Tower / Portable Evaporator
Keep your boat's air conditioning running while hauled out in the boatyard.
Our custom miniature cooling tower system replaces raw seawater with a closed-loop evaporative circuit, allowing your existing marine AC to run at full capacity on the hard — protecting your interior from heat, humidity, and boatyard dust.
Cooling Towers in Action
Real-world portable cooling tower installations at boatyards
Accumar Marine Services cooling tower — available for hire at SWFL boatyards
Our technician connecting the closed-loop system to a yacht during haul-out
Full-size Accumar tower servicing a superyacht at a Florida boatyard
Tower unit on trailer — easy to position next to any hauled vessel
What Happens When Your AC Stops on the Hard?
When a boat is hauled out, the raw water intake is above the waterline and the AC system cannot operate. Without climate control, the interior is exposed to extreme heat, humidity, and boatyard contaminants.
Interior temperatures can exceed 140°F in direct sun. This warps wood, delaminates fiberglass, damages electronics, and degrades upholstery and fabrics.
Trapped humidity breeds mold and mildew throughout the cabin, in lockers, behind panels, and inside soft furnishings — often requiring expensive remediation.
Boatyards generate fiberglass dust, paint particles, and sanding debris. Without positive air pressure, these contaminants infiltrate every opening.
Our Solution: Miniature Cooling Towers
Accumar Marine has developed a specialized portable evaporator system that lets your boat's AC run normally while out of the water.
Keep Your AC Running
Your boat's existing air conditioning system continues to operate normally while hauled out, maintaining comfortable interior temperatures.
Prevent Interior Damage
Heat and humidity cause mold, mildew, delamination, and electronics damage. Our system keeps the interior climate-controlled to prevent costly repairs.
Closed-Loop Water Circuit
Instead of pumping raw seawater, our system circulates water through a closed loop with custom miniature cooling towers — no sea strainer needed.
Energy Efficient
The evaporative cooling towers use minimal electricity while providing the cooling capacity your marine AC system needs to run at full performance.
Quick Setup & Removal
Our portable tower units connect directly to your boat's existing raw water plumbing. Setup takes under an hour with no permanent modifications.
Keep Dirt & Dust Out
Running your AC while in the yard keeps positive air pressure inside the boat, preventing boatyard dust, fiberglass particles, and debris from entering.
How It Works
The system is straightforward — we replace the raw seawater supply with a closed-loop evaporative cooling circuit.
Disconnect Raw Water Intake
We disconnect your boat's through-hull raw water intake that normally feeds seawater to the AC system.
Connect Closed-Loop Circuit
Our portable cooling tower connects to the raw water supply and return lines, creating a sealed recirculating water circuit.
Miniature Cooling Tower Operates
The custom evaporator tower cools the recirculating water through evaporation, just like an industrial cooling tower but sized for marine AC systems.
AC Runs Normally
Your boat's air conditioning system operates exactly as it would on the water — same thermostat, same controls, same comfort.
Removal When Launched
When your boat goes back in the water, we reconnect the raw water intake and remove the portable tower. No trace left behind.
Transparent Rental Pricing
Simple, straightforward pricing with no hidden fees. Keep your boat protected for the duration of your haul-out.
One-Time
Setup & Connection
- Delivery to your boatyard
- Professional installation
- Connection to your AC system
- System testing & verification
Weekly
Tower Rental
- Portable cooling tower unit
- 24/7 continuous operation
- Water reservoir maintenance
- Technical support included
Example
4-Week Haul-Out
- $300 setup + connection
- $350 × 4 weeks = $1,400
- Removal included at end
- Saves thousands in repairs
Multi-zone systems and super yachts may require additional towers. Contact us for a custom quote.
Long-term rental discounts available for haul-outs exceeding 8 weeks.
Why Choose Our Tower Evaporator?
Uses your boat's existing, properly installed marine AC system
No portable AC units, no window kits, no makeshift ducting
Maintains positive cabin pressure to keep dust and debris out
Closed-loop system — no raw water needed, no marine growth
Quick connect/disconnect — no permanent modifications to your boat
Available for rental or purchase based on your haul-out duration
Works with all major marine AC brands and multi-zone systems
Custom-sized towers for boats from 30 feet to super yachts
Boatyards & Marinas We Serve
Accumar Marine provides portable cooling tower services throughout Southwest Florida. We deliver, install, and maintain tower evaporators at these boatyards and marinas.
Fort Myers & Cape Coral
Hinckley Yacht Services
Premium yacht repair & storage
Gulf Harbour Marina
186 slips, vessels to 97 ft
Marinatown Yacht Harbour
135 deep water slips, North Fort Myers
Legacy Harbour Marina
Downtown Fort Myers waterfront
Tarpon Point Marina
Cape Coral premier marina
Cape Harbour Marina
Cape Coral waterfront
PORT 32 Cape Coral
Full-service marina
Fort Myers Beach
Salty Sam's Marina
Full-service marina & rentals
Moss Marina
Wet & dry storage, fuel dock
Snook Bight Marina
Estero Bay, slips & dry storage
Fish Tale Marina
Waterfront dining & dockage
Naples & Marco Island
Naples Boat Yard
60-ton travel lift, haul-outs
Walker's Marine
Marco Island full-service
Naples City Dock
Naples Bay waterfront
Marco Yacht Sales
Service & seasonal care
American Marine Group
Naples, Goodland & Isles of Capri
Sanibel, Captiva & Beyond
Sanibel Marina
Sanibel Island
'Tween Waters Marina
Captiva Island
Burnt Store Marina
Punta Gorda
Laishley Marina
Punta Gorda waterfront
Fishermen's Village
Punta Gorda
Don't see your boatyard listed? We service all marinas and boatyards in Lee, Collier, and Charlotte counties.
Call 239-323-9600 to schedule service at your yardFrequently Asked Questions
How long can the system run continuously?
The tower evaporator system can run 24/7 for as long as your boat is in the yard. Many customers keep it running for weeks or even months during extended haul-outs.
Does it work with any marine AC brand?
Yes. Our system is compatible with all major marine AC brands including Dometic, Webasto, Marine Air, Cruisair, Mermaid, and others. If your boat has a raw-water-cooled AC system, our tower will work with it.
How much water does the evaporator use?
The system uses very little water — typically a few gallons per day that evaporates through the cooling tower. We provide a small reservoir that only needs occasional topping off.
Can I run it on shore power?
Absolutely. The system runs on standard shore power, which is already available at most boatyards. The tower itself uses minimal additional power beyond what your AC already draws.
What sizes of boats does this work for?
We have tower units sized for boats from 30 feet up to super yachts with multiple AC zones. We can also run multiple towers in parallel for larger vessels.
Is this a rental or purchase?
We offer both rental and purchase options. Most customers rent the tower for the duration of their haul-out. Contact us for pricing based on your boat's AC capacity and expected duration.
Why not just use a portable AC unit?
Portable AC units are inefficient, noisy, and require ducting that doesn't seal well on boats. Our system uses your boat's existing, properly installed marine AC — which is designed for the space, already ducted, and far more effective.
Protect Your Boat During Your Next Haul-Out
Contact Accumar Marine to schedule a tower evaporator installation before your next boatyard visit. Available for boats in Southwest Florida. You can also book online.