Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
HVAC Company in St. Augustine, FL
Dalton Heating & Air handles HVAC work across St. Augustine, FL, where salt air, humidity, and a housing stock that runs from 19th-century downtown homes to newer developments off State Road 16 all put different demands on cooling and heating equipment. Most St. Augustine homeowners call us for two reasons: an AC system that quit in August, or a heat pump or furnace that needs honest repair or replacement. The price is in writing before any work starts, on every job, without exception. Call (361) 306-9515 for a free estimate and a straight answer.
Why St. Augustine Homes Are Different
St. Augustine’s climate punishes HVAC equipment in ways inland Florida cities rarely see. The Atlantic is a mile or two from most neighborhoods, which means persistent salt in the air. Condenser coils, fan motors, and electrical connections corrode faster here than they do 30 miles west. We see aluminum fins that have turned to powder on units only six or seven years old. When a technician from Dalton Heating & Air shows up in St. Augustine, the first thing they check is the coil condition near the beach side of the house – that’s where the damage concentrates.
Housing stock matters too. The historic districts around downtown – Lincolnville, the neighborhoods off King Street and Cordova Street – hold homes built before central air existed. Many have crawlspaces, low attic clearance, or original plaster walls. Ductwork in those houses is often a patchwork of decades, with leaks and sags that force the AC system to work harder than it should. Newer subdivisions on the north side and around St. Augustine Beach are different: tighter construction, but also tighter attic spaces that hold heat and push temperatures well past 120 degrees in July. Technicians working those attics plan shorter intervals, hydrate constantly, and stage parts outside to keep them from heat-soaking.
Our Main St. Augustine Services
Three services make up the bulk of what we do in St. Augustine: AC repair, heat pump installation, and furnace repair. Each has its own page with specific pricing and job details. Here is what each involves.
AC Repair in St. Augustine
An AC system in St. Augustine works harder than almost anywhere in Florida: long cooling seasons, steady humidity, and salt exposure that ages components fast. The most common calls we run are capacitor failures, refrigerant leaks at the A-coil, and contactor burnouts – all of which present as warm air or no air at all. Every repair comes with a written guarantee for a full year, and if it fails in that time, we return at no charge. Read the full breakdown on our AC Repair in St. Augustine page.

Heat Pump Installation in St. Augustine
Heat pumps suit St. Augustine’s mild winters and humid summers, but sizing is everything. Undersized units run constantly in August. Oversized ones short-cycle and leave humidity in the air. We measure the home, not guess at it: square footage, ceiling height, window exposure, and attic insulation all go into the load calculation before we quote a price. The quote is written, fixed, and includes the full install. Details on Heat Pump Installation in St. Augustine.

Furnace Repair in St. Augustine
St. Augustine gets cold snaps – especially December through February – when a furnace that sat unused for nine months decides not to ignite. Common failures here are dirty flame sensors, failed igniters, and cracked heat exchangers on older units. A cracked heat exchanger is a carbon monoxide risk and means replacement, not patchwork. Our technicians check it on every furnace call as standard practice. If the repair fails within the year, the second visit is free. See Furnace Repair in St. Augustine for the full scope.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in St. Augustine
Our technicians are factory-trained to work on nine major residential HVAC brands, and in St. Augustine we commonly service Rheem, York, and Daikin systems, plus Bryant units in newer construction. Most common parts are stocked on the truck, which cuts down trips across the Bridge of Lions or out to the beach. See our brands for the full list.
Pricing for HVAC Company in St. Augustine, FL
These are the ranges we quote in St. Augustine. The price for your job is written down before any work starts, and it does not change at the door.
| Service | Typical range in St. Augustine |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Annual tune-up | $80 – $200 |
What pushes a St. Augustine repair toward the upper end is almost always salt damage: a condenser fan motor that has rusted to the housing, a coil that has degraded past cleaning and needs replacement, or a control board with corroded terminals. The Garrison Standard means the price you see in writing covers the job. It does not grow when the technician is halfway through the work.
Neighborhoods We Serve in St. Augustine
We run service across the whole St. Augustine area, from the historic grid downtown to the newer subdivisions north of town and the beach communities east of the Intracoastal. Response time typically runs same-day for breakdown calls placed before noon, and next morning for calls later in the day.
- Lincolnville
- St. Augustine Beach
- Anastasia Island
- Vilano Beach
- Palencia
Service Area – Cities Near St. Augustine
Our St. Augustine based crews also cover nearby areas when scheduling allows. We serve homeowners in Jacksonville, FL, Miami, FL, Tampa, FL, and Orlando, FL. Dispatch and scheduling are coordinated from the brand’s Miami office; the technicians serving St. Augustine work locally in this market.
Serving St. Augustine, FL - Our Local Coverage Area
We’re based in the St. Augustine area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in St. Augustine
Most St. Augustine calls get same-day service if they come in before noon. Later calls are typically scheduled for the next morning. We answer the phone with a live person 24/7. Call (361) 306-9515 and you will get a straight answer on timing, not a voicemail queue.
St. Johns County requires permits for most HVAC installations and some major repairs. We handle the permit paperwork as part of the job when it is required. For repairs that fall under routine service, no permit is needed, and we tell you which category your job falls into before work begins.
Yes. Every repair carries a written one-year guarantee under the 365-Day Done Right Promise. If the repair fails within that year, we return at no charge. The guarantee is not an upgrade or an add-on. It is part of every service call, in St. Augustine and everywhere else we operate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What St. Augustine Customers Say
"Changed the filter size and added a better filter rack. Simple and useful advice."
- Rhonda C."Honest, direct people. Told me what the furnace needed and nothing more, and the bill matched."
- Eliza S."Coil cleaning and a refrigerant check before summer. AC has never been this cold."
- Marty D.







Before
After
Before
After
Before
After