“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
Lennox Certified · Port St. Lucie, FL
Lennox AC Repair in Port St. Lucie, FL
Maritime Air Co. is a factory-trained Lennox repair contractor serving Port St. Lucie and the entire Treasure Coast. We diagnose, repair, and warranty-replace Lennox compressors, control boards, coils, and condenser fan motors — same-day, with OEM parts on the truck.
CAC1824400 Lennox factory-trained Serving Port St. Lucie same-day
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
About Lennox Equipment
Why Lennox Systems Need a Lennox-Certified Tech
Lennox builds the highest-efficiency residential systems in the industry — the XC25 hits 26 SEER2 — but they also require Lennox-specific iComfort tools and parts. We service Signature (XC/XP), Elite (16ACX, EL16XC1), and Merit series across the Treasure Coast.
Port St. Lucie Climate Context
Lennox in Port St. Lucie — What's Different Here
Port St. Lucie sits in St. Lucie County along Florida's Treasure Coast, where year-round humidity and chloride-laden salt air punish residential and light-commercial HVAC equipment. We've serviced Lennox systems in every Port St. Lucie ZIP code — from beachfront condos to inland developments — and we know exactly how Lennox equipment fails in this climate.
Most Common Lennox Failures
Top Lennox Repairs We See in Port St. Lucie
iComfort S30 thermostat 'Equipment Disabled' faults
iComfort communication lockouts usually trace to a failed outdoor control board or corroded ABCD wire. We carry replacement boards and Lennox iComfort diagnostic apps.
XC25 inverter board failures from voltage surges
Lennox inverter boards are extremely sensitive to FPL surges. We install whole-system surge protectors and source warranty replacement boards through our distributor.
SunSource solar-ready inverter quirks
Hybrid solar-ready Lennox systems require specific PV interconnect diagnostics. We're trained on the inverter handoff sequence and grid-tie verification.
What's Included
Lennox Services We Perform in Port St. Lucie
- Lennox compressor diagnostics & warranty replacement
- Lennox refrigerant leak detection & repair
- Lennox condenser coil cleaning & coastal coating
- Lennox control board & thermostat diagnostics
- Lennox variable-speed / inverter system service
- Lennox preventative maintenance & tune-ups
- We stock iComfort S30/E30 thermostats, SureLight ignition modules, ECM blower controls, and SilverShield-coated coil replacement parts. Variable-capacity compressor warranty claims go through our Lennox distributor.
Need Lennox service in Port St. Lucie today?
Free phone diagnostic. Same-day dispatch. OEM parts on the truck.
Reviews
What Port St. Lucie Lennox Owners Say
5.0
37 Google Reviews
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
“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
Our Work
View all projects Recent Port St. Lucie Area Projects
Real installs and repairs we've completed across the Treasure Coast.
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FAQ
Lennox Repair in Port St. Lucie — Common Questions
Are you factory-trained on Lennox equipment?+
Yes — our technicians complete Lennox factory training and we maintain distributor relationships for OEM parts and warranty processing. We work on every Lennox model installed in Port St. Lucie over the last 20 years.
How fast can you get to my Port St. Lucie home for a Lennox repair?+
Same-day for Port St. Lucie — typically 2–4 hours from your call during business hours. Captain's Comfort Club members get priority dispatch and no overtime fees after hours.
Do you stock Lennox parts in your truck?+
Yes — we carry the most common Lennox parts: capacitors, contactors, control boards, blower motors, TXV valves, and surge protectors. Larger parts (compressors, coils) are warranty-sourced through our Lennox distributor in 24–48 hours.
Will my Lennox warranty still be valid if you service it?+
Absolutely. We're a licensed Class-A HVAC contractor (CAC1824400) authorized to perform Lennox warranty work. We document every visit and register parts replacements correctly.
How much does Lennox repair cost in Port St. Lucie?+
Phone diagnostic is free. In-home diagnostic is $89, applied to any repair. Common Lennox repairs (capacitor, contactor, fan motor) run $185–$595 flat-rate. Compressor and coil replacements are quoted after diagnostic — usually warranty-covered if the system is under 10 years old.
Knowledge Graph
Related HVAC Diagnostics
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
Static Pressure: What It Is and Why It Matters
Static pressure is the resistance your blower has to overcome to move air through the duct system. Total External Static Pressure (TESP) is …
Read diagnosticDiagnostic
Delta-T: Return-Air Minus Supply-Air
Delta-T is the temperature drop across the indoor coil — return-air temperature minus supply-air temperature. A healthy Florida system runs …
Read diagnosticDiagnostic
Superheat: Reading Your Evaporator's Health
Superheat is degrees Fahrenheit that refrigerant vapor sits above its saturation temperature at the suction pressure. On a fixed-orifice sys…
Read diagnosticDiagnostic
Subcooling: The TXV Charge Measurement
Subcooling is degrees Fahrenheit that liquid refrigerant sits below its saturation temperature at the liquid-line pressure. On a TXV system …
Read diagnostic