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Langston’sHeating & Air

AC & Heating Maintenance

The visit that keeps you off the emergency schedule

Nearly every no-cool call in July was preventable in April. Capacitors weaken before they fail. Drain lines clog before they overflow. Maintenance is not an upsell — it is the cheapest hour you will spend on your system all year.

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
  • You have not had the system serviced in over a year
  • The drain line has backed up before
  • System is under warranty and needs documented service
  • Rental or managed property that cannot afford a surprise failure
  • You want the failure found in spring, not in August

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

Coils cleaned, drain cleared

The condensate drain is the number one cause of summer shutdowns in Florida. It gets flushed and treated, every visit.

2

Electrical and capacitor testing

Capacitors are measured against rated microfarads, not eyeballed. Contactors, relays, and amp draw checked against spec.

3

Refrigerant charge verified

A system running low is losing efficiency long before it stops cooling. Charge is checked properly, not topped off blindly.

4

A written condition report

You get the readings and a plain list of what is fine, what is aging, and what needs attention — with no pressure attached to any of it.

Questions

AC & Heating Maintenance, answered plainly

How often should I have maintenance done?

Twice a year in this climate — spring before the cooling load hits and fall before heat season. Heat pumps run year round and benefit most from both visits.

Do you offer a maintenance plan for rental properties?

Yes. Property managers are a large part of this business. Multi-property scheduling and per-unit condition reporting are available.

Does maintenance keep my warranty valid?

Most manufacturer warranties require documented annual service. You get the documentation either way.

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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Load-calculated sizing, a written quote with the model numbers on it, and an install that actually gets commissioned.

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Heating Repair & Installation

Heat pumps, gas furnaces, and electric strip heat — diagnosed properly on the two weeks a year it matters.

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Get it handled

Need ac & heating maintenance? 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