Certified by John C Cassidy Air Conditioning & Plumbing • Oct 04, 2026
HVAC ContractorPlumber
John C. Cassidy Air Conditioning & Plumbing is a trusted, family-owned HVAC and plumbing company serving Palm Beach County and Martin County, FL since 1960. We provide expert residential and commercial air conditioning repair, AC installation, and plumbing services 24 hours a day, 7 days a week. Our licensed technicians specialize in AC repair, new AC system installation, heat pump service, ductless mini-split systems, indoor air quality solutions, water heater repair, tankless water heaters, leak detection, drain cleaning, and backflow prevention. As an authorized dealer for top brands including Trane, Lennox, Rheem, Daikin, and Mitsubishi Electric, we deliver quality workmanship with upfront pricing and 100% satisfaction guaranteed. Whether you need emergency AC repair in Riviera Beach, plumbing services in Palm Beach Gardens, or a new system installation in Jupiter, our team is ready to help. Call (561) 594-4816 for fast, reliable service from the first and last name in air conditioning.
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Certified by John C Cassidy Air Conditioning & Plumbing • Oct 04, 2026
Certified by John C Cassidy Air Conditioning & Plumbing • Oct 04, 2026
MondayOpen 24 Hours
TuesdayOpen 24 Hours
WednesdayOpen 24 Hours
ThursdayOpen 24 Hours
FridayOpen 24 Hours
SaturdayOpen 24 Hours
SundayOpen 24 Hours
Reviews
4.7
1,625 reviews
5 stars
1,468
4 stars
41
3 stars10
2 stars13
1 star
93
AO
Ana Maria O
3 days ago
5.0
We have been using Cassidy for 6+ years and they never disappoint! Today, technician Koko fixed our garbage disposal and he was not only professional and knowledgeable, but also so helpful and nice. 100% recommend!
SS
Sunshine!
6 days ago
5.0
Amazing experience from start to finish with Cassidy Air Conditioning. The team did an excellent job. They did a very difficult job for us as the air-conditioner air handler was in the attic, which is only 2 to 3 feet high and very hot. They killed it and did a great job.
DD
Denise Delmond
Sep 18, 2026
5.0
We have had such a wonderful experience with John C. Cassidy, and I especially want to recognize our technician, Scott. He has been absolutely fantastic to work with and consistently provides exceptional service every time he comes out.
Scott is professional, knowledgeable, dependable, and always takes the time to thoroughly evaluate what is going on and explain everything clearly. You can tell that he genuinely cares about the quality of his work and about making sure things are done correctly. No matter what issue we have encountered, he has always been responsive, helpful, and a pleasure to work with.
FD
Frank Don
Sep 18, 2026
5.0
Wow, what a great experience. Our A/C stopped last night. I was able to schedule an early morning appointment and Andrew arrived at the scheduled time. He was professional, knowledgeable, and highly competent—- also a nice guy. He resolved the issue, made us aware of what we need to do to keep things up and running, and checked all the various components to make sure that we were good and unlikely to have further problems. Highly recommend Cassidy and Andrew.
PF
Patrick Flynn
Sep 4, 2026
1.0
What a nightmare. NO ACCOUNTABILITY. NO FOLLOW UP. UNRELIABLE WORK. NO CALL BACKS. HIGH PRICES. Do not waste your money. Go with Flamingo or Sailfish- they are both great. But Cassidy is a nightmare: June 25: A/C trouble, I call them. They send out a technician who did some work and left -- the issue was not resolved. I called again same day asking for an update and reporting no improvement-- they send someone else more experienced, who "fixes" the issue -- but only for two weeks. No invoice is received in either case, but I do get a timely money grab suggesting a maintenance agreement. On July 5 I have not received an invoice and call to find out what's going on and they send me the invoices manually. $600 for not fixing the problem the first time. $400 for temporarily fixing it the second time. July 11: the system goes down again, I Call back. They send someone out to tell me I "need a new system" OR it "could be repaired" and they charge $185. I call back and am told that only one department handles new system estimates and that they'll be in touch. 3 calls later I reach someone who says they'll get back to me ASAP. 3 SEPARATE calls later I keep calling to find out what a repair would cost-- but no one can tell me. New systems tells me they are waiting on service/repair to tell them the number while service/repair tells me THEY are waiting on numbers from new system. Meanwhile I get regular calls from their billing department telling me I owe THEM money after already paying $1,000 for a broken system and no returned calls. I also tell EACH representative in EACH call (including their after hours emergency folks who are just an answering service nothing more) that my home is in the computer / database attached to someone else in the same building with the same last name. No wonder I don't get the invoices. Each time I tell them each time they say they'll fix it but they cant right then because they do not have the access to do so. I give up and give my business for a new system to someone else. Then around July 20 long after I get a new system this lady named Kim calls me to say I still owe $185 for being told I need a new system after paying $1,000 for a broken one--and I tell her the full saga, including many details not included here. She says oh my god this is terrible, I will reach out to our service manager (Kevin?) to get a reading and" I promise on my mother's grave I will call you back" -- she never did. My neighbor in the same building who has nothing to do with my account is still getting invoices for $185 and I'm STILL not getting them and still haven't gotten any call back. They are quick to calll you when they want your money (Service agreements, over due invoices you never received) but they do not call you back otherwise. Nightmare.
Frequently Asked Questions About John C Cassidy Air Conditioning & Plumbing
How often should I service my AC?
Professional AC maintenance should be performed twice yearly - before summer and winter seasons. Regular tune-ups prevent breakdowns, improve efficiency, and extend your system's lifespan in Florida's demanding climate.
Why is my AC running but not cooling?
This often indicates dirty filters, low refrigerant, frozen coils, or thermostat issues. Professional diagnosis is essential since multiple components could be involved, requiring different repair approaches.
How quickly can you respond to emergencies?
We provide 24/7 emergency service throughout Palm Beach County with rapid response times. Our experienced technicians carry fully stocked trucks to handle most repairs on the first visit.
When should I replace my water heater?
Most water heaters last 8-12 years. Replace yours if you notice rusty water, strange noises, frequent repairs, or inconsistent temperatures. Tankless units offer longer lifespans and energy savings for Florida homes.
What's included in preventative maintenance?
Comprehensive inspections cover electrical connections, refrigerant levels, filter changes, coil cleaning, and performance testing. Regular maintenance prevents 95% of system failures and maintains manufacturer warranties.
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