Fort Lauderdale HVAC & Construction
Cool air, clean work, one accountable crew.
O'Brien handles urgent AC calls, system installs, maintenance, renovations, additions, and build-outs with the same standard: prepared technicians, straight answers, and work that looks finished when we leave.
- 30-minute callback during business hours
- License #CAC1822829 Florida Contractor
- AC + Construction under one roof
Sound familiar? We fix all of it.
- Not cooling
- Weak or no airflow
- Won't turn on
- Won't stay on
- Water leaks or moisture
- Bad smells in vents
- Rising power bills
- Visible ice on the unit
- Thermostat not responding
- Loud or strange noises
HVAC services
Choose the right AC help in seconds.
Fast repair when the system quits, clean installation when it is time to replace, and maintenance that keeps South Florida heat from turning into a breakdown.
AC Repair · Most urgent
Diagnostics that lead to a real fix.
We trace the failure, explain what we found, and get approval before parts or labor begin.
- Not cooling or short cycling
- Leaks, ice, smells, or loud operation
- Electrical, refrigerant, airflow, and drain checks
Installation
System replacement without guesswork.
Correct sizing, clean set-up, tested performance, and a clear walkthrough before we leave.
AC installation
Maintenance
Tune-ups built for Florida runtime.
Drain line, airflow, electrical, refrigerant, and mechanical checks before small issues get expensive.
AC maintenanceNo-cool calls
When the air stops, the plan gets simple.
Hot house, weak airflow, or a system that will not turn on? We prioritize the call, confirm the symptoms, and arrive ready to diagnose the system.
Included with repairs & maintenance plans
The Five-Point System Check
The high-failure areas we look at before small AC problems become expensive ones. When you book a repair or sign up for a maintenance plan, we include the tune-up at no charge.
- Drain Line
- Mechanicals
- Air Flow
- Electricals
- Refrigerant
Every system check focuses on the parts of a South Florida AC system that work the hardest. If follow-up repair or ongoing maintenance is needed, we explain the next step before any work starts.
Construction
Construction services with the same O'Brien Standard.
Renovations, additions, build-outs, and project work are managed with the same discipline as our HVAC calls: clear scope, clean sites, steady communication, and one accountable point of contact.
For homeowners and property managers who want the work coordinated instead of chaotic.
Project Planning
Scope, sequencing, and field coordination before work starts.
Additions
New space planned around the home you already have.
Renovations
Interior improvements, room updates, and larger remodel work.
Build-Outs
Interior build-outs, finish work, and punch-list details.
Our team
The team is the product.
O'Brien is not a one-person brand. It is an owner-led company with technicians and field crews trained around preparation, clean work, and direct communication.
When you call, the goal is simple: understand the problem, show up ready, protect the property, and leave behind work that holds up.
How we work
A clean process beats guesswork.
Listen first
We ask the right questions so the visit starts with context, not confusion.
Diagnose and explain
We inspect the issue, show you what we found, and give you a clear path forward.
Finish clean
We complete the work, check the result, clean the site, and leave you with next steps.
Service area
Fort Lauderdale-based. Focused on South Florida.
Serving Fort Lauderdale and 36+ communities across Broward and Palm Beach counties.
- Fort Lauderdale
- Hollywood
- Pompano Beach
- Pembroke Pines
- Coral Springs
- Plantation
- Davie
- Sunrise
- Weston
- Boca Raton
- Delray Beach
- West Palm Beach
Also: Aventura, Boynton Beach, Coconut Creek, Dania, Deerfield Beach, Hallandale, Highland Beach, Lake Worth, Lauderdale Lakes, Lauderhill, Lighthouse Point, Loxahatchee, Margate, Miramar, North Lauderdale, North Palm Beach, Oakland Park, Palm Beach, Palm Beach Gardens, Parkland, Royal Palm Beach, Tamarac, Wellington, Wilton Manors. All service areas
Good to know
Frequently asked questions
Straight answers about AC service, construction, and how O'Brien works.
How fast can you come out for AC repair?
We guarantee a call-back within 30 minutes during business hours, and we prioritize no-cool calls so you're not left sweating in the South Florida heat. Call or text 954-205-1381 and we'll get you scheduled as fast as possible.
Do you handle no-cool emergencies?
We treat no-cool situations as a priority and move fast to get your air running again during business hours. Call 954-205-1381 and we'll tell you exactly what we can do and when.
What areas do you serve?
We're based in Fort Lauderdale and serve 36+ communities across Broward and Palm Beach counties — including Hollywood, Pompano Beach, Pembroke Pines, Coral Springs, Plantation, Davie, Sunrise, Weston, Boca Raton, Delray Beach, and West Palm Beach. Don't see your city? Call — we likely cover it.
How much does a new AC system cost in South Florida?
It depends on your home's size, your ductwork, and the system's efficiency, so we give you a clear, no-pressure estimate before any work. As a general guide, a new central AC system in South Florida typically runs from about $6,500 to $14,000 installed — we'll size yours correctly and explain every line.
Should I repair my AC or replace it?
If your system is under about 10 years old and the repair is minor, fixing it usually makes sense. Older units with major or repeated failures are often cheaper to replace over time. We'll diagnose the real problem, explain your options honestly, and never push a replacement you don't need.
Do you do both AC and construction?
Yes. O'Brien handles air conditioning service and construction services — AC repair, installation, maintenance, additions, renovations, and build-outs. One accountable team, one clear point of contact.
What's included in your Five-Point Tune-Up?
Our Five-Point Tune-Up covers the drain line, mechanical components, air flow, electrical connections, and refrigerant — the five areas where South Florida systems most often run into trouble. When you book a repair or sign up for a maintenance plan, we include the tune-up at no charge.
How often should I service my AC in Florida?
Because Florida systems run nearly year-round in heat, humidity, and salt air, we recommend a professional tune-up at least once a year — twice is even better. Regular maintenance catches small issues before they become expensive breakdowns.
From the blog
Straight answers about your South Florida AC.
Repair or Replace? How to Decide on Your South Florida AC
A clear framework for deciding when a repair makes sense and when replacement is the smarter long-term call.
ReadHow Often Should You Service Your AC in Florida?
Florida systems run almost year-round. Here's how often to schedule maintenance and what it actually prevents.
Read8 Warning Signs Your AC Is About to Fail
The early symptoms most homeowners ignore — and how catching them early saves you from a no-cool emergency.
ReadRequest service
Tell us what's going on.
Send this and we'll call you back within 30 minutes during business hours. For a no-cool emergency, calling is fastest.
- 30-minute callback guarantee
- Straight answers, no pressure
- Fort Lauderdale, Broward & Palm Beach
Call O'Brien before the problem gets bigger.
No-cool call, new system, maintenance visit, renovation, addition, or build-out. Call or text and we will return your call within 30 minutes during business hours.
- Mon–Fri, 9:30 AM – 4:00 PM
- 30-minute callback, business hours
- Fort Lauderdale, Broward & Palm Beach