⭐️⭐️⭐️⭐️⭐️ 5.0 Rating 260 Google Reviews

a large metal container outside

How Long Should It Take To Install An AC System?

Installing a new AC system is important to ensure your home stays comfortable and energy-efficient during the warmer months. Depending on factors like the type of system, existing ductwork, and electrical requirements, installing a new AC system typically takes 4 to 8 hours. For complete HVAC replacements, the process may extend to 1 to 3 days.

What to Expect When Installing a New AC Unit

The installation process involves several stages, from the initial consultation to the final testing. Understanding each step can help you prepare and ensure a smooth experience.

Step 1: HVAC Consultation

Before installation can begin, an HVAC technician will visit your home to assess your cooling needs. This consultation typically includes:

  • Measuring your home to determine the proper size of the AC system.
  • Evaluating existing ductwork to ensure it is compatible with the new unit.
  • Discussing your preferences, such as energy efficiency, budget, and additional features like smart thermostats.

After the assessment, you will receive a detailed quote outlining the cost and scope of work. Depending on availability, this step can be scheduled and completed within a few days.


Step 2: Scheduling the Installation

Once you approve the quote and select your new AC system, the next step is scheduling the installation. Availability can vary based on the contractor's workload and whether any special-order equipment is required. However, most installations can be scheduled shortly after the consultation.


Step 3: Preparing for Installation

To ensure a hassle-free installation, homeowners can take a few steps to prepare:

  • Clear the installation area: Remove furniture, decor, or other obstacles around the AC unit and thermostat.
  • Provide easy access: Make sure driveways and pathways are clear for the contractor.
  • Secure pets and children: Keep them away from the work area for their safety.

These preparations help technicians work efficiently and avoid unnecessary delays.


Step 4: The Installation Process

The actual installation process typically takes 4 to 8 hours for a straightforward replacement. More complex installations, such as adding ductwork or replacing an HVAC system, could take 1 to 3 days. Here's an overview of what happens during the installation:

  • Old System Removal (if applicable): The technician will safely remove the old AC unit, including disposing of the refrigerant, in compliance with environmental regulations.
  • Site Preparation: The area is cleaned, and the foundation for the new unit is set up.
  • Installing the New System: Components like the condenser, evaporator coil, and thermostat are installed and connected to existing ductwork or lines.
  • Electrical and Refrigerant Lines: The system is wired, and refrigerant lines are filled and sealed.
  • Testing and Calibration: The technician runs the system to check for proper airflow, cooling performance, and efficiency.

Factors That Influence Installation Time

While the typical timeline for an AC installation is 4 to 8 hours, various factors can affect how long the process takes:

  • Type of System:

    • Central AC Units: Standard installations typically take an entire day.
    • Ductless Mini-Split Systems: These are quicker to install, averaging 4 to 6 hours.
    • Packaged Systems: These may require additional customization, adding time.
  • Ductwork Condition: If existing ductwork is leaky, damaged, or missing altogether, additional time is needed for repairs or replacement.

  • Electrical Upgrades: Homes with outdated electrical systems may require modifications, which can extend the process.

  • Accessibility: Tight or difficult-to-access areas can slow down installation.


How Long to Replace an HVAC System?

Replacing an HVAC system that includes heating and cooling components is more complex than a simple AC unit replacement. It typically takes 1 to 3 days, depending on the scope of work. Additional time may be needed for:

  • Installing a furnace or heat pump alongside the AC system.
  • Sealing or upgrading ductwork to maximize efficiency.
  • Testing and fine-tuning the entire system.

Tips to Ensure a Smooth Installation

Choose the Right HVAC Contractor

Select a licensed, experienced contractor with positive reviews. Their expertise can help avoid delays and ensure proper installation. The Air Company of Georgia proudly serves Metro Atlanta with all 5-star reviews.

Schedule During the Off-Season

Spring or fall is typically less busy for HVAC companies, which can lead to quicker scheduling and possible discounts.

Be Prepared

Ensure technicians have clear access to the installation site and discuss any concerns or special requirements beforehand.


FAQs About AC Installation

How long does replacing an AC unit in an existing home take?
Replacing an existing AC unit usually takes 4 to 6 hours, provided no significant repairs are needed.

Can I use my new AC system right away?
Yes, most systems are ready to use immediately after installation, but it's a good idea to review the manufacturer's instructions and schedule regular maintenance.

What is the best time to replace an AC system?
The ideal time is during spring or fall when demand for HVAC services is lower, ensuring faster service and better availability.

Read Our 5-Star Reviews