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Marine AC Installation

Professional marine air conditioning installation for boats and yachts in Fort Myers, Cape Coral, Naples, and all of Southwest Florida. From single-zone self-contained units to multi-zone chilled water systems. Dometic certified technicians with 25+ years of marine HVAC experience. We handle everything from initial survey to final commissioning.

Marine AC System Types We Install

We install all three major types of marine air conditioning systems. The right choice depends on your vessel size, number of zones, and cooling requirements.

Self-Contained

Boats 20–45 ft

4,000 – 16,000 BTU

All-in-one units with compressor, evaporator, and controls in a single housing. Easiest to install and maintain. Ideal for single-zone cooling on smaller vessels.

Models We Install:

Dometic DTU Turbo, Turbo GTX, ECD Envirocomfort, MCS

Split Systems

Boats 30–60 ft

4,000 – 60,000 BTU

Separate condensing unit and air handlers connected by refrigerant lines. Allows multi-zone cooling with quieter cabin operation. Flexible placement options.

Models We Install:

Dometic TVE Emerald, DEUX, AU Series, EBLE

Chilled Water

Yachts 50–200+ ft

24,000 – 120,000+ BTU

Central chiller circulates cold water to fan coil units throughout the vessel. Maximum flexibility for large yachts with many zones. Most efficient for high BTU demands.

Models We Install:

Dometic VARCX, EBE, Fan Coil AP Air Handlers

Our Installation Process

Every marine AC installation follows a proven 6-step process to ensure proper sizing, clean installation, and reliable long-term performance.

1

On-Board Survey

We inspect your vessel, measure cabin volumes, assess insulation, check electrical capacity, and identify the best mounting locations for equipment and ducting.

2

System Design

Based on the survey, we recommend the right system type and BTU capacity. You receive a detailed proposal with equipment specs, installation plan, and pricing.

3

Equipment Sourcing

We order the correct Dometic or other brand equipment for your vessel. All units are new, factory-warranted, and matched to your specific requirements.

4

Installation

Our technicians install the AC unit, seawater plumbing (thru-hull, strainer, pump), ducting, electrical connections, thermostat, and controls. All work meets ABYC standards.

5

Commissioning

We charge the system, verify refrigerant levels, test all zones, check seawater flow rates, and confirm proper cooling performance before handoff.

6

Owner Training

We walk you through system operation, thermostat controls, maintenance schedule, and what to watch for. You get our direct line for any questions.

Proper Seawater Plumbing Layout

Correct seawater flow is critical for marine AC performance. Here is the standard installation layout for a self-contained turbo unit.

Marine AC seawater plumbing installation diagram showing correct flow from thru-hull to strainer to pump to AC unit

Standard marine AC seawater plumbing layout. Steady upward flow from scoop-type thru-hull inlet through strainer and seawater pump to the turbo AC unit. All hose connections double-clamped per ABYC standards.

What's Included in Every Installation

Equipment & Installation

  • New Dometic (or specified brand) AC unit with factory warranty
  • Seawater pump, strainer, and thru-hull fitting
  • Marine-grade ducting and supply/return grilles
  • Digital thermostat and control panel
  • All electrical connections and breaker installation
  • Condensate drain plumbing

Quality & Standards

  • ABYC-compliant installation practices
  • Double-clamped hose connections throughout
  • Proper refrigerant charge and leak testing
  • Seawater flow rate verification
  • Full system commissioning and performance test
  • Owner training and maintenance documentation

Marine AC BTU Sizing Guide

Proper BTU sizing is the most important factor in a successful marine AC installation. Undersized systems run constantly and never reach temperature. Oversized systems short-cycle, causing humidity problems and premature wear.

Boat SizeTypical Cabin AreaRecommended BTUSystem Type
20–28 ftSmall cabin / V-berth4,000 – 7,000Self-Contained
28–35 ftSalon + 1 cabin7,000 – 12,000Self-Contained
35–45 ftSalon + 2 cabins12,000 – 24,000Self-Contained or Split
45–55 ftMultiple zones24,000 – 48,000Split System
55–80 ft4–6 zones36,000 – 72,000Split or Chilled Water
80+ ft6+ zones60,000 – 120,000+Chilled Water

These are general guidelines for Southwest Florida conditions. Actual BTU requirements vary based on insulation, window area, sun exposure, and desired temperature. We always perform an on-board survey for accurate sizing.

Marine AC Brands We Install

DometicWebastoMarine AirCruisairMarinaireMermaidFlagshipCondaria

We primarily install Dometic systems due to their proven reliability, parts availability, and comprehensive warranty. We also work with other brands based on customer preference and vessel requirements.

Marine AC Installation FAQ

How much does marine AC installation cost?
Marine AC installation costs depend on system type, BTU capacity, vessel size, and complexity of the ducting and seawater plumbing. A single-zone self-contained unit on a 30-foot boat is significantly less than a multi-zone chilled water system on a 70-foot yacht. We provide detailed written estimates after an on-board survey. Call 239-323-9600 for a free consultation.
What size marine AC do I need for my boat?
BTU sizing depends on cabin volume, insulation quality, number of windows, geographic location, and how many zones you need. As a rough guide: 5,000-7,000 BTU for a small cabin, 12,000-16,000 BTU for a mid-size salon, and 24,000+ BTU for large yachts. Our AC System Builder tool can help estimate, and we always verify with an on-board survey before installation.
Self-contained vs split system — which is better for my boat?
Self-contained units (like the Dometic DTU or ECD) combine the compressor, evaporator, and controls in one box — ideal for boats under 40 feet with limited zones. Split systems (like the Dometic DEUX or TVE) separate the condensing unit from the air handler, allowing multiple zones and quieter operation. For boats over 50 feet, chilled water systems offer the most flexibility. We help you choose based on your vessel's layout and cooling needs.
How long does a marine AC installation take?
A straightforward single-unit replacement takes 1-2 days. A new installation with ducting, seawater plumbing, and electrical work typically takes 2-4 days depending on vessel access and complexity. Multi-zone or chilled water systems on larger yachts may take a week or more. We schedule installations to minimize your downtime.
Do you install Dometic marine AC systems?
Yes. We are experienced Dometic installers and work with the full Dometic marine AC lineup — DTU Turbo, Turbo GTX, ECD Envirocomfort, TVE Emerald, AU Series, DEUX, EBLE, and VARCX chilled water systems. We also install Webasto, Marine Air, and other brands.
Can you add AC to a boat that doesn't have it?
Absolutely. We design and install complete marine AC systems on boats that have never had air conditioning. This includes thru-hull installation for seawater intake, seawater pump and strainer, ducting, electrical panel upgrades if needed, and the AC unit itself. We handle everything from initial survey to final commissioning.

Marine AC Installation Service Areas

Professional marine AC installation at your dock, marina, or boatyard throughout Southwest Florida

Fort MyersCape CoralNaplesSanibel IslandFort Myers BeachPunta GordaBonita SpringsMarco IslandPine IslandCaptiva IslandNorth Fort MyersPort CharlotteEnglewoodSarasotaVeniceEstero

Ready for a New Marine AC System?

Whether you're replacing an old system or adding AC to your boat for the first time, we handle everything from survey to commissioning. Call today for a free consultation.