About This Service
Air Conditioning Services in Middleburg, FL & Clay County
All Set Heating, Air & Plumbing is an HVAC contractor in Middleburg, FL providing air conditioning repair, installation, maintenance, and emergency service to homeowners across Clay County, Duval County, and Northeast Florida.
In this region, the heat index regularly exceeds 100 degrees and humidity sits above 70% from June through September. That combination creates wear patterns on capacitors, coils, and refrigerant systems that homeowners in moderate climates never encounter — systems here log 2,000 to 2,800 operating hours annually, compared to 800 to 1,200 in northern states.
All Set diagnoses the real problem, clearly explains your options, and completes most repairs the same day. Our technicians service all major brands — Amana, Carrier, Lennox, Rheem, Daikin, Goodman, Bryant, and more — and every qualifying install is backed by our 10-year parts warranty, with an optional 10-year parts warranty available through Yeti Club membership.
What's Included in AC Repair & Maintenance
Comprehensive diagnostics and repair on all AC brands and system types.
Diagnostic Assessment
Full system evaluation, written report of findings, no-surprise pricing.
Capacitor Replacement
Start/run capacitors, $150–$400 typical.
Refrigerant Recharge
Leak check + recharge, $250–$600 typical.
Contactor Replacement
$150–$300 typical.
Fan Motor Repair
Condenser & blower motors, $300–$700 typical.
Evaporator Coil Service
Cleaning, leak repair, replacement, $600–$2,000 typical — up to $4,000–$5,000 in some cases.
Condenser Coil Cleaning
Improve efficiency, prevent shutdown.
Thermostat Troubleshooting
Calibration, wiring, smart thermostat compatibility.
$99 Annual Tune-Up
21-point inspection, written report, scheduled at your convenience.
Common Symptoms
What Your AC Is Telling You
Most homeowners don't know what's wrong with their system until we diagnose it — only what they're experiencing. Here's what the most common symptoms usually mean on Northeast Florida residential systems.
AC Running but Not Cooling
Most common Middleburg summer complaint. Usually low refrigerant from a slow leak, a dirty evaporator coil, or a failing capacitor. All three are fixable — none require a new system.
Short-Cycling Every Few Minutes
An oversized system, a refrigerant problem tripping the pressure switch, or a weak capacitor. In Florida humidity this also leaves the home sticky even when the thermostat reads cool.
AC Freezing Up
Ice on the indoor unit or refrigerant lines means low refrigerant or restricted airflow from a dirty filter. Shut off the system and call — running a frozen coil can damage the compressor.
AC Making Noise
Grinding/screeching is usually a blower motor bearing. Banging from the outdoor unit points to the compressor. Repetitive clicking without startup is almost always a failing capacitor. Gurgling suggests a refrigerant leak.
High Electric Bill, Same Usage
Slow refrigerant leak, biological growth on the coil, or a weakening capacitor all force longer run cycles. The repair cost is usually a fraction of the ongoing energy waste.
AC Not Turning On at All
Almost always electrical — a failed capacitor is the most common cause, followed by a tripped breaker, blown disconnect fuse, bad contactor, or thermostat. Most are same-day fixes.
Our AC Services
Air Conditioning Services for Middleburg & Clay County Homeowners
Why Clay County Chooses All Set
Transparent $99 Diagnostic
A flat $99 diagnostic fee on service calls — no guessing, no surprise charges. Your technician diagnoses the issue and provides a written estimate before any repair work begins.
Same-Day Repairs on Most Calls
We stock the parts most commonly needed for Florida residential AC repairs. Most jobs are diagnosed and completed on the first visit — same-day service is available on dispatched service calls, not automatic with every job.
24/7 Emergency Service
AC emergencies don't follow business hours. All Set answers calls around the clock, including weekends and holidays. A live person picks up.
10-Year Parts Warranty
Standard equipment installations backed by a 10-year parts warranty. Optional 10-year parts warranty available through Yeti Club membership — unmatched in Northeast Florida.
No-Pressure Diagnosis
Your technician explains what's wrong and shows your options. No script guiding you toward replacement, no upsell. You decide with the full picture.
$99 Tune-Up Special
Annual maintenance before summer is the most cost-effective way to prevent emergency repairs. Our 21-point tune-up catches issues before they become breakdowns.
10% Off for Veterans & First Responders
All Set serves many military families and first responders across Clay and Duval County — this discount is a sincere thank you.
Cost of Waiting
What Happens When AC Problems Go Unaddressed
A weak capacitor doesn't show obvious signs of trouble. The system continues to operate — it just works harder, runs longer cycles, and consumes more electricity. Left unchecked, it eventually fails completely and causes the compressor motor to fail as well. What might be a $150–$400 capacitor repair can turn into an $800–$2,500 compressor replacement or a full system replacement.
The same progression happens with slow refrigerant leaks and dirty coils. Both decrease system efficiency and stress other components. A leak found during an April tune-up costs much less than an emergency repair call in July, when the system finally stops cooling — peak heat, peak demand, and the longest wait for service.
Calling the wrong company causes its own problems. A misdiagnosis leads to paying for repairs that don't solve the issue. An oversold replacement means spending $8,000 on a new unit when a $400 part could have fixed it. All Set's approach: diagnose honestly, explain everything clearly, and get it right the first time.
Discounts & Deals
HVAC Specials — Clay County
Common Questions
Questions About AC Repair in Clay County
How do I know if my AC needs repair or full replacement?
Systems under 10 years old with a component failure — capacitor, contactor, fan motor — usually make more financial sense to repair. Systems over 15 years old, or those needing a compressor replacement, often reach the replacement threshold. Our technician will walk you through the numbers on-site so you can decide with confidence.
How much does AC repair cost in Middleburg and Clay County?
Common repairs in our area: capacitor $150–$400, refrigerant recharge $250–$600, contactor $150–$300, fan motor $300–$700, evaporator coil $600–$2,000 (full coil replacement on higher-SEER systems can reach $4,000–$5,000). We provide a written estimate before starting any work — no surprises.
My system uses R-410A refrigerant. Does that affect my repair?
R-410A is being phased out under federal environmental rules — systems built after 2025 use R-454B or R-32. Existing R-410A systems can still be repaired and recharged, but R-410A prices have risen as supply tightens and will likely keep climbing. For older systems, we'll walk you through whether a refrigerant-heavy repair still makes sense or whether replacement is the better long-term move.
Do you offer 24/7 emergency AC service in Middleburg and Clay County?
Yes. All Set dispatches technicians every day of the year including holidays. Call 904-206-8702 any time — a live person answers. No answering service, no next-day callback only.
What does the $99 AC tune-up include?
A full 21-point inspection: capacitor health, refrigerant pressure check, coil cleaning assessment, electrical connections, blower performance, thermostat calibration, condensate drain flush, and a written report of findings. Scheduled at your convenience throughout the service area.
How much does a new AC system cost in Middleburg and Clay County?
Installed costs vary by size, efficiency, and ductwork needs. Entry-level 15 SEER2 systems typically run $4,500–$6,500. Mid-range 16–18 SEER2 units are $6,500–$9,000. Premium variable-speed systems range from $9,000–$12,000+. Financing options are available through All Set.
Why does Florida AC equipment fail faster than in other states?
Middleburg systems log 2,000–2,800 operating hours annually, compared to 800–1,200 in northern climates. Capacitors wear out faster in sustained heat above 95°F. Evaporator coils gather biological growth more quickly above 70% humidity. Refrigerant connections develop micro-leaks after more operating cycles. The components are the same — the environment is far more demanding.
Are you insured in Florida?
Yes. All Set Heating, Air and Plumbing is an HVAC contractor and plumbing company in the state of Florida, carrying full general liability and workers' compensation insurance. Ask for our license numbers anytime — we're happy to provide them.
Ready to Schedule HVAC or Plumbing Service in Middleburg or Clay County?
Call 904-206-8702 to speak with a live dispatcher — same-day appointments available, 24/7, no answering service.
All Set Heating, Air and Plumbing provides AC repair, AC installation, heating service, plumbing, and commercial HVAC maintenance across Middleburg, FL, Clay County, and Northeast Florida.