Hear from Our Customers
Your refrigerator holds temp overnight. Your AC cools the cabin in under an hour, not three. You stop worrying whether your provisions will spoil before you reach the marina.
That’s what proper marine refrigeration looks like. Not systems that work sometimes. Not units that fail every other season. Reliable cooling that actually handles saltwater air, humidity, and the vibration your boat throws at it every time you’re underway.
Most HVAC techs don’t understand marine systems. They treat your boat like a house. They use the wrong refrigerants, skip the marine-grade components, and wonder why the system fails six months later. You end up paying twice—once for the bad install, again for someone who knows what they’re doing.
We’ve spent over 40 years working on marine HVAC and refrigeration systems across Long Island’s North Shore. We serve boat owners throughout Mount Sinai, Port Jefferson Harbor, and the surrounding boating community with the kind of specialized knowledge that comes from actually doing this work—not just claiming to.
We handle everything from simple repairs to complex custom installations that other companies turn down. We’re available 24/7 because we know systems don’t fail on your schedule. Free estimates, straight answers, no runaround. That’s how we’ve earned dozens of five-star reviews from boat owners who’ve dealt with enough bad techs to know the difference.
You call or reach out online. We respond fast—often same-day during season. We ask the right questions up front so we bring the right parts and tools to your boat.
Our tech shows up and diagnoses the actual problem. Not what we think it might be. We check refrigerant levels, test compressors, inspect for saltwater corrosion, and look at electrical connections. Then we explain what’s wrong in plain language and give you a free estimate before touching anything.
Once you approve the work, we fix it right. Marine-grade components. Proper refrigerants for marine systems. Installation that accounts for engine vibration and humidity. We test everything before we leave—cooling temps, airflow, electrical draw. You get a system that works, not a Band-Aid that fails next month.
If you need maintenance or a new installation, same process. Honest assessment, clear pricing, quality work. No surprises.
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We handle the full spectrum of boat refrigeration and marine AC work. Installation of new systems sized correctly for your vessel. Repairs on existing units from any manufacturer. Seasonal refrigeration maintenance to catch problems before they strand you mid-season. Emergency service when your system fails and you need help now.
Mount Sinai boat owners deal with specific challenges. Long Island Sound’s saltwater environment eats through standard components faster than freshwater. Summer humidity loads stress AC systems harder than they’d work inland. Your refrigeration unit fights ambient heat that climbs into the 90s while your boat sits at the dock in full sun.
That’s why marine systems need techs who understand the environment. We use corrosion-resistant parts, properly sealed connections, and refrigerants rated for marine applications. We know how to mount compressors so engine vibration doesn’t shake them apart. We understand electrical systems on boats and how to integrate cooling systems without overloading your shore power or generator.
Whether you’ve got a small cabin cruiser or a 50-foot yacht, the approach is the same: diagnose accurately, fix it right, make sure it lasts. We also handle boat HVAC upgrades when you’re ready to replace aging systems with modern, energy-efficient units that cool better and draw less power.
Most repairs finish the same day if parts are in stock. Simple fixes like refrigerant recharge or thermostat replacement take one to two hours. Compressor replacement or more involved work runs three to five hours depending on your boat’s configuration and how accessible the system is.
The bigger variable is parts availability. Common components for popular marine AC and refrigeration brands usually ship overnight if needed. Custom or older systems sometimes require ordering specialty parts, which can add a few days. We keep common marine parts in stock specifically to avoid delays during peak season.
For installations, plan on a full day or more depending on system complexity. A basic refrigeration unit might install in four to six hours. Full marine HVAC systems with multiple zones can take two days, especially if electrical upgrades are needed.
Saltwater air is the biggest culprit. It corrodes electrical connections, eats through standard metal components, and degrades seals faster than you’d see on land. Even if you’re on a freshwater lake, the humidity and temperature swings on a boat are more extreme than inside a house.
Vibration is the other major factor. Your boat’s engine, wave action, and normal movement shake refrigeration components constantly. Compressor mounts loosen. Refrigerant lines crack at connection points. Electrical terminals work themselves free. Standard residential components aren’t built for that kind of stress.
Then there’s the electrical challenge. Boats run on different power systems—sometimes 12V DC, sometimes shore power, sometimes generators with inconsistent voltage. Marine refrigeration systems need to handle those variations without burning out. Poor installations that don’t account for proper electrical protection fail fast. That’s why using marine-grade components and proper installation techniques matters more on boats than in buildings.
Yes. We service all major marine HVAC and refrigeration brands—Dometic, Cruisair, MarinAire, Frigoboat, Vitrifrigo, and others. We also handle custom systems and commercial marine refrigeration on larger vessels.
Brand doesn’t matter as much as understanding how marine systems work. The fundamentals are similar across manufacturers, but each has quirks in how they’re installed and serviced. With 40 years in the business, we’ve seen pretty much every configuration and know the common failure points for different brands.
If you’ve got an older or discontinued system, that’s not a problem either. We can source parts, fabricate custom solutions when needed, or recommend modern replacements if your system is beyond practical repair. We’ll give you honest advice about whether repair or replacement makes more financial sense for your situation.
Yes, 24/7. We understand that refrigeration failures don’t wait for business hours. Your system quits on a Saturday afternoon when you’re loaded with provisions for a week-long trip. Your AC dies overnight and the cabin is unbearable by morning.
Emergency service means actually responding—not telling you to wait until Monday. We prioritize urgent calls during boating season because we know every day your boat is down is a day you’re not using it. Response time depends on current call volume and your location, but same-day service is standard during season for the Mount Sinai and greater Long Island area.
There’s no upcharge games for after-hours service. You get a free estimate just like regular calls. The goal is fixing your problem fast so you can get back on the water, not maximizing what we can bill during an emergency.
At minimum, get your marine AC and refrigeration checked before each boating season. Spring maintenance catches small problems before they become expensive failures in July. A good service includes checking refrigerant levels, testing electrical connections, inspecting for corrosion, cleaning coils and filters, and verifying the system cools to proper temps.
If you use your boat heavily—weekends all season plus extended trips—consider mid-season service too. Systems working hard in summer heat accumulate dirt, strain components, and develop small issues that turn into breakdowns if ignored.
For boats that sit unused in winter, pre-season service is critical. Seals dry out during storage. Moisture causes corrosion. Small animals sometimes nest in ventilation systems. A thorough check before your first trip prevents surprises. We offer refrigeration maintenance plans that make it easy to stay on schedule without having to remember to call every spring.
Simple repairs—thermostat replacement, refrigerant recharge, cleaning coils—typically run a few hundred dollars. Mid-range repairs like compressor replacement or control board issues run $800 to $1,500 depending on parts and labor. Complex repairs on older systems can approach $2,000 to $3,000.
New marine refrigeration units start around $1,500 to $2,500 for basic systems, up to $5,000 to $8,000 or more for larger capacity or multi-zone setups. Marine AC systems run similar ranges depending on BTU capacity and how many zones you’re cooling. Installation adds to those costs based on complexity.
The decision point: if repairs cost more than 50 to 60 percent of replacement, and your system is over 10 to 12 years old, replacement usually makes more sense. You get modern efficiency, better reliability, and warranty coverage. For newer systems or simple fixes, repair is the obvious choice. We give you honest recommendations either way—we’re not trying to sell you a new system if your current one has years left.
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