Marine air conditioning self-contained unit with compressor and blower
Installation & Repair

Marine Air Conditioning

Complete cooling solutions for yachts and sportfish. Chiller repair, air handler descaling, refrigerant charging, and new split-system installations from Dometic, Cruisair, Mabru, and Webasto.

Overview

Complete marine ac service — dockside, any brand.

Marine air conditioning is the single most-used system on a South Florida yacht — and the first to fail when saltwater, heat, and continuous run-time catch up with it. Lee's Professional Marine Services handles every part of the marine HVAC chain, from raw-water intake to the final supply grille, and we do it at your slip.

A marine A/C system is nothing like a house unit. It has to move heat with seawater instead of outside air, survive constant salt exposure, run on 120/240 V shore power, a genset, or 12/24v systems to cool a huge fiberglass box that's often getting direct sun on every side. When any one piece of that chain goes wrong — a fouled condenser coil, a weak seawater pump, a stuck reversing valve, a slow refrigerant leak, a failed control board — the whole boat becomes unlivable within an hour. Our job is to diagnose and fix it fast, on the boat, without pulling the vessel or booking a shop slot two weeks out.

We service self-contained units (the small under-berth or under-settee boxes typical on 25–50 ft boats), split gas systems (compressor/condenser below, air handlers throughout the vessel), and full chilled-water plants (a central chiller feeding fan-coil units in every cabin, standard on 60 ft-plus yachts). Every one of those architectures has its own failure signature, and Daniel has 15+ years running each of them across sportfish, motoryachts, catamarans, and cruisers in Palm Beach, Broward, and Miami-Dade.

Common calls: 'my A/C won't cool anymore,' 'the compressor keeps tripping the breaker,' 'the seawater flow alarm keeps going off,' 'there's water in the bilge under the air handler,' 'ice is building up on the copper lines,' 'the display reads HPF or LPF and shuts down.' Every one of those is a real diagnostic path — not a guess-and-replace exercise. We arrive with gauges, a leak detector, a vacuum pump, a recovery machine, R-410A and R-134a on the truck, and a stock of the pumps, capacitors, contactors, sensors, and control boards that break most often on Dometic, Cruisair, Mabru, Webasto, MarinAire, and Frigomar equipment.

New installations are a specialty. Repowering a 40-year-old Cruisair split system with a modern Dometic or Mabru variable-speed unit typically drops the amp draw by 30–50%, cuts noise dramatically, and adds real heat capability for the two weeks a year South Florida actually needs it. We handle the load calc, the ducting layout, the through-hull and pump sizing, the wiring, the commissioning, and the follow-up service — one vendor, one point of accountability.

Every service call is a flat $240 that covers the first hour of on-site diagnostic and travel from Boynton Beach to Ft. Lauderdale. Outside that range is $60 per half hour of travel. No shop drop-off, no haul-out, no waiting on the yard's schedule — we come to your dock.

Services we offer:

  • Chiller & self-contained unit repair
  • Full system installations
  • Refrigerant leak diagnostics
  • Ductwork & air handler service
  • Pump & solenoid replacement
  • Refrigeration recharge
  • Repair or replace Pumps
  • Displays
  • Cables
  • Compressors
  • Condenser
  • Reversing valves
  • Sensors
From the field

Marine AC — real jobs, real hardware.

A look at the systems we service and the failure modes we resolve every week across Southeast Florida.

Self-contained marine AC unit with rotary compressor
Self-contained unit
Compact marine AC unit with digital control module
Compact chassis
Marine AC condenser coil and refrigerant lines
Condenser & coil
Marine air conditioning system installed onboard
Installed onboard
Brands we service

Every major marine ac manufacturer — parts, refrigerant, and diagnostics.

We service and install every major marine A/C brand sold in the United States. If you can name it, we've worked on it — parts, refrigerant, and control-board diagnostics included.

Dometic

including legacy Cruisair, Marine Air, and Condaria lines

Cruisair

classic tempered-water and self-contained units

Mabru Power Systems

12V, 24V, and hybrid variable-speed units

Webasto

BlueCool self-contained and chilled-water systems

MarinAire

self-contained and split systems

Frigomar

chilled-water plants on European yachts

Aqua-Air

self-contained, split, and chiller platforms

Flagship Marine

self-contained and split units

FCF (Fischer Panda)

chiller integration on genset-heavy setups

Climma

Veco chillers and fan-coil units

Vector

self-contained residential-marine conversions

Common problems we fix

The failure modes we see every week — and the parts we carry.

Weak or no cooling

Usually a low refrigerant charge from a slow leak, a clogged raw-water strainer, a marine-growth-fouled condenser coil, or a failing seawater pump. We test all four in the first 20 minutes.

HPF / LPF fault codes

High-pressure faults almost always trace to seawater flow (pump, strainer, or scale in the coil). Low-pressure faults are typically a leak, a low charge, or a stuck TXV. Both are same-visit fixes when we have the part on the truck.

Breaker trips or short-cycles

Failed run capacitor, worn contactor, tired compressor, or an undersized shore-power feed. We meter every component before condemning anything.

Water in the bilge

Clogged condensate drain, corroded drain pan, or a failed vent loop. Cleared, tested, and re-routed if needed.

Noise and vibration

Worn compressor mounts, an unbalanced blower wheel, or a sea-water pump running dry. All rebuildable or replaceable in the slip.

Reversing valve stuck

Reverse-cycle heat not working, or the unit runs backwards. Solenoid-coil swap or full valve replacement — we carry both.

How it works

From diagnostic to commissioned system — one visit whenever possible.

STEP 1

Dockside diagnostic

Gauges on the service ports, seawater flow check, coil temp differentials, electrical load readings, and a full control-board fault-code dump.

STEP 2

Same-visit repair

Refrigerant recharge, leak seal, pump swap, capacitor and contactor replacement, or board swap — 90% of calls close the same day.

STEP 3

System commissioning

For new installs and major repairs: vacuum to 500 microns, weigh-in charge, full-load test at every fan-coil, and a written performance sheet.

STEP 4

Preventative maintenance

Annual coil cleans, strainer service, pump anode replacement, and refrigerant top-offs on a schedule that matches how you use the boat.

FAQ

Marine Air Conditioning — frequently asked questions

Do you work on old Cruisair systems, or only new gear?

Both. We keep control boards, solenoid coils, and reversing valves for 1980s–2000s Cruisair systems and can source vintage seawater pumps and evaporators when needed. If the unit is beyond economical repair, we'll say so and quote a Dometic or Mabru retrofit.

Can you install a new A/C unit in a slip, or does the boat have to come to a yard?

Self-contained and most split installs happen right at the slip. Full chilled-water retrofits sometimes need yard time for through-hulls, but the mechanical, electrical, and commissioning work is all dockside.

How long does a typical marine A/C repair take?

Diagnostic is the first 45 minutes. Most single-fault repairs — capacitor, contactor, pump, refrigerant recharge with leak seal — finish inside 2–3 hours. Compressor replacements or full recharges after a major leak run half a day.

What refrigerant do you carry?

R-410A and R-134a on the truck. Older systems using R-22 we recover and either recharge from stock or retrofit to a compatible drop-in replacement.

Client Feedback

Trusted by yacht owners across South Florida.

View on Google

"Daniel is a true professional when it comes to marine repairs I highly recommend him! 100% trustworthy and amazing work!"

Johnathan Christan

a month ago

"Daniel worked on my 35 Ft Maxum my AC was not working. He was able to get it fixed in less than two hours. The invoice was extremely reasonable — totally recommended. Thank you."

Mostafa Hussein

Local Guide · 25 reviews · 3 months ago

"Daniel did a marine AC repair on our boat out of Fort Lauderdale. He was professional, courteous, on time and pleasant to work with. If you're in the Fort Lauderdale area this is your guy for air conditioning or refrigeration."

Steven Hodgman

11 months ago

"Danny's knowledge of marine HVAC systems is unparalleled. He has been able to diagnose and fix 2 issues on my boat that others could not. I highly recommend him for any HVAC issues you may be experiencing."

Michael Ledwitz

11 months ago

"I have worked with Daniel for years and he goes above and beyond to help with anything I've needed. I never feel like he is recommending something that is not needed and find him to be honest and qualified."

Bill Smith

11 months ago

"I work on boats — I've worked with Daniel, he is very professional! Thanks again! 10/10."

Gary Bemiss

4 months ago

"Daniel did a repair of the refrigerator on my 1978 Bristol sailboat. I believe the unit is the original. I was prepared to have the entire thing ripped out and replaced. Daniel came out, spent hours testing and inspecting it, and got the unit up and running! I was very impressed. And the beer stays icy cold! I highly recommend Daniel for all your HVAC needs."

Wayne Malone

2 months ago