AC System Installation in Jacksonville & Clay County
A new air conditioning system is one of the largest purchases a Florida homeowner makes. You deserve to know exactly what you're getting, why it's the right system for your home, and what happens if something goes wrong after installation day.
- 24/7Emergency Service
- 10yrParts & Labor Warranty
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All Set Heating, Air & Plumbing provides air conditioning installation and replacement across Jacksonville and Northeast Florida, serving homeowners throughout Duval, Clay, and St. Johns counties.
AC Installation, Done Right
A Proper AC Installation Starts With Correct Sizing
We perform a Manual J load calculation to correctly size every system — oversized and undersized AC units are among the most common causes of comfort problems and high utility bills in Northeast Florida. In our climate, correct sizing is as much about moisture removal as temperature.
Every installation includes startup and commissioning and a written report of the work performed.
Qualifying equipment installations include a 10-year parts and labor warranty.
Installation Scope
What's Included in AC System Installation
From load calculation to startup — the complete installation process, documented and warranted.
Final installation pricing depends on capacity, efficiency, equipment selection, electrical work, and any ductwork modifications required. All Set provides an itemized quote before work is authorized.
Florida-Specific
Why Florida AC Sizing Is Different From Anywhere Else
Most sizing guides are written for moderate climates. In Middleburg and Clay County, humidity is as much a comfort concern as temperature — and that changes everything about how a system should be selected.
Manual J Load Calculation
The proper way to size a residential AC system. It accounts for ceiling height, insulation, window placement, south/west glass exposure, occupants, internal heat sources, and local climate. All Set performs this calculation before recommending any equipment. If a contractor suggests a size based only on square footage, that's a warning sign.
Latent Load vs. Sensible Load
Sensible load is the heat your AC removes to lower temperature. Latent load is the moisture it removes. In Middleburg, where humidity exceeds 70% most of the year and peaks above 80% in summer, your system handles a disproportionately high latent load. A system sized with northern assumptions will cool to the right temperature but still feel humid and uncomfortable.
Variable-Speed Compressors
A single-stage compressor runs at full capacity or shuts off. On mild days it cools the air too quickly without running long enough to remove humidity — the home hits 74° but feels like 78°. A variable-speed compressor adjusts output and runs longer cycles, removing much more moisture. In Florida's climate, the difference is noticeable every day.
Coastal Corrosion
For homeowners within ten miles of the coast, salt air accelerates corrosion on outdoor coils and cabinet parts. Standard aluminum and copper coils will show damage much faster in a coastal environment. All Set advises coil coating treatments for coastal setups — a small initial cost that significantly extends equipment lifespan in the First Coast area.
Our Process
The Right System, Installed Correctly, Backed by a Real Warranty
We Assess What Your Home Needs
All Set performs a full Manual J load calculation before selecting any equipment. The result is a system recommendation based on your home's actual data — not an estimate based on square footage alone.
You Choose From Honest Options
Clear major-brand equipment options with honest trade-offs explained. The recommendation reflects what makes sense for your home and budget — not what yields the highest margin.
We Install It Right & Back It With 10 Years
Every installation is completed to manufacturer specifications — refrigerant charge, electrical connections, duct sealing, and airflow testing — and qualifying installations are backed by our 10-year parts and labor warranty.
Our Difference
Why Clay County Chooses All Set
10-Year Parts & Labor Warranty Included
Qualifying equipment installations are backed by our 10-year parts and labor warranty — included at no extra cost.
Written Estimates Before Any Work
You approve every job in writing. No hidden fees, no bait-and-switch pricing. Ever.
Insured in Florida
Fully insured HVAC contractor — general liability and workers' compensation coverage.
Financing Available
Ask about current lender programs and written terms for qualifying AC installations.
Cost of a Poor Installation
What a Poor AC Installation Costs You Over Time
The upfront cost of an AC installation is clear. The long-term cost of a poorly done job is hidden. An improperly sized system runs more hours each day than it should, driving higher monthly energy bills for its entire lifespan. If the system isn't installed to manufacturer specifications, it may void parts of the equipment warranty — leaving you responsible for costly repairs when something fails.
In Florida, where a well-maintained system should last 12 to 15 years, the difference between a proper installation and a sloppy one can easily amount to thousands of dollars over the life of the equipment — before considering early replacement costs.
All Set does the job right the first time because a correctly installed system is the only kind worth installing.
Common Questions
Questions Homeowners Ask About AC Installation
Installation pricing depends on system capacity, efficiency, equipment selection, electrical work, and ductwork modifications. All Set provides a clear, itemized quote after assessing the home and before any work is authorized.
SEER2 replaced SEER for new equipment ratings in 2023 and uses updated test conditions. For split-system central air conditioners installed in Florida, current DOE minimums are 14.3 SEER2 for systems below 45,000 Btu/h and 13.8 SEER2 for larger systems. The appropriate efficiency level depends on the equipment type, capacity, home, and energy goals.
AC sizing should be determined with a Manual J load calculation that accounts for square footage, ceiling height, insulation, window placement, ductwork, orientation, and Florida's humidity load. A recommendation based only on the existing unit size or square footage can lead to poor comfort and efficiency.
Most standard residential installations are completed in a single day. Timeline depends on system complexity, ductwork modifications, and electrical compatibility.
All Set offers major-brand residential HVAC systems, subject to model and distributor availability. The recommendation is based on what suits your home and budget, not on what yields the highest margin.
Qualifying equipment installations include a 10-year parts and labor warranty. Optional warranty coverage is available for purchase. Ask our team about current options and pricing.
Yes. All Set provides financing options for new AC installations — view financing details → or ask when you schedule your consultation.
Yes. All Set handles permitting and inspection as part of the installation. A permitted installation protects the homeowner and ensures code compliance.
Ready to Plan Your AC Installation in Jacksonville or Clay County?
Speak with our live dispatcher to arrange an installation consultation and review the next steps for your home.
All Set Heating, Air and Plumbing provides AC repair, AC installation, heating service, plumbing, and commercial HVAC maintenance across Jacksonville, Middleburg, Clay County, and Northeast Florida.