How To Select The Correct Thermostat For Your AC Unit

Most ducted reverse cycle air conditioner buyers want to use a temperature control system with the AC device. Different systems are available for this purpose. Information about all these options has been provided below.

The Basic Controller

When you buy a reverse cycle air conditioning system, it will come with a built-in controller with a thermostat to read the AC temperature. The unit reads the temperature from the controller or airbox of the AC. The temperature inside the return air box may not represent the room temperature accurately. The room may be cold, but the air that comes back to the return air box after recirculating may have become warm when it reaches the box. It means the air-conditioning system will keep running. For example, the controller may have been set at 22 degrees, but after the air has reached the return air box, its temperature may have reached 30 degrees. It causes the AC system to keep running. What it means is that your air conditioner will keep running even when people inside the room are feeling cold. This problem can be solved in two ways. The first option is to increase the temperature of the controller. This way it is forced to cycle off faster. Keep in mind that the controller temperature setting is generally not precise. It is set on a scale. For example, if you set the temperature to 22 degrees, it may not cool the room up to 22 degrees. Many people use the second option to place a fixed constant close to the return air grille. As its name suggests, the setup is designed to remain always on. It lets the conditioned air go back to the unit’s return air box, helping the system cycle off easily. In such a case, if you are using the system only for the bedrooms that are further away from the return air box, the air coming from the rooms will overheat before returning to the return air box. The fixed constant bleed air into the grille directly, making the system cycle off. It reduces the running cost of the AC system as well.

VAV AC Controller

Variable Air Volume unit for the AC is another controller system for controlling the temperature of AC. The zone motors of the ducted reverse cycle AC system handle the temperature control process. In this case, a zone refers to a set of blades. When air is not needed for a room, the blades close the ductwork. For example, if the bedroom AC unit is turned off, the blades close the air gateway and restrict the airflow to the ductwork and then to the bedroom. Similarly, the blades will open when you need air. It allows the air to pass through the diffuser and reach the room. A VAV system works differently. In place of the blades closing or opening, they constantly adjust the opening percentage as required. The adjustment controls the airflow going into the room. It helps control the room temperature. For example, when a room’s temperature is about 30 degrees and the VAV controller in the room has been set at 22 degrees, the cool air rushes in to cool the interior. Once the room temperature reaches about 22 degrees, the blades start closing to stop the airflow and maintain that level. When the interior temperature increases and goes above 22 degrees, the adjustable blades open again, allowing more airflow to bring back the temperature to 22 degrees. This continuous process helps maintain the room temperature at the required level. A VAV controller is the most basic AC temperature control system. It is an economical option to control the temperature of a few rooms. It is different from the VRV AC system with several walls or head units that run from one large outdoor compressor.

Complete AC Temperature Control

A fully ducted AC temperature control system works similarly to a VAV system. Each room has its controller, which reads the temperature and then adjusts the closing and opening of the blades to cool or heat the room. A full temperature control system controls the temperature of the whole house and not only a few rooms. It provides the best comfort for everyone because each room’s temperature can be controlled individually to suit the requirements of the people in a room. It is affordable and economical to run compared to the standard systems because it helps save more energy. The system switches off when the room reaches the set temperature, allowing the AC to cycle off. The running cost comes down substantially with this efficient temperature control system.

The Reasons to Select a Temperature Controlled Air Conditioning System

The advantage of an AC temperature control system is that it allows every user to set the desired temperature. Everyone has a different temperature requirement based on various factors like age, body, and health. One temperature suitable for one person may not be comfortable for another person. Everyone wants to set the room temperature according to their needs and preferences. Some other factors also determine what temperature is best for a room. They include the heat load of devices and people present in the room, the clothes people wear, and the side of the house facing the sun. A temperature control system is designed to consider all these factors and adjust the room temperature accordingly. This simple and inexpensive system allows everyone to control the room temperature based on their cooling and heating needs. However, these systems are not designed to cool and heat at the same time. If the AC is set for cooling, it will only cool the interior. If you want to heat one room and cool another, the AC system cannot do so. You will need separate AC systems for different rooms for such a requirement. Consult a professional air conditioner consultant or technician before installing any air conditioning system at your place. The professional will audit your rooms and determine the best AC system according to your cooling and heating requirements.