AC installations on average take between 4 and 8 hours. However, more complex projects can take roughly one to three days. The timelines can vary depending on the total size of the HVAC system and whether an existing unit is installed. Let’s explore the different AC installations and their projected timelines.
Quick Takeaways
- Most AC installations take 4- 8 hours.
- Full HVAC system replacements may take 1 to 3 days.
- Ductwork repairs and electrical upgrades can extend installation time.
- Home size, system type, and accessibility affect project length.
- Professional installation helps ensure proper performance and warranty protection.
AC Installation Timeline at a Glance
| Installation Type | Typical Timeline |
|---|---|
| AC Replacement | 4-8 Hours |
| Heat Pump Installation | 1 day |
| Ductless Mini-Split Installation | 4-10 Hours |
| Full HVAC System Replacement | 1-3 Days |
| New Ductwork Installation | 2-5 Days |
What Happens During an AC Installation?
Removal of the Old Equipment
The technicians start by removing the old equipment. They shut off the power to the AC, then disconnect the electrical supply. They remove all indoor components and clean the area. Finally, they’ll remove the exterior unit from its position and make space for the new installation.
Installation of Indoor Components
Next, they install all indoor AC components. For the average unit, the components include a blower motor or air handler, condensate drain system, and evaporator coil. They’ll insert the air filter into place to trap dirt and dust.
Installation of the Outdoor Condenser
The technicians evaluate the existing concrete pad. It must be level for the new AC installation. If not, they will repair it or recommend a replacement. Finally, the technicians position the outdoor condenser into place.
Electrical and Refrigerant Connections
Next, they connect the copper refrigerant lines. They braze the copper lines to reduce oxidation. Next, they install the disconnect box near the unit. Finally, they will wire the new unit to the electrical supply.
System Testing and Final Inspection
Finally, the technicians open the valves and release the refrigerant charge. They’ll turn on the unit and verify that it works properly.
Factors That Affect How Long AC Installation Takes
Type of Air Conditioning System
The type of AC system determines the installation timeline. For example, a standard AC replacement can take up to 8 hours to install. However, if you’re replacing your entire HVAC system, it can take up to three days.
Size of the Home
The size of your home determines the necessary cooling capacity. This means it dictates the unit size. For a larger home, you may need multiple or larger units. The installation time may double if you need more than one unit.
Ductwork Condition
Technicians assess the ductwork during an AC installation. They will clean it out and ensure proper airflow. However, damaged ductwork requires repairs or replacement. Ductwork replacement increases the overall installation timeline.
Electrical Upgrades
You may need electrical upgrades for a new AC installation. A double-pole breaker is required for an AC unit and must be rated between 15 and 60 amps. The AC unit needs a dedicated 220/240V circuit. You need a new disconnect box if it is outdated. Electrical upgrades may be needed to meet electrical safety codes.
Accessibility of Equipment
The equipment’s accessibility may affect the installation timeline. For example, if the AC is inside narrow spaces, the technicians must work in cramped areas. They’ll have to dismantle the unit into pieces, which takes longer. It can also increase work hazards and increase the installation costs.
Permit and Inspection Requirements
An HVAC professional will understand which permits and inspections are necessary. They can manage mechanical, electrical, or building permits required. They’ll perform rough-in and final inspections according to electrical and building codes.
Unexpected Installation Challenges
HVAC technicians can face unexpected roadblocks during AC installations. They can include incompatible infrastructures, ductwork leaks, and outdated electrical systems. These obstacles can extend the timeline for your AC installation.
Can AC Installation Be Completed in One Day?
Same-day AC installations are realistic if it is a straight swap. This means you are replacing your old unit with the exact same AC unit.
However, the unit must be in stock, and all existing infrastructure must operate properly. Off-peak season installation scheduling can also reduce installation time and waits. Installing a completely different or larger unit will realistically take about 2 to 5 days.
What Can Delay an AC Installation?
There are many circumstances that can delay an AC installation. For example, damaged ductwork requires immediate replacement. Electrical issues must be resolved before installing a new unit. They can violate electrical safety standards or damage a new AC unit.
Permit delays can stall the project, and the technicians cannot start without them. You may also have to wait if the equipment isn’t in stock or if shipment is delayed. Finally, weather-related challenges can cause technicians to stop mid-project.
How to Prepare for AC Installation Day
Prepare for the AC installation by creating direct access to the units.
- Ensure nothing is near the indoor or outdoor unit, including furniture and lawn equipment.
- Trim your landscape and mow your lawn before the project starts.
- Move anything that could break or become damaged from the path between the indoor unit and the door.
- Secure your pets away from the work area.
- Provide clear access to your main bathroom for the workers. You may also consider offering them bottled water.
- Frequently Asked Questions About AC Installation Time
How long does it take to install a new AC unit?
It depends on what AC unit is installed. A straight swap for a new unit of the same model can take 4 to 8 hours. A heat pump installation can take one full day. A ductless mini-split installation can take between 4 and 10 hours. A full HVAC replacement will take one to three days.
How long does it take to replace an AC system?
If you are replacing the same model, it can take between 4 and 8 hours. However, the entire infrastructure must operate as expected.
Can I stay home during AC installation?
Yes, homeowners can stay at home during an AC installation. However, the installation timeline could mean you don’t have cooling services until the project’s completion.
Does replacing ductwork increase installation time?
Yes, installing new ductwork can add between two and five days to the overall installation time.
How long does AC installation take in Florida?
The AC installation time may increase depending on the unit type, weather conditions, and equipment availability. On average, a straight swap can take between 4 and 8 hours. Your wait time depends on HVAC service availability, peak-season scheduling, and any additional component replacements.
Schedule AC Installation With One Hour Heating & Air Conditioning
If you’re planning an AC installation in Melbourne, FL, or anywhere along the Space Coast, One Hour Heating & Air Conditioning is ready to help. Our team provides professional AC installation services, clear communication, and dependable workmanship from start to finish.
Contact One Hour Heating & Air Conditioning today to schedule your estimate and see why we’re always on time, or you don’t pay a dime.