What Is the Process of Installing an AC Unit?

Getting a new air conditioner installed is one of the bigger comfort investments a homeowner makes, yet most people have no idea what actually happens once the crew shows up. The old unit goes out and a new one comes in, but the steps in between stay a mystery until installation day.

Process of Installing An AC Unit

At Gerald Griffin Heating and Cooling, we install cooling systems across Belmont, Mount Holly, and the rest of Gaston County. This guide walks you through every stage so you know exactly what to expect from your AC installation.

Why the Installation Process Matters

People tend to focus on the brand or the price of a new air conditioner, but the quality of the install matters just as much. A top unit installed poorly will run louder, break down sooner, and cost more to run than a mid-range unit installed correctly.

The U.S. Department of Energy has found that a poor installation can cut a system’s efficiency by up to 30 percent. That is money leaking out of your home every month, which is why each step below is done carefully and in order.

Step 1: The In-Home Assessment

Every proper AC installation starts before any equipment is unboxed. A Gerald Griffin technician visits your home to inspect the space and gather the details needed to size your system correctly.

During this visit, we look at the following:

• Square footage and ceiling height
• Window count, size, and sun exposure
• Insulation levels in walls and attic
• The condition and layout of your existing ductwork

This information feeds a Manual J load calculation, which tells us the exact cooling capacity your home needs. An oversized unit short cycles and never removes humidity properly, while an undersized one runs constantly and cannot keep up. Getting the size right is the foundation of a comfortable home.

Step 2: Choosing the Right AC Unit

Once we know your home’s cooling needs, the next step is matching it to the right equipment. This is where your budget, efficiency goals, and long-term plans come into the conversation.

A few factors guide the decision:

• SEER2 rating: Higher ratings cost more upfront but lower monthly bills.
• System type: Central air, heat pless mini-splitump, or a ductless mini-split suit different homes.
• Brand and warranty: Gerald Griffin Heating and Cooling installs Trane, Goodman, and RunTru by Trane.
• Home layout: Some homes benefit from zoning for different areas.

At this stage you also receive a clear written proposal with every cost spelled out before any work begins. You should never feel pressured to pick a system that does not fit your family or your budget.

Step 3: Removing the Old System Safely

On installation day, the first hands-on task is taking out your old air conditioner. This is not as simple as unplugging it and hauling it away.

Old systems still contain refrigerant, which certified technicians must recover and handle according to EPA rules rather than venting it into the air. After the refrigerant is captured, the crew disconnects the electrical, detaches the refrigerant lines, and removes both the outdoor and indoor components. The old equipment is then hauled away so you are not left with bulky units in your yard.

Step 4: Installing the New AC Unit

This is the core of the job, and it involves several connected parts working together. A residential air conditioner has an outdoor unit and an indoor unit, and both need to be set and linked correctly.

Here is what happens during the main install:

• Setting the outdoor condenser on a level pad with clearance for airflow and service
• Installing the indoor coil or air handler that connects to your ductwork
• Connecting refrigerant lines and sealing them to prevent leaks
• Wiring the electrical to your panel and thermostat
• Installing or updating the thermostat, often a smart model for better control

Attention to detail here separates a lasting install from a problem-prone one. Line sets need the correct length, connections need to be tight, and the whole system needs to be sealed before it ever runs.

Step 5: Testing and the Final Walkthrough

A new unit is not finished the moment it is bolted in place. Before we consider the job complete, the Gerald Griffin team runs careful testing to confirm everything works as it should.

The technician pulls a vacuum on the refrigerant lines, then charges the system with the exact amount the manufacturer specifies. From there we check airflow, verify the thermostat responds, run a full cooling cycle, and walk you through your new system before handing over your warranty paperwork.

How Long Does AC Installation Take?

Most homeowners are surprised at how quickly a straightforward install goes. For a typical replacement where the ductwork is already in good shape, the job is usually finished in a single day, often within four to eight hours.

Certain situations add time. Installing new ductwork, relocating a unit, or upgrading electrical can push the timeline into a second day, and your technician will give you a realistic estimate during the assessment.

Frequently Asked Questions

Homeowners in the Gaston County area ask us the same handful of questions before an install, so here are quick answers:

Ready for a Smooth AC Install in Belmont?

Installing an air conditioner is a detailed process, but you do not have to manage any of it yourself. When each step is done right, you end up with a system that cools evenly, runs efficiently, and lasts for years.

If your old unit is on its last legs or you are planning ahead for summer, Gerald Griffin Heating and Cooling is ready to help. Call us at (980) 277-5122 or book online to schedule your in-home assessment and get a clear, upfront quote.