Living in the Jacksonville and St. Augustine areas means enduring high humidity and sweltering summer heat, so questions about air conditioning come up often. United Air Temp has served this region for decades, bringing expert insight, reliable AC services, and round‑the‑clock support to homeowners throughout Northeast Florida. Our technicians understand local climate challenges and are happy to answer your most common AC questions, from cost to maintenance, health concerns, system types, and beyond.

How Much Is a New Air Conditioning Unit?

A new residential air‑conditioning unit in Northeast Florida typically ranges from $3,800 to $7,500. That price depends on the system’s SEER rating, the square footage of your home, and installation complexity—especially if ductwork must be modified or replaced. Additional expenses may include upgrading ductwork for better airflow, replacing your thermostat with a smart or programmable model, or labor charges tied to electrical or permit work. United Air Temp offers upfront pricing so you know all expected costs before installation begins.

How Do I Maintain My Air Conditioning System?

Proper maintenance keeps your AC running efficiently and prolongs its lifespan. You should change your air filter every one to three months to keep airflow clear and reduce dust buildup. Each year, inspect and clean the condenser and evaporator coils to prevent dirt from restricting heat transfer. Finally, schedule a professional AC tune‑up before peak cooling season to have a licensed technician check refrigerant levels, test electrical components, and make sure everything is running smoothly. This regular care helps prevent breakdowns and keeps your unit running at peak efficiency as the Florida heat ramps up.

Can My Air Conditioning Make Me Sick?

An under‑maintained air‑conditioning system can circulate allergens, mold spores, and dust throughout your home, potentially worsening respiratory conditions. Cold, dry air may also irritate throats or nasal passages in sensitive individuals. Regular filter changes, coil cleanings, and proper humidity control can markedly reduce these risks. At United Air Temp, we inspect indoor‑air‑quality components during tune‑ups and recommend solutions such as filtration upgrades or whole‑home dehumidifiers to safeguard your comfort—and your health.

How Long Do Air Conditioning Units Last?

With proper maintenance, most residential AC systems last 12 to 15 years. If you notice frequent breakdowns, rising energy bills despite normal usage, or uneven cooling throughout your home, those are signs your system may be nearing the end of its useful life. Staying on top of filter changes, coil cleanings, and annual inspections can often push that lifespan toward the longer end of the spectrum—keeping your unit working reliably until it’s time to consider a replacement.

Why Is My Air Conditioning Unit Leaking Water?

When your AC is leaking water, a few common issues are usually at fault. A clogged condensate drain line can back up water and spill into your living space, while frozen evaporator coils—perhaps caused by restricted airflow from a dirty filter—can thaw and drip. An excessive build‑up of debris on condenser coils can also create drainage issues. Left unaddressed, leaks can lead to water damage, mold growth, and system shutdown. Often, a homeowner may clear the drain line or change the filter to resolve the problem, but persistent leaks warrant a technician’s attention.

How Do You Repair an Air Conditioning Unit?

Before calling a pro, you can check a few basics yourself: verify thermostat settings and batteries, ensure the filter isn’t clogged, and confirm the system has power. Many common repair issues, such as refrigerant leaks, electrical faults, or faulty capacitors, require specialized tools and a certified technician. When you hear a hissing sound, notice icy coils, or smell burning or hear clicking, those are clear indicators it’s time to call an experienced HVAC professional from United Air Temp for a safe diagnosis and AC repair.

What Is Ductless Air Conditioning?

Ductless mini‑split systems use small indoor air handlers connected via refrigerant lines to an outdoor condenser, providing heating and cooling without traditional ductwork. They’re ideal for homes without existing ducts, room additions, or zoned‑cooling scenarios. Ductless units operate quietly, provide efficient performance, and offer flexible installation. While they can serve single rooms or small areas very well, in open‑concept homes or larger spaces you may need several indoor heads—something a technician can design to fit your layout.

How Does Central Air Conditioning Work?

Central air conditioning uses four main components: the outdoor condenser, the evaporator coil (typically located in the air handler), a blower motor/air handler, and ductwork throughout your home. Refrigerant absorbs heat at the evaporator coil inside, then releases it outdoors at the condenser. The blower circulates cooled air through ducts, with return vents pulling warm air back for repeated conditioning. A thermostat monitors indoor temperature and controls the system for whole‑home comfort, delivering consistent cooling across every room fed by the duct system.

What Is a Mini Split Air Conditioning Unit?

A mini‑split, or ductless system, consists of an outdoor unit linked to one or more indoor air handlers via refrigerant lines and a condensate drain. Unlike central AC, it doesn’t rely on ductwork to distribute air. Mini‑splits are often used to cool individual rooms, garages, attic conversions, or new additions. Each indoor head can be controlled independently, giving homeowners control over temperature zones without modifying existing duct systems.

Can a Nest Thermostat Replace Heating and Air Conditioning Controls?

Yes, Nest thermostats are compatible with most HVAC systems—once your wiring meets requirements—and offer features such as smart scheduling, remote app control, and energy‑saving learning modes. However, complex setups like dual‑fuel systems or multi‑stage HVAC units may require professional configuration to work correctly. For Jacksonville and St. Augustine homes using central systems, the technicians at United Air Temp can install and configure Nest thermostats so they integrate seamlessly with your heating and cooling equipment.

How Do I Charge My Home Air Conditioning System?

“Charging” an AC system means adding refrigerant to reach proper pressure levels. This process requires specialized gauges, EPA certification, and careful handling to meet environmental regulations. Signs of low refrigerant include warm air from vents, hissing noises, and ice forming on the evaporator coil. Because of strict safety laws and the risk of releasing refrigerant into the atmosphere, homeowners should never attempt DIY charging. United Air Temp’s licensed technicians have the tools and training to diagnose leaks, repair components, and safely recharge your system.

Does Air Conditioning Reduce Humidity?

Yes, as air passes over your AC’s cold evaporator coil, moisture condenses out of it, effectively dehumidifying the air. Proper system sizing is critical—if the AC is oversized or cycles too quickly, it may cool without removing enough humidity. In the Jacksonville area’s humid climate, a correctly sized system or a whole‑home dehumidifier can make a significant difference for indoor comfort by balancing temperature and moisture removal throughout the day.

How Do I Clean My Air Conditioning Coils?

Before cleaning any coils, always turn off power at the breaker or disconnect switch for safety. Evaporator coils (inside your air handler) and condenser coils (outdoors) accumulate dust and debris over time, which reduces efficiency and airflow. Using a soft coil brush or a commercially available coil cleaner, gently clean surfaces without bending fins. Annual coil cleanings help prevent system strain, reduce energy costs, and maintain proper cooling performance throughout Jacksonville’s hottest days.

How Much Does Air Conditioning Cost in Electricity?

Your AC’s electricity cost depends on its SEER efficiency rating, usage patterns, and local energy rates. In Florida, cooling can run anywhere from about $0.06 to $0.88 per hour of operation. Smart thermostats, ceiling fans, and regular maintenance—such as keeping filters clean and coils clear—can help lower costs. United Air Temp provides efficiency evaluations during AC maintenance visits and can recommend ways to optimize usage so you stay comfortable without breaking the bank.

Do You Need Help with Your Air Conditioning System?

Whether you’re looking for an annual tune‑up ahead of Jacksonville’s summer heat or dealing with a sudden AC breakdown, United Air Temp’s licensed technicians are ready to help. From AC replacements and refrigerant charging to coil cleanings and smart thermostat installations, we handle it all—and we back our work with upfront pricing, same‑day service, and a satisfaction guarantee. Our seasoned experts protect your home comfort in Jacksonville and St. Augustine so you can relax when the heat kicks in.

Contact United Air Temp today to schedule AC service or a tune‑up in Jacksonville or St. Augustine, FL.

More Info on Air Conditioning

• Repair vs. Replace: A Cost‑Benefit Guide for 10‑Year‑Old Air Conditioners
• Spring AC Tune‑Up Checklist: 11 Tasks We Perform That DIY Can’t Match
• AC Suddenly Stopped? 5 Signs Your System Needs Same‑Day Repair
• 5 Most Common AC Problems & Repairs in Jacksonville, FL
• What Is a SEER Rating? What To Know Before Buying a New HVAC System
• Do I Need a New Air Conditioner for Summer in Jacksonville?
• What Size AC Do I Need for My Home in Florida?
• What Is the Ideal AC Temp in Jacksonville, FL?