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 Hilliard, FL
Hilliard sits in Nassau County where summer heat and humidity punish an air conditioner for months at a stretch, and the occasional cold snap makes a working furnace more than a nice-to-have. Homes here range from older wood-frame houses to newer construction on larger lots, which means the HVAC work we do in Hilliard never follows one script. If your system is struggling, call Dalton Heating & Air at (361) 306-9515 and we’ll tell you exactly what the repair looks like, in writing, before we touch anything.
Why Hilliard Homes Are Different
Hilliard’s position in the northeast corner of Florida, close to the Georgia line, means systems here work against real temperature swings, not just a flat, predictable heat. A heat pump or air conditioner that coasts through a Marion County summer gets pushed harder when a Hilliard winter dips toward freezing and the auxiliary heat kicks in more often than the equipment’s age suggests it should. That dual workload changes how we diagnose problems here. We check the system’s cooling performance and its heating side at the same visit, because a unit that cools fine but struggles to hold heat is a common Hilliard pattern.
Much of Hilliard’s housing stock includes homes with crawlspaces and older duct runs. Ductwork in a crawlspace absorbs moisture, and in this part of Florida, that moisture breeds mold inside the ducts faster than homeowners expect. Rotted flex duct, loose connections, and return leaks are routine findings on Hilliard service calls, and they change what a repair actually costs because the fix may include resealing a run, not just replacing a part. Newer subdivisions on the west side of town tend to have tighter duct design and more uniform equipment, but the age and sizing still vary enough that we treat every Hilliard job as its own job, not a template.
Our Main Hilliard Services
The two calls we take most in Hilliard are a failed air conditioner in the middle of a Nassau County summer and a furnace that will not fire on the first cold night of the year. Both are covered below, plus heat pump installation for the homes that need a full system replacement.
AC Repair in Hilliard
Most AC repairs in Hilliard start with a compressor that won’t kick on or a system blowing warm air by early afternoon. With high humidity here, a struggling system also leaves the house damp, not just hot, so the problem shows up fast. We diagnose the issue, price the repair in writing before any work starts, and carry common parts on the truck to cut down on return trips. A full year written guarantee comes with every repair, and if the same failure comes back in that window, the second visit is free. For the full picture on what we fix and what it costs, see AC Repair in Hilliard.

Heat Pump Installation in Hilliard
When a heat pump is past the point of sensible repairs, Hilliard homeowners need a system sized for this climate’s cooling load, not a one-size-fits-all unit. We run the load calculation, quote a fixed written price, and schedule a set installation date rather than promising same-day work that no one can deliver properly. Hilliard’s clay and sandy soil also means outdoor units need a stable pad and proper drainage so the unit doesn’t settle or hold water underneath. The choices, the pricing, and the process are laid out on the Heat Pump Installation in Hilliard page.

Furnace Repair in Hilliard
Furnace trouble in Hilliard usually surfaces at the worst possible moment: a run of cold nights, a failed igniter, a tripped limit switch, or a gas valve that won’t open. We work on gas furnaces and electric air handlers, and we explain the failed part in plain terms before we hand you a written price. A furnace repair that fails within the guarantee period gets a free return visit, which is part of The Garrison Standard on every service call. Full details, including what common furnace repairs run in this area, are on our Furnace Repair in Hilliard page.

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 Hilliard
We service all nine major residential HVAC brands, and in Hilliard we work most often on Goodman, Rheem, and York systems. Common parts for those brands stay stocked on our service trucks, which means a capacitor, contactor, or igniter replacement often gets done the same visit rather than waiting on a parts order. For the full list of what we service, see our brands.
Pricing for HVAC Company in Hilliard, FL
| Service | Typical range in Hilliard |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
What pushes a Hilliard repair toward the top of that range is usually age and access: an older system with a failing compressor, or a furnace squeezed into a tight closet, takes longer to work on and costs more in parts. What never changes is the process: the price goes in writing before any work begins, on every job, without exception.
Neighborhoods We Serve in Hilliard
We run calls across Hilliard’s residential areas, from the older streets near the railroad tracks to the newer lots farther out. Response time in town is typically same-day for repair calls, and we coordinate scheduling from a live dispatcher, not an answering service.
- Downtown Hilliard
- Conner-Green area
- Kings Ferry Road corridor
- West side subdivisions
- County Road 108 corridor
Service Area – Cities Near Hilliard
Beyond Hilliard, our service area reaches into the neighboring communities across Nassau and Duval counties. We also serve Yulee, FL, Jacksonville, FL, Fernandina Beach, FL, and Atlantic Beach, FL. If your home sits between any of these areas, call and we’ll confirm coverage before you schedule anything.
Serving Hilliard, FL - Our Local Coverage Area
We’re based in the Hilliard 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 Hilliard
Same-day service is typical for most Hilliard repair calls, especially during the summer when AC failures spike. We answer the phone with a live person 24/7, so you’ll know the arrival window before you hang up, not after a callback.
Replacement installations in Nassau County generally require a permit, and we handle the paperwork as part of the job. Repairs rarely do. If your specific project needs permitting, we’ll tell you plainly during the quote, and the price we give you includes that work.
Yes. Most Hilliard homes run one system for both, so a single visit covers the full setup. That means we check the cooling side and the heating side at the same time, which catches problems early instead of waiting for the opposite season to expose them.
If your system is down or underperforming in Hilliard, call Dalton Heating & Air at (361) 306-9515 for a free estimate and a written price before any work starts. We’ll tell you what’s wrong, what it costs, and when we’ll have it fixed – plainly, with no surprises.
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 Hilliard Customers Say
"Coil cleaning and a refrigerant check before summer. AC has never been this cold."
- Marty D."Good communication, tidy, and disciplined work. Taped off the floor and wiped the unit down."
- Karen J."Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B.







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