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Langston’sHeating & Air

Heating Repair & Installation

Heating that works on the one cold week Jacksonville actually gets

Florida heating systems sit idle for ten months and then get asked to run flat out. That is exactly why they fail on the first cold night — and why the failure is almost always findable in a fall check instead.

Call (904) 467-1100Request a visit

Mon–Sat, 8:00 AM – 8:00 PM

Why Northeast Florida homeowners call Langston’s

You get the owner

Not a dispatcher, not a rotating crew. The person who diagnoses it is the person accountable for it.

Price before the work

Flat-rate repair pricing approved by you before a single part comes off the truck.

Licensed & insured in Florida

Florida Certified Mechanical Contractor CMC1251311, EPA 608 Universal certified, insured on every job.

Local, across 8 counties

Jacksonville-based, covering eight Northeast Florida counties — not a franchise routing your call out of state.

Sound familiar?

If any of this is happening, it is worth a call

You do not need to know what failed. Describing the symptom is enough to get a real answer on the phone.

(904) 467-1100
  • Heat pump blows cool air in heating mode
  • Auxiliary or emergency heat runs constantly
  • Furnace ignites then shuts down after a minute
  • Burning smell that does not clear after the first run
  • Outdoor unit iced over in winter and not defrosting
  • Loud bang on ignition

What the visit includes

The part most quotes leave out: what you actually get

Four things that separate a proper job from a parts swap. All four happen on every call.

1

Safety checks first

On gas equipment, heat exchanger inspection and combustion safety come before anything else. That is not negotiable.

2

Defrost and reversing valve diagnosis

The most misdiagnosed failure in Florida heating. It gets tested, not assumed.

3

Auxiliary and strip heat testing

Strip heat that stays energized when it should not is a quietly enormous power bill. Sequencers and staging get verified.

4

Thermostat staging set correctly

A miswired or mis-configured thermostat can force emergency heat for an entire season. It gets checked and corrected.

Questions

Heating Repair & Installation, answered plainly

Why does my heat pump blow lukewarm air?

That is often normal — a heat pump delivers air cooler than a furnace by design. If it is genuinely not warming the house, the likely causes are a stuck reversing valve, low charge, or a defrost board failure. All three are testable.

Do you service gas furnaces?

Yes — gas and electric furnaces, heat pumps, and air handlers with strip heat.

My emergency heat light stays on. Is that bad?

It means the system is heating with resistance strips instead of the heat pump, which can multiply your heating cost. It is worth a service call.

Request a service visit

Takes about a minute. You get a callback to confirm a real arrival window.

No obligation. Your details are used to schedule your visit and nothing else — see our privacy policy.

What customers say

The reviews that matter are the ones about what actually got fixed

Not stock photos and slogans — specific jobs, specific outcomes, from homeowners and property managers across Northeast Florida.

5.0

38 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

Google review · AC service

“The technician was very prompt and immediate found the issue. My air was back working in no time.”

Carlynn Coleman

Google review · AC repair

Read all 38 reviews on GoogleLeave a review

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Get it handled

Need heating repair & installation? Start with a phone call.

Describe what the system is doing. You will get a straight answer about what it likely is, what the visit costs, and when someone can be there.

Call (904) 467-1100Request a visit online

Mon–Sat, 8:00 AM – 8:00 PM · Calls answered by the owner, not a call center.

What happens when you call

  1. 1

    You describe the symptom

    Temps, noises, when it started. Two minutes.

  2. 2

    You get a real window

    An actual arrival time, not a twelve-hour block.

  3. 3

    You approve the price

    Diagnosis first, flat-rate number second, work third.

Call nowBook online