important to call an HVAC contractor at the first signs of trouble with your air conditioner. For fast, reliable AC repairs, simply call John C. Cassidy for 24/7 service!
John C Cassidy Talking With Client

New AC Installation

As a licensed air conditioning contractor in Florida, our team provides AC replacement & installation services on central air systems, heat pumps, and ductless units. Call for a free quote! 
Technician With Waterheater

Water Heater Repair

When the hot water goes out, you need a plumber fast. Connect with John C. Cassidy when your water heater breaks for comprehensive services on both tank and tankless systems.
Technician Working On Toilet

Plumbing Repairs

We offer a broad range of plumbing repair services, from faucet, shower, and toilet repairs to water leak detection and repair. Our plumbers are also available 24/7 in the event of a plumbing emergency.

Available 24/7 at 561-863-4803

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since-1960-ribbon The Cassidy Way

Excellence In Home Comfort For Over Six Decades

John C. Cassidy Air Conditioning & Plumbing is Palm Beach County’s premier provider of residential and commercial air conditioning and plumbing services. Since we opened our doors in 1960, we have dedicated our time and effort to providing the best comfort services in the area. That tradition continues today in every job we do, from start to finish. 

Our History
Your Satisfaction Guaranteed

We Treat Your Home Like It's Our Own

As a family-owned and operated business., we are 100% committed to delivering quality services at affordable rates. We do not leave until the job is done. Whether you need routine maintenance, a new system installation, or around-the-clock emergency services, our specially-trained technicians will make sure all of your needs are met. It's just the way we work - The Cassidy Way.

Our Customers Say It Best

Read Our Reviews

Sonny Erp
Sonny Erp
13:46 23 Oct 25
Very disappointed to spend to spend $825.00 for service call and charge me to find leak which was not found Is just unjustified. My home was built in 2021 no effort was made to see if unit is covered by warranty .i am very impressed with the integrity of John Cassidy they called me to let me know thay looked into service found out mistake was made they are issuing me a credit against my charge very impressed thanks JohnSonny
Tim McKnight
Tim McKnight
22:55 22 Oct 25
Great service. Came right away and solved the problem for a reasonable price. Wilkens was a true professional.
Marsha Bunge
Marsha Bunge
15:35 22 Oct 25
Mark came within a short time from my call to John C Cassidy Air Conditioning for help when our air conditioner failed to keep running. Our home temperature rose to 83 degrees regardless of being set at 73 degrees. Due to health concerns, this scenario was not only uncomfortable, it was dangerous.. Mark was efficient and thorough and solved the problem. This company gained a thankful and loyal customer last night.Update 10/21/25: Our AC stopped cooling this weekend so I called first thing Monday morning and Christopher came out that afternoon. After doing a few tests,he found that refrigerant was leaking out as fast as it was replaced. We opted to replace the system so Christopher spoke with Bain and he came over and shared brands and cost estimates. Both Christopher and Bain were patient and knowledgeable. Bain completed the paperwork and arranged to have Elizel and Manny install the new system the next morning. They worked quickly, explained what they were doing and how the new system differed from our original equipment. They left everything clean and debris-free inside and outside of our homeAn inspector from the company stopped by to assess the finished project before they left.I am so impressed with the caliber of people associated with this company;If I could give more than five stars to the five men involved, I would do so!
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