Weekday service call
$85Monday–Friday
8:00 AM–5:00 PM
Marine air conditioning
Cool cabins need airflow and seawater flow.
Marine A/C adds an entire water circuit to the comfort equation. Sunset Air Conditioning & Heating checks the cabin side, seawater side, controls, drainage, and refrigeration system before recommending a repair, maintenance, or descale.
Service-call feeIncludes the first labor hourAfter the first hour$125 per labor hourRoutine maintenanceUses the same hourly structure
Marine service-call pricing
The service-call rate covers the first hour.
Choose the time window that applies when the call is accepted. The applicable fee includes the first labor hour for one marine A/C system.
Marine labor: first hour included, then $125 per hour
Routine marine maintenance uses this same hourly structure. Parts, refrigerant, materials, descaling, difficult access, and work on additional systems are separate.
Evenings & weekends
$185Weekdays · 5:00–9:00 PM
Weekends · 8:00 AM–9:00 PM
Overnight service call
$285Every day
9:00 PM–8:00 AM
ASAP marine A/C emergency response
$500Any time · HVAC or marine A/C only
When accepted and confirmed
What the $500 ASAP HVAC response means
Once the emergency request is accepted and confirmed, Sunset Air will get en route as soon as possible and will typically arrive within one hour or less. This is a priority-response target, not a guaranteed arrival time. Traffic, weather, distance, access, safety, technician availability, and active emergencies can affect timing. If that response window cannot reasonably be met, the customer is told before the emergency response is confirmed.
Life-safety emergency? Call 911. Sunset Air can respond only to urgent HVAC or marine A/C problems. For fire, smoke, a carbon-monoxide alarm, a suspected gas leak, a medical emergency, dangerous electrical conditions, or any immediate threat to people or property, leave the area if necessary and contact 911, the fire department, or the appropriate utility. Do not wait for an HVAC technician.
Marine rates apply to one system and are based on the time window when the call is accepted. Marine maintenance is time-based because system count, shared seawater circuits, access, and onboard conditions vary by vessel. Availability is not confirmed until Sunset Air accepts the call.
Follow the water
A cooling problem can begin anywhere in the seawater path.
The pump may be running and the system may still have poor flow. Looking at the complete path prevents a dirty strainer, closed intake, airlock, weak pump, fouled condenser, or restricted discharge from being mistaken for a refrigerant problem.
01
Intake & seacock
Seawater must enter through an open, unobstructed intake.
02
Sea strainer
The basket catches grass, shells, growth, and debris before they reach the pump.
03
Seawater pump
The pump must stay primed and move enough water for every operating A/C unit.
04
Condenser or chiller
Heat from the cabin transfers into the seawater circuit here.
05
Overboard discharge
Visible discharge confirms water is leaving the circuit, but strength matters too.
Book the right marine visit
Known fault means service. A working system can receive maintenance.
Marine service call
Choose service for no cooling, no water discharge, a pump that will not run, recurring error codes, leaks, ice, breaker trips, or a zone that is not operating correctly.
Marine maintenance
Choose maintenance when the equipment is operating and needs filter, drain, strainer, water-flow, controller, electrical-condition, and performance checks. Routine maintenance follows the same hourly billing shown above; descaling, parts, and materials are separate.
Descale service
A descale is a planned seawater-circuit cleaning based on flow, operating symptoms, growth conditions, service history, system layout, and access—not an automatic refrigerant repair.
Marine air quality
Freshen the cabin without simply covering up the smell.
Closed cabins, humidity, bilges, cooking, pets, diesel, and long storage periods can leave boat air stale. These options serve different spaces—from an entire A/C zone to one head, berth, vehicle, room, or camper—so the right choice starts with where and when you need it to work.
AIRLOCK · Installed marine A/C air treatment
AIRLOCK One
A compact device installed at a marine A/C air handler. When the blower moves air, bipolar ions travel with that airflow into the cabin instead of relying on a separate room unit.
- Treats the zone served by the connected air handler
- Designed for enclosed marine environments and humid salt air
Best fit: Boats with ducted marine A/C that need a whole-zone option while the system fan is running.
AIRLOCK · Portable marine zone purifier
AIRLOCK Voyage
A plug-in unit with its own fan for areas where the boat's A/C does not reach or is not running. The manufacturer describes a combination of UV-C, photocatalysis, and ionization for small enclosed zones.
- Runs from 12-volt DC or 100–240-volt AC power
- Moves easily between a head, galley, berth, or pet area
Best fit: Small problem areas, boats without ducted A/C, or targeted support between trips.
Aerus · Portable personal-space air treatment
Air Scrubber Mobile by Aerus
A lightweight three-speed unit using ActivePure technology and carbon brushes. It is made for a small personal space and can travel with you instead of staying tied to one A/C system.
- Portable and plug-and-play with AC and 12-volt power options
- Useful in a boat cabin, room, car or truck, RV, or camper
Best fit: Customers who want a compact unit they can move between several small spaces—or purchase separately for each space.
More useful cabin-air options
Smaller upgrades can solve a specific moisture, odor, or monitoring problem.
Installed at the air handler
UV-C coil-protection light
Keeps the light focused on the evaporator and drain-pan area where damp surfaces can support buildup.Best fit: Compatible marine air handlers with enough safe mounting space.Ask about this optionDockside humidity control
Compact cabin dehumidifier
Pulls moisture from a closed cabin while the boat is connected to suitable shore power and the condensate can be managed safely.Best fit: Boats that sit closed up and develop persistent dampness or musty odors.Ask about this optionReturn-air filtration
Odor-control filter upgrade
Adds odor-adsorbing media where the air-handler design and available airflow can support it.Best fit: Cabins dealing with cooking, pet, smoke, or general stale-air odors.Ask about this optionSimple cabin monitoring
Digital humidity monitor
Makes it easier to see when a closed cabin is staying too humid instead of waiting for odor or condensation to appear.Best fit: Seasonal boats, rentals, and vessels left unattended between trips.Ask about this optionCaptain & boat-owner check
Six useful checks you can make safely before calling.
These are not repair steps. They are the observations that help separate a power or control fault, cabin-airflow problem, seawater-flow problem, or one-zone issue before Sunset arrives.
Observe—do not disassemble.Stop if there is no discharge, the breaker trips again, you smell burning, there is an active seawater leak, or water is near electrical equipment. Do not open panels, refrigeration components, or unfamiliar seacocks and strainers.
01
Controller, breaker & exact fault
Command the affected zone to COOL, lower the setpoint, and allow the normal start delay. Record the display, fan response, exact code, and whether the fault returns. Check only the labeled A/C breaker—do not keep resetting one that trips.
Tell us: The zone name, setpoint, exact code, and whether the controller went blank, restarted, or shut down again.02
Airflow & cooling by zone
Compare the affected cabin with another zone. Listen for the blower, feel the supply air, and make sure the return grille and filter are not blocked. Do not remove panels.
Tell us: Which cabin is affected, strong/weak/no airflow, and whether the air feels cool, room-temperature, or warm.03
Overboard discharge
While the zone is calling, look from a safe position for the correct overboard discharge. Note whether the flow is steady, weak, pulsing, or absent.
Tell us: Which outlet you checked and what the flow does. Shut the A/C off if there is no discharge.04
Intake & closed strainer
If you know the system, confirm the correct A/C seacock is open and visually inspect the closed strainer bowl for grass, shells, slime, debris, or air. Do not open unfamiliar fittings.
Tell us: Visible debris, air bubbles, or a clear photo of the closed strainer and known seacock position.05
Pump & shared-system clues
Listen for the seawater pump when a zone starts. Note silence, humming, cycling, unusual noise, or a pump that runs without moving water. Compare other zones that share the pump.
Tell us: Whether every zone faults or only one, plus any recent haul-out, strainer cleaning, or loss of prime.06
Condensate, leaks & service history
Look at accessible drain pans, hoses, fittings, and the nearby bilge area for standing water, dripping, salt tracks, or odor. Do not disassemble equipment.
Tell us: Where water appears, the last known maintenance or descale, and any recent shore-power or service change.Stop the system and call
No overboard discharge, a breaker that trips again, burning odor, active seawater leak, water near electrical equipment, or a pump running dry.
Helpful with the request
Boat location and slip, affected zone, exact error code, controller photo, equipment-label photo, and a clear photo of the closed strainer or problem area.
What happens next
Send what you know. Sunset Air will review it, ask only for anything missing, and confirm whether the visit should be service, maintenance, or a descale.
What is a marine A/C descale?
It cleans the inside of the seawater circuit where a brush cannot reach.
A professional descale isolates the raw-water circuit and circulates a purpose-made marine descaling solution through the condenser or chiller water path. The solution loosens or dissolves marine growth, calcium, lime, rust, and mineral deposits that restrict flow and reduce heat transfer. The circuit is then flushed with fresh water, returned to normal operation, checked for leaks, and verified for discharge flow and cooling performance.
This is not the same as cleaning the strainer, and it is not a reason to pour household acid or an unapproved chemical into the system.
When it may be time
No honest schedule fits every boat.
Water temperature, saltwater growth, run time, vessel use, system design, and past service all matter. These clues justify a closer look:
- Overboard discharge remains weak after the strainer and intake are confirmed clear
- Recurring high-pressure or seawater-flow faults
- Cooling performance has slowly dropped even though cabin airflow is good
- The condenser, chiller, or seawater circuit has an unknown service history
- The vessel lives in warm saltwater or sees heavy growth and long run time
- A clean strainer and running pump still do not produce normal system flow
The Sunset of the Month
Your sunset could cover the next A/C visit.
Send us your original photo. Each month, one standout image lets the winner choose a standard boat or home A/C maintenance, or a $150 Sunset Air service credit.
Monthly prizeBoat or home A/C—or $150 creditWinner chooses
Request marine service
Start with the basics.
A short description, your location, and the best way to reach you are enough to begin. We’ll ask for anything else we need.
One request, sent directly to Jobber
See all residential and marine services This is Sunset Air's official Jobber request form. Submitting it creates the request in Jobber so it cannot be stranded only in the website inbox or an email notification.
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Send the details below and Sunset Air will follow up to confirm scheduling.
Your selectionMarine A/C servicePlease mention this selection in the request details if the form asks what you need.
Submitting this form creates the request directly in Sunset Air's Jobber account. It is a request—not a confirmed appointment. Open the same Jobber form in a new window . For urgent or same-day availability, call 850-501-8081.