Most AC installations in Miami take between 4 to 8 hours and finish in one day.
The exact time depends on several factors. Your home’s size matters. The type of AC system you choose makes a difference, too. Sometimes, workers need to perform extra tasks, such as updating an electrical panel or adding new ductwork. These jobs add more time to the installation.
Knowing what affects the timeline helps you plan your day. Preparing your home in advance can help streamline the process. You’ll also know when to expect the workers to finish.
Let’s examine each factor that affects the duration of your AC installation.
Typical Time for an AC Installation
Most AC installations include removing the old unit, setting up the new one, connecting wiring and ductwork, testing the system, and cleaning up afterward.
Here’s a quick breakdown:
- Basic replacement: 4–6 hours
- Full system upgrade: 6–8 hours
- Complex installations: 1–2 days (for homes needing new ductwork or electrical work)
While that’s the general range, several factors can make your installation faster—or slower.
Factors That Affect Installation Time
1. Type of Air Conditioning System
The kind of system you’re installing plays a big role in how long the process takes.
- Central AC systems usually take most of the day because they connect to existing ducts.
- Ductless mini-splits are faster, often done in 4–6 hours, depending on how many indoor units you have.
- Heat pumps take longer if the installer needs to adjust or add new wiring.
Each system requires a unique setup, so your technician will tailor the process to your home.
2. Removing the Old Unit
If your old air conditioner is easy to reach and remove, this part only takes about an hour. But if the system is in a tight attic or rooftop area, it may take longer.
Technicians will also remove old refrigerant safely, disconnect wiring, and check the area for leaks or damage before installing the new unit.
3. Condition of Your Ductwork
Homes with older ducts often need extra work. Cracked or leaky ducts can cause cool air to escape, forcing your system to work harder.
If your ducts are in good shape, the installation moves quickly. But if they need repairs or sealing, expect a few extra hours. In some cases, a full duct replacement may take an additional day.
4. Electrical and Structural Adjustments
If you’re switching to a different AC model or upgrading your power capacity, your electrician may need to install a new breaker or wiring.
Small electrical work usually adds an hour or two. Larger upgrades, such as upgrading your electrical panel, can delay the process to the next day.
5. Testing and Calibration
Once the new AC system is installed, technicians will:
- Check refrigerant levels
- Test for air leaks
- Confirm proper airflow
- Calibrate the thermostat
This testing ensures your system runs safely and efficiently. It usually takes another 1–2 hours, but it’s worth the time.
When Installation Might Take Longer
Some homes may need extra work that extends the timeline. Common causes include:
- New construction homes with no existing AC system
- Ductwork repairs or replacements
- Custom zoning systems with multiple thermostats
- Limited access to crawl spaces or attics
- Bad weather that delays outdoor work
If your home needs these adjustments, your installer will explain the extra time before work begins.
Keep Cool with Professional AC Installation
A typical AC installation in homes takes less than a day, but the comfort it brings lasts for years. Factors such as your home’s size, duct condition, and electrical setup can impact the timeline; however, working with a certified technician ensures the job is done correctly and on time.
If your current system is old or struggling, don’t wait for it to fail in the middle of summer.
Schedule your AC replacement today and enjoy a cooler, more energy-efficient home tomorrow.
