Marine systems, serviced at your slip
Steadfast Marine Systems services the air conditioning, refrigeration, and electrical systems aboard yachts from 52 to 200 feet. We come to your slip at Seattle’s marinas, and what we do aboard private vessels stays private.
Steadfast Marine Systems services four disciplines aboard yachts of 52 to 200 feet: air conditioning and climate control, marine refrigeration, yacht electrical, and emergency response. All work happens dockside at the vessel’s slip in Seattle’s marinas, performed by an owner-operated, EPA Section 608 certified team.

Even, quiet climate through a Seattle summer and a damp winter alike. We service chilled-water and self-contained systems end to end, and we document what we find for your engineer.
- Chilled-water systems
- Self-contained units
- Controls and thermostats

Provisions hold temperature, ice machines make ice, and the wine stays exactly where you set it. Our technicians are EPA Section 608 certified for refrigerant handling, and they diagnose before they replace.
- Galley refrigeration and freezers
- Ice machines and wine storage
- EPA 608 refrigerant handling

Shore power, distribution, inverters, chargers, and battery banks, diagnosed methodically and documented clearly for the next person who opens the panel.
- Shore power and distribution
- Inverters and batteries
- System controls

Systems fail on their own schedule, and a vessel with guests aboard cannot wait for Monday. Emergency and after-hours response brings a technician to the slip to stabilize the system and plan the repair.
- After-hours response
- Dockside triage at the slip
- HVAC, refrigeration, and electrical
We serve Lake Union, Westlake, Eastlake, Elliott Bay, and Shilshole Bay, and we are expanding across Puget Sound toward Tacoma, Gig Harbor, Poulsbo, and Bremerton. See the Seattle service area.
Arrange service
Tell us the vessel, the marina, and what the system is doing. Jose will coordinate the visit directly with you or your captain.