How Long Does AC Installation Take?

Many homeowners planning to upgrade their cooling systems often ask, “How long does AC installation take?” The short answer is that most standard air conditioning installations take between 4 and 8 hours. However, several factors can extend or shorten that time. The type of system, size of your home, and whether ductwork or electrical modifications are needed all play a role. At Milehi HVAC, we aim to complete every Denver AC installation efficiently while maintaining top-quality performance and safety.

Understanding the AC Installation Process

Before diving into how long it takes, it’s important to understand what goes into a complete AC installation. This section explains the key stages technicians follow to ensure your new system is installed properly and runs efficiently.

Pre-Installation Assessment

Every installation begins with a detailed home inspection. Technicians assess your home’s layout, ductwork, insulation, and existing electrical systems. This step determines the best AC system for your needs and typically takes 1–2 hours. Understanding your setup early helps estimate the overall AC installation time more accurately.

Removing the Old System

If you already have an older air conditioner, it must be safely removed. The process includes disconnecting power lines, refrigerant lines, and removing the unit itself. This adds 1–2 hours to the total AC install duration.

Installing the New Unit

Next comes setting up the new air conditioning system. This includes positioning the outdoor condenser, connecting refrigerant lines, securing the indoor air handler, and wiring everything correctly. This step is the most time-consuming, usually taking 3–6 hours, depending on the system type and location.

Testing and Calibration

Once the installation is complete, the technician will test the system. This ensures everything runs smoothly and efficiently. The testing process typically adds another 1–2 hours, ensuring your new AC delivers the comfort and performance you expect. In most cases, the entire process answers the question “How long to install AC?” about one working day for a standard home setup.

Factors That Affect AC Installation Time

Not every installation is the same. Here we’ll explain what factors can make the process faster or slower and how each impacts the overall time for AC installation.

Type of System

Different systems require different installation approaches. Central air conditioners take longer than ductless systems. A ductless mini-split might take 4–6 hours, while a full central system could require 8–12 hours. The type of system largely determines your total AC install duration.

Home Size and Design

Larger homes naturally take longer due to more extensive ductwork and multiple zones. Smaller homes with simple layouts generally require less AC installation time, while multi-story homes can extend the process by a few hours.

Ductwork Condition

If your ductwork is in good condition, installation will go faster. However, repairs or replacements can add a full day to the time for AC installation. Old or leaky ducts must be fixed before the system is installed for efficient operation.

Electrical and Structural Adjustments

Some older homes require upgrades to handle a new air conditioner’s electrical load. This can include circuit breakers or panel updates, which add to the total AC installation time.

Local Permits and Inspections

In many areas, including Denver, permits and inspections are required for HVAC work. The time it takes to schedule and complete inspections can affect how long the installation takes. At Milehi HVAC, we manage this process for our customers to ensure a smooth and code-compliant Denver AC installation.

Step-by-Step Timeline for a Typical AC Installation

Let’s walk through what a typical day of installation looks like so you know what to expect.

The total AC install duration varies, but this gives a clear picture of how technicians manage their time efficiently during the project.

How Long Does AC Installation Take for Different Systems?

Different air conditioning systems come with unique installation requirements. Below, we explain how installation time changes based on the type of system you choose.

Central Air Conditioning

Central AC systems usually take 6–10 hours to install if existing ductwork is in good shape. If ducts need to be replaced, expect an additional day or two.

Ductless Mini-Split Systems

These are much faster to install. Each indoor air handler adds about 1–2 hours to the total time for AC installation. Most homes can have these systems fully set up within a single day.

Window or Portable Units

These are simpler to install, typically within an hour or less. However, they don’t provide the same comfort or efficiency as central or ductless systems.

Heat Pumps

Heat pumps serve both heating and cooling functions, which adds to their complexity. Installation may take 8–12 hours depending on the layout and system design.

The Importance of Professional Installation

Before attempting a DIY setup, homeowners should understand that professional installation ensures safety, performance, and warranty protection. Certified technicians follow strict standards that impact both how long installation takes and how well the system performs afterward. Professional service guarantees that your Denver AC installation is done right the first time, saving you money and stress in the long run.

Tips to Speed Up the AC Installation Process

If you want your installation to go as smoothly as possible, there are steps you can take to help technicians complete the job faster.

• Clear the Work Area: Make sure both indoor and outdoor spaces are accessible.

• Provide Electrical Access: Ensure the main panel is reachable.

• Schedule During Off-Peak Times: Avoid peak summer months when demand is high.

• Inspect Ductwork in Advance: Address any issues before installation day.

• Discuss Options Early: Talk with your contractor about system upgrades or add-ons ahead of time.

Following these tips can reduce the AC installation time and make your experience more efficient.

How Long Does AC Installation Take in Denver?

If you live in the Denver area, you might wonder how long local installations take. Most Denver AC installation projects are completed within one working day, depending on system size and home layout. Weather, permits, and home age can slightly extend the timeline. Denver’s climate makes professional installation even more important for optimal performance and efficiency.

Conclusion

To summarize, how long does AC installation take? On average, you can expect your new system to be up and running in 4–8 hours, though larger or more complex setups may require a full day or more. Factors such as ductwork, home design, and system type all affect how long the process lasts.

For reliable and efficient service, trust Milehi HVAC, your go-to experts for professional Denver AC installation. Our team handles every step from permits to testing so you can enjoy comfort quickly and confidently. Contact us today to schedule your installation or request a detailed estimate for your home.

FAQs

1. How long to install AC in a new home?

For new construction, AC installation typically takes 1–2 days, depending on the system type and layout.

2. Can AC installation be done in one day?

Yes, most standard installations are completed in a single day if there are no major duct or electrical issues.

3. Does weather affect AC install duration?

Yes, extreme weather can delay outdoor setup or system testing, adding time to the process.

4. How do I prepare for AC installation?

Clear pathways, remove fragile items, and discuss thermostat placement before technicians arrive.

5. Who offers the best AC installation service in Denver?

Homeowners trust Milehi HVAC for fast, affordable, and high-quality Denver AC installation done right the first time.