AC Unit Installation: A Step-by-Step Guide

August 3, 2021
AC Installation in Deptford, NJ

If you’re planning to have an AC unit installed, you’re probably wondering what really goes into it. Although you’re not installing it yourself, there are benefits to understanding the gist of the installation process. With knowledge of the building blocks that make AC units run, you can be more aware of potential future problems and more confident in the unit’s function.

Without question, the process of installing an AC unit is quite complicated. However, with a little dedication, you can understand the basics of what the professionals are up to while they’re at work. Here’s a step-by-step guide to the AC unit installation process.

Collecting Initial Important Information

If you’re having your AC unit replaced, it has most likely powered your home for years or even decades. Information about your current unit is typically collected by the installation team beforehand. This helps the technicians make decisions about things such as specialized equipment use. If you’re getting an AC installed for the first time, the technicians probably won’t need to collect much initial information.

A good installation technician will review what they plan to do, confirming your approval and giving you a basic idea of what to expect in terms of time, safety, and other general factors.

Preparing the Area for the New AC Unit

After removing any existing AC unit, the technicians will begin installation by leveling the ground where your new condenser unit will sit. Once the experts complete this step, they’ll place a pad on the leveled ground, preparing the condenser for later installation.

Installation of the Indoor Evaporator Coil

The two options that come with the installation of a new evaporator coil are for the coil to be cased or uncased. A cased coil is the better option as it’s designed to sit conveniently on top of the furnace without any modifications. It fits inside an insulated cabinet in which removable panels allow easy access to the coil inside. After placing it securely on top of the furnace, the final step is to connect and seal it to the existing sheet metal plenum.

Cased coils aren’t always guaranteed, however, because of restrictions such as space and size as they relate to your home. Although installing an uncased coil can take a bit more time, there’s no difference in warranty or durability between the two types of coils.

The Copper Line Gets Installed

The refrigerant line set is comprised of two copper lines, one of which acts as the suction line for your unit and the other as the liquid line. A good installation team will work to install the refrigerant line as close to your home’s beams and ductwork as possible. Additionally, they’ll aim to install the lines with as few bends and turns as possible, ensuring maximum time is saved and that the lines work effectively.

The AC Condenser Is Set up

Before the condenser is set on the pad, the installation team should check it for any damage or flaws. Once the condenser is officially placed on the pad, its service valves, which work to isolate the refrigerant within the unit, must be fitted with the refrigerant line set. Then, the line must be brazed in, requiring the valves to reach at least 1,200 degrees Fahrenheit. This also allows the filler rod to flow and weld the connection.

The Filter Dryer Is Installed

Filter dryers absorb moisture and provide physical filtration in your unit. Because contaminants of any sort, including moisture and water, can put the entire unit in jeopardy, filter dryers that function properly are absolutely imperative. Since filter dryers are a component of the refrigerant system, the brazing process that is needed for the copper line set will be needed here, too.

High-and Low-Voltage Wiring Comes Into Play

The new AC system cannot operate unless high-and low-voltage wiring is reconnected. The team will usually achieve this by mounting a disconnect box, using the existing power supply from the electrical panel inside your home.

The Condensate Drain Line Is Installed

The condensate drain line’s primary function is to serve as a drain for built-up moisture within the unit. Installation involves connecting it to the evaporator coil.

Looking to get an AC unit installed in your home in South Jersey or Southeastern Pennsylvania? You can count on us at JAMCO Heating & Air Conditioning for all of your air cooling needs. We even offer other services such as heating and sheet metal installation. Get in touch with us today.

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