Martin County · Treasure Coast

AC Repair & HVAC Installation in Stuart, FL

Maritime Air Co. delivers same-day AC repair, energy-efficient installations, marine HVAC service, and salt-air corrosion protection across Stuart, Sewall's Point, Sailfish Point, and Rocky Point. Family-owned, Class-A licensed, and trusted by Martin County waterfront homeowners and marinas alike.

(772) 236-4277 Schedule Service

License # CAC1824400 5.0 · 37 Google Reviews ZIPs: 34994, 34996, 34997

Why Treasure Coast Trusts Us

Reasons Homeowners & Captains Pick Maritime Air Co.

5-Star Rated
Verified Google reviews
Licensed & Insured
Class-A CAC1824400
Family Owned & Operated
Treasure Coast residents
Residential · Commercial · Marine
Full-spectrum HVAC
Written Estimates
Approved before work begins
Photo-Documented Work
Warranties registered for you
Chamber of Commerce
St. Lucie County member

Stuart HVAC Services

Trusted Air Conditioning Services for Stuart Homeowners

AC Repair in Stuart

Same-day diagnostics for failed compressors, refrigerant leaks, frozen coils, and thermostat issues.

AC Installation in Stuart

Right-sized, energy-efficient systems engineered for Florida humidity and salt-air corrosion.

Duct Cleaning in Stuart

Remove dust, pollen, pet dander and mold for healthier indoor air across coastal homes.

Maintenance Plans in Stuart

Captain's Comfort Club — twice-a-year tune-ups, priority dispatch, and warranty-keeping service.

Local Climate

What Stuart's Climate Means for Your HVAC

Stuart sits in USDA zone 10a with a humid subtropical climate. Summer dewpoints regularly exceed 75°F from June through September, our AC systems run 12–16 hours per day, and August indoor latent loads can double a home's design moisture removal requirement. Homes within 3 miles of the Atlantic or Indian River Lagoon also face chloride-laden salt air that destroys uncoated aluminum condenser coils in 5–8 years. Equipment selection, coil coatings, and dehumidification strategy in Stuart are not the same as inland Florida — and they shouldn't be priced or installed the same way either.

Common HVAC Issues

The Most Common HVAC Problems We See in Stuart

After thousands of service calls across the Treasure Coast, these are the failures we diagnose week after week in Stuart homes. If any of them sound familiar, call us before they turn into a compressor or coil replacement.

Frozen evaporator coils

Florida humidity overworks under-maintained systems — a common Stuart call. We diagnose airflow restrictions, dirty filters, and low-charge issues that cause icing.

Compressor failures from voltage spikes

Summer storms and FPL surges destroy compressors across Stuart. We install whole-system surge protectors and source warranty-replacement Trane, Carrier, and Goodman scroll compressors fast.

Refrigerant leaks at coil joints

Salt air corrodes aluminum coil fins on homes east of US-1. We pressure-test with nitrogen, electronically leak-detect, and re-braze or replace coils with coastal-grade Heresite-coated alternatives.

Sky-high humidity (60%+ indoor RH)

Oversized or single-stage systems short-cycle and never pull moisture out. We right-size with Manual J, install variable-speed equipment, and add dedicated dehumidification when needed.

Mold and mildew on supply registers

Standing condensation, dirty blower wheels, and biofilm in the drain pan all show up as black streaks on ceilings. We sanitize coils, replace drain pans, and add UV-C lights.

Sudden FPL bill spikes

A failing capacitor, dirty condenser coil, or partial duct collapse can quietly add $80–$150/month. Our $89 tune-up catches all three before they snowball.

Local Expertise

Why Stuart Homes Need a Coastal HVAC Specialist

Sewall's Point & Sailfish Point Salt-Air Damage

Estate homes on the St. Lucie and Indian River face year-round salt-air exposure that destroys standard condenser coils in 4–6 years. We install Heresite-coated units and Blygold-treated coils built for 12+ years of coastal life.

Marine HVAC at Stuart Marinas

Sunset Bay Marina, Stuart Harborage, and Hinckley Yacht Services trust our marine division for Cruisair and Dometic chiller repair, raw-water pump replacement, and Barnacle Buster condenser flushes.

Humidity & Mold in River-Adjacent Homes

Stuart's rivers, canals, and tropical landscaping push indoor humidity above 60% in many homes. We design dehumidifier-integrated systems, UV air purifiers, and proper duct sealing to keep mold out of HVAC components.

Historic Downtown & Mid-Century Homes

Older Stuart homes often have decades-old equipment, undersized returns, and zero zoning. We perform Manual J/D load calcs and recommend mini-splits or zoned systems to fix comfort issues at the root.

Neighborhoods We Serve in Stuart

Downtown Stuart
Sewall's Point
Sailfish Point
North River Shores
Rocky Point
Krueger Creek
Snug Harbor
Locks Landing
Mariner Sands
Willoughby
Hanson's Landing
Old Palm City

Call (772) 236-4277 Schedule Service

Marine HVAC in Stuart

Dockside Marine Air Conditioning Service for Stuart Boaters

Serving Sailfish Marina of Stuart, Sunset Bay Marina, Loggerhead Marina Stuart, Pirates Cove Resort & Marina, Manatee Pocket and every private dock in Stuart. Class-A licensed and EPA 608 certified — we diagnose, repair, and replace every major marine HVAC brand with the saltwater corrosion expertise your vessel demands.

Marine AC Repair

Full-spectrum dockside marine HVAC service & emergency response.

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Cruisair Repair

Self-contained, split-gas, and chilled-water Cruisair systems.

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Dometic Marine AC Repair

Dometic Turbo, Emerald, SMX controls, and chiller diagnostics.

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Marine Chiller Systems

Chilled-water yacht HVAC, fan-coil units, zone controls.

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Barnacle Buster Service

Closed-loop seawater coil descaling to restore cooling capacity.

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Marine Water Pump Replacement

March, Cruisair & Headhunter raw-water pumps swapped dockside.

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Boat AC Down?

Same-day dockside response in Stuart.

(772) 236-4277

Why Maritime Air Co.

Why Stuart Homeowners Choose Maritime Air Co.

Class-A Licensed (CAC1824400)

Florida Class-A Certified Air Conditioning Contractor with no job-size limitations — residential, commercial, and marine.

Family-owned, Treasure Coast based

Local Port St. Lucie shop. You speak to the owner, not a national call center.

5.0 ★ on Google + Nextdoor Fave 2025

Hundreds of neighbors trust us. Read every review before you book — we publish them all, good and bad.

10-year parts & labor warranty

Standard on qualifying new installs. We register every system the day it's commissioned.

Marine HVAC specialists

Cruisair, Dometic, Webasto chillers and air handlers. Dockside service across every Treasure Coast marina.

Upfront flat-rate pricing

You approve the price before we turn a wrench. No surprise add-ons, no commission-driven tech upsells.

Our Work

Recent Stuart Area Projects

A sample of installs and repairs we've completed near Stuart.

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Coil Cleaning

Reviews

What Stuart Customers Say

Real Google reviews from Treasure Coast homeowners, business owners, and captains.

5.0

37 Google Reviews

“My highest recommendations for Devon and the Maritime Air team — thorough, honest, and on time. They explained everything in plain language and didn't push any unnecessary upsells.”

Spencer Fuller

May 2026

Google

“Devon has provided thorough maintenance and excellent service. Truly family-owned care — they treat your home like it's their own. Highly recommend for Treasure Coast homeowners.”

Oh Canada

March 2026

Google

“Working with Devon on my HVAC system was a great experience from start to finish. Fair, clean install, and the system has been running perfectly through Florida summer heat.”

David Alker

February 2026

Google

Read all Google reviews

FAQ

Stuart HVAC Questions, Answered

Do you offer same-day AC repair in Stuart, FL?+

Yes — Stuart is 25 minutes from our Port St. Lucie shop, and we routinely reach homes from Sewall's Point to North River Shores within 2–3 hours for emergency AC calls. Free phone diagnostic before we dispatch.

Do you service Sewall's Point and Sailfish Point waterfront homes?+

Yes. Waterfront homes on Sewall's Point, Sailfish Point, and the St. Lucie River endure relentless salt-air corrosion. We install marine-grade condensers and offer salt-air maintenance contracts specifically designed for Martin County estates.

Can you repair marine air conditioning at Sunset Bay Marina and Stuart Harborage?+

Absolutely. Marine HVAC is a core specialty — we service Cruisair, Dometic, Webasto, and chiller systems at Sunset Bay Marina, Stuart Harborage, Hinckley Yacht Services, and along the entire Stuart waterfront.

What's the typical cost of AC replacement in Stuart?+

Most Stuart homes fall in the $6,000–$11,000 range for a complete high-SEER2 system installed with permits and 10-year warranty. Estate homes and multi-zone systems quote higher. Free in-home estimates with no upsells.

Do you offer commercial HVAC for downtown Stuart and Cleveland Clinic Martin Health?+

Yes — Class-A licensed (CAC1824400) for any size commercial job. We service rooftop units, mini-split arrays, and small commercial chillers throughout downtown Stuart, US-1 corridor, and the medical district.

Knowledge Graph

Every honest repair starts with the same measurements. These are the diagnostic guides our technicians use in the field — read them before you accept a diagnosis.

Diagnostic