HomeMarine Air Conditioning

Boat AC Repair Fort Myers

Mobile boat AC repair, diagnostics, installation, troubleshooting, and AC flush service in Fort Myers, Cape Coral, Naples, and throughout Southwest Florida. EPA 608 certified technicians with 30+ years of experience. We also sell Dometic self-contained, split, and chiller equipment with direct factory parts and technical support. Service is delivered to your dock.

Marine AC Services We Provide

Marine AC service across SWFL includes diagnostics, seawater-flow troubleshooting, repairs, preventive maintenance, descaling, installation, controls, self-contained units, split systems, and chilled-water systems.

Marine AC Repair

Diagnose compressor, refrigerant-circuit, fan, thermostat, control, electrical, airflow, drainage, and seawater-flow problems across supported marine air-conditioning systems.

Marine AC Installation

New marine AC system design and installation for boats of all sizes. Proper BTU sizing, ducting, seawater plumbing, and electrical connections. Dometic, Webasto & more.

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AC Troubleshooting

Comprehensive diagnostic service to identify why your boat's AC isn't cooling. Pressure testing, refrigerant analysis, airflow measurement, and seawater flow verification.

AC Flush & Maintenance

Evaluate seawater flow and heat-exchanger condition, then clean the circuit when measurements and inspection support that work.

AC Maintenance

Annual marine AC maintenance including full system inspection, refrigerant check, strainer cleaning, impeller inspection, and performance testing.

Dometic AC Sales & Upgrades

Dometic self-contained, split, and chilled-water equipment, direct factory parts access, application selection, installation, and commissioning by factory-trained technicians.

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Dometic equipment sales & support

Dometic marine AC units, parts, installation, and service

Accumar is an authorized Dometic dealer and service provider in Southwest Florida. Our factory-trained technicians work with direct factory technical support and direct factory parts access to identify, source, install, commission, and service the correct equipment for the vessel.

Broad inventory of common Dometic service parts
Direct parts access across the Dometic product line
Factory-trained installation and diagnostic support
Equipment matched to model, voltage, capacity, and space

Many Dometic units and parts may be available the same day or next business day, subject to model, voltage, capacity, order timing, current stock, and factory or distributor availability. We confirm availability before promising a pickup, delivery, or installation date.

Self-Contained Units

Compact Dometic marine air conditioners selected by capacity, voltage, airflow, seawater flow, and available installation space.

Split Systems

Condensing units, air handlers, controls, and replacement planning for quieter multi-zone cabin cooling.

Chiller Systems

Dometic chilled-water plants, air handlers, pumps, controls, and retrofit planning for larger yachts and multi-zone systems.

Accumar is one of Southwest Florida's largest Dometic marine air-conditioning installers and service partners.

Why Regular AC Flushing Is Critical

South Florida saltwater doesn't forgive neglect. Here's what we pull out of marine AC strainers.

Before and after marine AC flush — barnacle-clogged strainer vs clean strainer after professional flush service
BEFORE — Barnacle & Scale Buildup
AFTER — Professional Flush

Actual raw water strainer from a boat in Fort Myers. Barnacles and calcium scale choke water flow, killing cooling performance. A professional flush restores full capacity.

Marine AC Brands We Service

These manufacturer marks identify equipment Accumar evaluates for service, repair, installation, or replacement. They do not imply authorization. Dometic dealer/service status and factory-trained technician support are documented separately on this page.

Dometic marine climate systems logoDometic
Webasto marine air conditioning logoWebasto
Condaria marine air conditioning logoCondaria
Cruisair marine air conditioning logoCruisair
Marine Air Systems logoMarine Air
MarinAire marine air conditioning logoMarinAire
Mermaid Manufacturing marine air conditioning logoMermaid
CTM Marine air conditioning logoCTM Marine
Flow Marine Systems air conditioning and refrigeration logoFlow Marine Systems
Technicold marine HVAC logoTechnicold
Flagship MarineVelairCarrierMitsubishi

Florida Heat Is Coming — Is Your Boat AC Ready?

Seasonal heat places more demand on marine air-conditioning systems and can expose restricted seawater flow, fouled heat exchangers, weak pumps, and control faults.

Baseline flow, temperature, electrical, drain, and control checks make developing problems easier to identify.

Liveaboards

High annual run time makes seawater-flow checks, filter care, condensate service, electrical inspection, and documented maintenance especially important.

Seasonal Boaters

Systems that sat idle all winter need flushing before first use. Stagnant saltwater accelerates scale — whether your boat's in the water or on the hard.

Charter / Rental

Pre-season inspection helps identify cooling, drainage, airflow, and control issues before a guest or charter turnaround.

5 Signs Your Boat AC Needs Service Now

If you notice any of these, call before it becomes an emergency.

1

Warm air or reduced cooling

Schedule a diagnostic

Reduced cooling can involve seawater restriction, heat-exchanger fouling, airflow problems, sensor faults, or refrigerant-circuit issues. Testing identifies the actual cause before parts are replaced.

2

System cycles on and off rapidly (short-cycling)

Prompt diagnosis

Short-cycling can involve a safety limit, restricted heat rejection, electrical instability, sensors, controls, or refrigerant conditions. Continued operation may increase equipment stress.

3

Water flow from overboard discharge has slowed

Inspect soon

Reduced discharge may indicate a clogged strainer, worn pump or impeller, air leak, fouled condenser, closed valve, or another seawater-circuit restriction.

4

Musty or moldy smell from vents

Schedule cleaning

Odors can originate at filters, drain pans, evaporators, condensate lines, ducting, or surrounding materials. The correct cleaning scope depends on what the inspection finds.

5

Breaker trips when AC starts

Call for service

A trip can involve startup components, compressor load, wiring, connections, supply voltage, or protection devices. Stop repeated resets and have the circuit and equipment diagnosed.

Common Questions

Marine AC Questions \u2014 Southwest Florida

Why is my boat's AC not blowing cold air?

Common causes include restricted seawater flow, a fouled condenser, strainer or pump problems, a refrigerant leak, thermostat or control faults, airflow restrictions, electrical issues, or compressor performance. We diagnose flow, temperatures, pressures, controls, and electrical load before recommending repair.

What causes high-pressure lockouts on marine AC systems?

A high-pressure lockout can involve inadequate seawater flow, a restricted or fouled condenser, pump or strainer problems, airflow issues, overcharge, a control fault, or another refrigeration-circuit condition. The stored fault, water flow, temperatures, pressures, and electrical readings should be checked before selecting a repair.

How often do I need a marine AC flush in Florida saltwater?

Flush intervals depend on operating hours, seawater conditions, condenser design, observed flow, pressure, temperature approach, and manufacturer guidance. Inspection and recorded baseline measurements should determine whether cleaning is needed rather than a universal calendar interval.

How much does marine air conditioning repair cost in Fort Myers?

Marine AC repair costs depend on the system, vessel access, and scope of work. A basic diagnostic and strainer cleaning is on the lower end; a compressor replacement or full system overhaul costs more. We start every job with a thorough diagnostic to identify the root cause, then provide a clear written estimate before any work begins. No surprises. Call 239-323-9600 for a free phone consultation.

Is it cheaper to repair or replace my marine air conditioner?

The decision depends on the diagnosed fault, equipment age and condition, refrigerant and parts support, access, repair history, electrical and seawater compatibility, and replacement-installation scope. We compare repair and replacement options after inspection rather than using a fixed percentage or age rule.

What brands of marine air conditioning do you service?

We evaluate Dometic, legacy Cruisair, Webasto, Marine Air, Mermaid, Flagship, Condaria, Marinaire, Velair, Carrier, and custom installations. Service scope and parts are confirmed from the installed model, documentation, symptoms, access, availability, and required tooling.

My boat AC smells musty — is that mold?

Not necessarily. Odor can involve standing condensate, a restricted drain, wet insulation, dirty filters or coils, duct contamination, bilge sources, or other vessel conditions. We inspect the drain path, pan, filter, coil, blower area, ductwork, and nearby moisture sources before recommending cleaning or component work.

Do you offer emergency marine AC repair on weekends?

Accumar offers 24/7 assistance for urgent marine AC issues in Southwest Florida. Call 239-323-9600 so we can assess the symptoms, vessel location, safe access, technician availability, and likely parts requirements. Response timing is confirmed case by case.

Can you install a new marine AC system on my boat?

Yes. We design and install self-contained, split, and chilled-water systems after reviewing heat load, voltage, seawater plumbing, ducting, drainage, controls, equipment access, and current product availability. Dometic equipment receives the separately documented dealer, factory-trained technician, direct-support, and parts treatment shown on this page.

How often should I have my boat's AC system serviced?

Service frequency depends on hours, seasonal use, water conditions, equipment type, service history, and manufacturer guidance. A useful visit may include strainer and pump checks, airflow and filter inspection, condensate drainage, electrical connections, controls, temperature measurements, and condenser evaluation; cleaning or refrigerant work should be condition-based.

Why does my marine AC keep tripping the breaker?

Breaker trips can involve supply voltage, wiring or connections, overcurrent protection, capacitors, motors, pumps, compressor load, water flow, or another fault. Repeatedly resetting a breaker without diagnosis can be unsafe; verify the circuit and equipment readings before returning the system to service.

What size marine AC do I need for my boat?

Boat length alone is not enough. Capacity planning should consider compartment volume, glazing, insulation, occupancy, exposure, duct design, air distribution, electrical supply, seawater conditions, zone layout, and existing equipment. We use an on-board heat-load review and current manufacturer data before recommending equipment.

I'm a liveaboard in Fort Myers — how do I keep my AC running reliably?

Liveaboard duty cycles justify more frequent condition checks than intermittent use, but the interval depends on hours, water conditions, equipment, and observed trends. Track strainer condition, seawater discharge, filter and coil cleanliness, condensate drainage, temperature performance, electrical load, and alarms; service when measurements or manufacturer guidance indicate.

What is the difference between self-contained and split marine AC systems?

Self-contained units combine the refrigeration components and air handler in one assembly. Split systems locate condensing and air-handling components separately. Chilled-water systems use central chillers and distributed air handlers. The appropriate type depends on zones, load, space, noise goals, plumbing, electrical supply, controls, access, and redundancy requirements.

Service Area

Marine AC Service Across SWFL

Mobile marine air conditioning repair delivered to your dock, marina, or boatyard. Based in Fort Myers, we service vessels from Marco Island to Port Charlotte and everywhere in between.

46 marinas served|Fort MyersCape CoralNaplesMarco IslandSanibelPort CharlotteBonita SpringsPunta GordaSarasota

Need Marine AC Repair in Southwest Florida?

Don't suffer in the Florida heat. Call Accumar Marine Services for fast, professional marine air conditioning repair delivered to your dock.

EPA 608 Certified \u2022 30+ Years Experience \u2022 Same-Day Service Available \u2022 All Brands

Prevent A/C Breakdowns Before They Happen

Our A/C Maintenance Program keeps your marine air conditioning running — $140/visit with guaranteed working A/C when you arrive at your boat.

Captain's Maintenance Bulletin

Seasonal checklists, diagnostic tips, and marine AC insights from 30+ years in the field. No fluff — just what works.

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© 2026 Accumar Marine Services. Marine Air Conditioning Repair, Installation & Service in Fort Myers, Cape Coral, Naples & Southwest Florida.

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