If you’ve never replaced an air conditioner before, you may not know exactly what to expect when installation day arrives. Will technicians need access to the entire house? How long will the process take? Will your power be shut off? Understanding the basics can help you feel more prepared and make the experience much less stressful.

What Should You Expect During a New AC Installation?

Most AC installations involve removing the old equipment, inspecting supporting components, installing the new system, testing performance, and reviewing operation with the homeowner. Many replacement projects can be completed in a single day, although additional work may be needed if electrical, ductwork, or airflow issues are discovered.
Before installation begins, one of our technicians will evaluate your system, explain their findings, and review your available options. The goal is to help you choose the solution that works best for your home, comfort needs, and budget.

Before Installation Day: Preparing Your Home

While your installation team handles the technical work, there are a few simple steps homeowners can take to help the process go smoothly.

Before installation day, you can help the project run more efficiently by:
  • Clearing access to indoor and outdoor equipment
  • Moving furniture or stored items out of work areas
  • Securing pets during the installation process
  • Preparing for temporary noise and power interruptions
  • Reviewing equipment selections and project details beforehand

Technicians may need access to basements, utility rooms, attics, crawlspaces, garages, and outdoor equipment locations. If needed, making these areas accessible helps the installation crew work safely and efficiently.

Communication Before Your Technician Arrives

At AJ Danboise Plumbing, Heating, Cooling & Electrical, customers are assigned a Customer Liaison to provide updates throughout the service. Depending on your preference, you may receive updates by phone, text, or email, so you know when your technician is expected to arrive. As long as we have your cell phone number, you may not need to wait at home all day. You can let the Customer Liaison team know how much time you need to get back home, and they will provide enough notice before the technician arrives.

Step 1: Initial Evaluation and System Review

When your technician arrives, one of the first things they will do is evaluate your current cooling system and review any issues you have been experiencing. It is helpful for homeowners to be available during this part of the appointment, since the technician may have questions about comfort concerns, repair history, or problem areas in the home.

Step 2: Reviewing Your AC Replacement Options

After the evaluation, your technician will review available repair or replacement options. For AC installation, this may include discussing equipment recommendations, system efficiency, comfort needs, and any supporting work needed to complete the installation properly.
We provide multiple options whenever possible, allowing homeowners to choose the solution that works best for their family. No repairs or installation work should begin without your written approval beforehand.

Step 3: Removal of the Existing AC System

Once the installation plan is approved, technicians safely remove your old air conditioning equipment. This process begins with shutting down electrical power to the system and recovering any remaining refrigerant according to environmental regulations.
Technicians then remove the outdoor condenser unit and any indoor components being replaced, such as the evaporator coil. During this stage, they may also inspect surrounding equipment and connections for issues that could affect the new installation.

Step 4: Inspection and Necessary System Upgrades

Before installing the new equipment, technicians evaluate the supporting components that help your air conditioning system operate efficiently.

During this inspection, technicians commonly evaluate:
  • Electrical breakers, disconnects, and wiring
  • Refrigerant lines and connections
  • Ductwork condition and airflow
  • Drainage components
  • Equipment compatibility requirements

Electrical System Evaluation

Modern air conditioners often have different electrical requirements than older models. Technicians inspect breakers, disconnects, wiring, and other electrical components to ensure they can safely support the new equipment.

Refrigerant Line Inspection

The refrigerant lines connecting the indoor and outdoor units play a critical role in system performance. Depending on their condition and compatibility, these lines may be cleaned, modified, or replaced.

Airflow and Ductwork Assessment

Airflow issues can significantly affect comfort and efficiency. During installation, technicians may inspect portions of the ductwork to identify leaks, restrictions, or other concerns that could prevent your new AC system from performing at its best.

Step 5: Installing the New AC Equipment

Once inspections are complete, the installation team can begin placing and connecting your new air conditioning equipment. This typically includes both the outdoor condenser unit and the indoor evaporator coil.

The outdoor unit is carefully positioned on a level surface to promote proper drainage and reliable operation. Technicians then connect refrigerant lines, electrical wiring, and communication components that allow the system to function correctly. Inside the home, the evaporator coil is installed and connected to the existing air handler or furnace.

Step 6: System Testing and Performance Verification

After installation is complete, technicians perform a series of tests to verify that the system is operating safely and efficiently.

During testing, technicians typically verify:
  • Proper refrigerant charge
  • Airflow throughout the system
  • Thermostat communication and calibration
  • Electrical safety and controls
  • Drainage performance
  • Temperature output and overall operation

Step 7: Final Walkthrough With Your Technician

Before leaving, your technician will take time to review the new system with you. This final walkthrough helps homeowners become familiar with their equipment and understand how to keep it operating efficiently.

During this conversation, you can expect guidance on:
  • Thermostat operation and programming
  • Recommended temperature settings
  • Air filter replacement schedules
  • Routine maintenance recommendations
  • Warranty registration and coverage information
  • Signs that indicate service may be needed in the future

How Long Does a New AC Installation Take?

For many homes, replacing an existing air conditioner with a similar system can often be completed in a single day. However, every home is different, and several factors can affect the project timeline.

Factors that may affect installation time include:
  • System size and complexity
  • Accessibility of equipment locations
  • Electrical upgrades
  • Refrigerant line replacement
  • Ductwork repairs or modifications
  • Thermostat upgrades
  • Additional indoor air quality equipment

Benefits of Professional AC Installation

Proper installation plays a major role in long-term system performance.

  • Better Energy Efficiency: Proper installation helps your system operate closer to its rated efficiency and may help reduce cooling costs.
  • Improved Indoor Comfort: Correct sizing and calibration support more consistent temperatures throughout your home.
  • Longer Equipment Life: Properly installed systems experience less strain and often provide more years of dependable service.
  • Warranty Protection: Many manufacturers require professional installation to maintain warranty coverage.
  • Reduced Risk of Future Repairs: Addressing electrical, airflow, and refrigerant concerns during installation helps prevent avoidable issues later.

Why Choosing the Right Installation Company Matters

An experienced HVAC contractor will properly size the equipment, inspect supporting components, verify system performance, and answer your questions throughout the installation process. AJ Danboise Plumbing, Heating, Cooling & Electrical also focuses on providing a 5-star experience, with clear communication, multiple options whenever possible, and written approval before work begins.

If you are considering a new air conditioner in the Farmington Hills and surrounding area, AJ Danboise Plumbing, Heating, Cooling & Electrical will guide you through the process, review your options, and complete your installation with care. Contact us today to learn more!

company icon