AC & Heating · Commercial Refrigeration · Northeast Florida
Langston’s Heating & Air Conditioning repairs, replaces and maintains air conditioners, heat pumps and commercial refrigeration across Duval, Clay, St. Johns, Nassau, Baker, Bradford, Putnam and Flagler counties. The owner is a state-licensed mechanical contractor, and you get a written quote before any work starts.
You’re in the right place
Most of our calls start with one of these eight problems. Tap the one that sounds like yours.
Before you call anybody
Pick what you’re seeing to get a straight answer about what it usually turns out to be. Nothing is stored and nothing gets sent anywhere.
Why we measure first
An air conditioner pulls moisture out of the house only after it has run long enough for the indoor coil to get cold and stay cold. In Florida humidity, that takes several minutes of steady running.
An oversized unit cools the air too fast and shuts off before the coil ever starts dripping. The house hits 74° and still feels sticky. The unit starts and stops all day, and the compressor wears out years early.
That’s why we size equipment with a load calculation and check static pressure and refrigerant charge before recommending anything. We don’t just match whatever tonnage was there before.
How a job runs
Tell us what the system is doing. Your answers decide what parts go on the truck, so most repairs get done on the first visit.
Pressures, superheat and subcooling, amp draw, static pressure. We show you the reading that proves the diagnosis. The diagnostic is $129, and we waive it if you go ahead with a repair over $250.
What failed, what it means and what it costs, before any work starts. When replacement really is the right call, financing is available through Synchrony, GreenSky or Wisetack.
What we do
Who the truck works for
Repairs, replacements and maintenance, with the owner on the job.
Turnover inspections, tenant calls and priority scheduling. FCAA member.
HVAC condition reports for buyers, agents and investors. JAXREIA member.
Restaurants, stores, churches and offices: HVAC and refrigeration.
Why Langston’s
In their words
★★★★★ 5.0 from 36 Google reviews
“Mr Gary is a one of a kind gem if you need air conditioning service or repairs he’s the guy to go to. Mr Gary is very thorough and persistent in locating the issue and is upfront and honest about his findings.”
Susan Hoyle“The technician was very prompt and immediate found the issue. My air was back working in no time. I would most definitely recommend this company for ALL AC needs.”
Carlynn Coleman“Excellent service. The technician was very professional and highly knowledgeable. They quickly diagnosed the issue and fixed my AC. I will definitely use them again!”
Stenley BrunoWhere the truck goes
A 1960s block home in Arlington, a new build in Nocatee and a beach house in Fernandina each wear an AC out differently: salt air, hot attics, original ductwork. We know what to look for in each.
Straight answers
The residential diagnostic is $129. If you go ahead with a recommended repair over $250, we waive it. Commercial diagnostics are $149, waived on repairs over $300.
Monday through Saturday, 8 AM to 8 PM. Call and we’ll give you the earliest time we can be there.
Yes. Replacements can be financed through Synchrony, GreenSky or Wisetack, or through your own credit union’s home improvement loan.
Twice a year: before summer and before winter. Our systems run almost year-round here, so drain lines and coils clog faster than in most of the country.
We show you the readings and give you both prices in writing. Age, refrigerant type and how much the repair costs compared with the unit’s value usually decide it. We’ll tell you plainly which way we’d go.
Yes: walk-in coolers and freezers, reach-ins, prep tables and ice machines. See commercial refrigeration.
AC, heat pumps and commercial refrigeration across Northeast Florida.
Need help now? Calling is the fastest way to get on the schedule.
Call Now · 904-467-1100Monday–Saturday · 8 AM–8 PM
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