The Basics of Air Conditioning Installation

Air Conditioning Installation is a multi-step process. The best companies will take the time to explain their process and make sure you understand it.Air Conditioning Installation

All team members handling refrigerant must have individual EPA certifications. They should also have G2 (Gasfitter 2nd Class) licensing if they are working on gas connections. To learn more, visit

There comes a point in every air conditioning system’s life when it makes more sense to replace it with a new unit than continue to pay for expensive repair bills. When the time comes to replace your old AC, there are several important things you need to keep in mind, including choosing a professional who can complete the installation job quickly and effectively.

The first step in air conditioning installation is determining the proper size of the AC to be installed. This is important because an AC that is too large won’t be able to cool the entire home and will cost more to operate than necessary. The technician will calculate the home’s heating load value to determine the appropriate sized unit for the property.

Next, the installer will prepare the area where the outdoor unit will be placed. This involves removing any debris and ensuring that the area can support the weight of the unit. The area should also be clear of any obstructions, such as nearby trees or building structures. It’s also a good idea to keep the outdoor unit at least 3.3 feet (1.0 m) away from any antennas and cables used for televisions, radios, intercoms, telephones, or other devices that may cause electrical interference with the AC.

Once the area is clear, the installer will install the condenser pad on which the outdoor unit will sit. They will then connect the copper line set and service rod to the compressor with a special fitting, which is done by melting the two together using a propane torch. Once the connection is made, they will affix the pipe and cable clamps to the wall.

Most new air conditioning systems come with a new thermostat, so if you’d like your air conditioner installer to install it for you, they can do that at the same time as they connect your new unit. The thermostat is important for keeping your home comfortable while maximizing energy efficiency. The installer will also test your new AC to make sure it’s cooling as intended. If it’s not, they can adjust the settings to get you back on track.


The commissioning of air conditioning systems is one of the most important steps in ensuring that a new system operates as designed. It involves a thorough check of the equipment to verify that it is operating correctly and efficiently, addressing any issues that may have occurred during the installation process. Without it, your air conditioning system may not function as well as it could or even at all, leading to poor indoor air quality and a shorter life span for the unit.

A good air conditioning company will always include a commissioning process when they install a new system. This allows them to ensure that the unit is set up properly for the home or building and that it meets all the necessary requirements, such as the Green Building Council LEED certification and other local, state, and national construction codes and standards. It also helps them maintain their warranty coverage for the equipment, ensuring that all the manufacturer’s specifications are met.

This process includes checking the electrical wiring, confirming that the proper voltages are being supplied to the air conditioning units, and that all the safety controls are functioning properly. It also involves checking the ducting, verifying that it is of the correct size and is being supported appropriately. It will also involve taking measurements of airflow in and out of each supply, return, and exhaust device to compare with the design airflow for those devices.

Once the commissioning is complete, the HVAC equipment will undergo Testing, Adjusting, and Balancing (TAB). TAB is a systematic method of calibrating the HVAC equipment to meet the performance requirements that were set in the system design and construction documents. It is done by creating a custom checklist and documenting the installed equipment. This is the only way to verify that the system is operating within its factory specifications.

This is a critical step, and it will help your unit operate at peak efficiency for the long term. Without it, your air conditioning unit may be consuming more energy than necessary, shortening its lifespan and resulting in higher utility bills and discomfort.


If you want your air conditioning system to work properly for a long time, it is important to take good care of it. This is why you should schedule regular maintenance checks from a qualified HVAC professional. A professional will be able to identify any potential problems before they become serious and expensive. This can also help save you money by preventing energy waste.

During a maintenance check, a technician will examine the evaporator coil and drain line for signs of clogs. They will also test the compressor and refrigerant pressure. In addition, they will inspect and clean the outdoor unit for signs of dirt, debris, or rust. A maintenance service should also include cleaning and flushing of the interior ductwork.

A professional will vacuum the air conditioner and clean the coils and the condensate drain pan. This will remove any moisture and oil from the system. They will also clean the suction and liquid lines using a special tool. In order to do this, they will need to remove any furniture or other items that are blocking the path of the lines. They will also make sure that the lines are not too close to beams or ductwork and in a route that is easy to access. In some cases, this process may require a specialized machine.

The technician will also replace the outdoor pad if necessary. The pad should be level and made of gravel or a vibration-absorbing composite. If the ground is too soft, it will cause the air conditioner to vibrate and wear out faster. It is also a good idea to add a layer of gravel under the unit if it is sinking.

Air conditioning units are complex ecosystems of electric wires and motors. They can be dangerous for homeowners to repair by themselves. In addition, they are highly sensitive to electrical problems that could lead to shorts in the circuits. It is a much safer option to leave these tasks to a licensed professional.

212 HVAC is a family-owned company that offers residential and commercial air conditioning services in the New York City area. Its technicians are NATE-certified, and they specialize in heating, ventilation, and air conditioning repair and installation. They offer a variety of other services, including duct cleaning, furnace repairs, carbon monoxide tests, and air quality assessments. They also have a 24/7 emergency response service.


If you suspect your AC unit is not working properly, a repair technician can diagnose the problem and suggest the appropriate solutions. For example, if your AC is running but not cooling, it may be because the evaporator coil or indoor fan are dirty. The air conditioner might also be low on refrigerant or have a bad motor. The underlying issue, however, is probably the thermostat or ductwork. If the underlying issue is severe, it will likely require replacement of the entire air conditioning system.

When you call for an air conditioner repair, the technician will usually start by checking the breaker panel and fuse box to make sure the air conditioner has power. If you find the breaker or fuse tripped or blown, flipping them back in position should resolve the problem. If not, there may be more serious electrical problems that only an AC professional can resolve.

The next step is to disconnect the existing refrigerant line set. This is a set of copper lines through which the refrigerant travels from the outdoor condenser to the indoor evaporator coil. The line sets are typically strapped to the bottom of floor joists, so you will need to remove them in order to access the new air conditioner. A new service disconnect is then installed to protect the new air conditioning system.

After the disconnect box is replaced, your HVAC technicians will uncrate the new air conditioning system and check it for damage. They will then install a new service valve, refrigerant lines, and a new electric disconnect box. Once these are in place, the outdoor unit will be lowered onto its pad and attached to the new wiring components. Then, the new refrigerant line set will be welded to the appropriate service valves and to the new electrical disconnect.

Air conditioners are expensive to repair, and costs can vary depending on which part of the system is faulty. For example, a capacitor or contactor will be more inexpensive to replace than a condenser fan motor, which could cost several hundred dollars. It is a good idea to schedule maintenance in spring, before the hot summer months arrive. This will help keep energy costs down and ensure the efficiency of the air conditioner.


Stefanie Roberson