The Ultimate Step-by-Step Air Conditioner Installation Guide

Installing a new air conditioner is a significant investment that requires careful planning and precise execution. Whether you are upgrading an outdated system or installing a brand-new unit, understanding the installation process can help ensure a smooth and efficient setup. In this air conditioner installation guide, we walk through each step of the process and highlight how Galmiche & Sons can assist homeowners in St. Louis with professional installation services.

To learn more or for help selecting a new air conditioner unit for your St. Louis area home, contact our team today.

Step 1: Choose the Right Air Conditioner

Before installation begins, selecting the best air conditioner for your home is crucial. Key factors to consider include:

• Size and capacity – A properly sized unit ensures efficient cooling without overworking the system.
• Energy efficiency – Look for ENERGY STAR-rated models for cost savings and sustainability.
• Type of system – Options include central air conditioning, ductless mini-splits, and heat pumps.

Step 2: Prepare for Installation

Proper preparation ensures a smooth installation process. Therefore, this is a key part of the air conditioner installation guide. Homeowners should:

• Schedule a professional assessment – A certified technician will evaluate your home’s cooling needs and recommend the right unit.
• Ensure proper electrical requirements – AC systems require specific voltage and wiring, which may need an upgrade.
• Clear the installation area – Remove any obstructions near the outdoor condenser unit and indoor air handler.

Learn more about How to Avoid Common AC Installation Mistakes

Step 3: Remove the Old System (If Applicable)

If replacing an old AC unit, the existing system must be carefully removed:

• Turn off the power – Always disconnect electrical connections before proceeding.
• Recover refrigerant – A licensed professional must safely extract and dispose of old refrigerant per EPA guidelines.
• Remove old components – This includes the condenser, evaporator coil, and associated ductwork if necessary.

Step 4: Install the New Air Conditioner

Outdoor Unit Installation:

• Place the condenser on a stable surface – It should sit on a concrete pad or mounting bracket.
• Ensure proper clearance – Maintain at least two feet of space around the unit for adequate airflow.
• Secure electrical connections – Wiring and fuses should meet local building codes.

Indoor Unit Installation:

• Install the evaporator coil – This is typically placed in the furnace or air handler.
• Connect the refrigerant lines – Properly sealed connections prevent leaks and efficiency loss.
• Ensure proper drainage – A condensate drain line is necessary to remove excess moisture.

Step 5: Connect the Ductwork and Vents

For central AC systems, ductwork plays a vital role in distributing cool air efficiently. Some key steps include:

• Seal and insulate ducts – Prevents energy loss and maintains consistent airflow.
• Test airflow – Proper balancing ensures even cooling throughout the home.

Step 6: Charge the System with Refrigerant

Refrigerant is essential for cooling efficiency. A trained HVAC technician will:

• Vacuum the refrigerant lines – Removes moisture and contaminants.
• Charge the system – Using manufacturer-specified refrigerant levels ensures optimal performance.
• Check for leaks – Prevents refrigerant loss and potential environmental hazards.

Step 7: System Testing and Final Inspection

After installation, the new air conditioner must undergo testing:

• Power up the system – Verify all electrical connections and controls are functioning.
• Measure temperature and airflow – Ensures proper cooling and efficiency.
• Inspect safety features – Includes checking sensors, drain lines, and emergency shut-off switches.

FAQs About Air Conditioner Installation

Contact Galmiche & Sons for Expert AC Installation in St. Louis

For a hassle-free air conditioner installation experience, trust the experts at Galmiche & Sons. Our skilled technicians provide professional AC installation services tailored to your home’s needs. We follow all of the necessary steps in this air conditioner installation guide to avoid problems and ensure lasting performance. Contact us today to schedule an appointment for heating and air conditioning installation and enjoy efficient cooling all summer long!