How Do HVAC Thermostats Work?


Thermostats are essential components of HVAC systems without which they simply would not function. They help to regulate temperature, whether warmth or cooling is required. These components are designed to shut off automatically once the desired temperature has been reached.

These simple devices measure room temperature and compare it to the reading set on the dial. Its goal is to make both readings equal. Once you make an adjustment to the desired temperature, the device is expected to respond to the change.

Malfunctioning thermostats will prevent HVAC systems from working correctly. As such, if the HVAC equipment is used regularly, the thermostats need to be replaced frequently. Regular maintenance and servicing is therefore necessary regardless of the type of system you own.

The Importance of HVAC Systems

Whether you use commercial or residential HVAC applications the functions remain the same. Obviously there is more demand placed on systems used for larger areas where there are more people. The manufacturers of these cooling and heating systems take this into consideration so the right size unit is available where needed.

HVAC systems do much more than keep a room warm or cool. They often play an integral role in maintaining good air quality. This has significant implications for the health and safety of people who live and work in these buildings.

Airborne contaminants are common in many environments despite our best efforts. The comfort of people inside is often seen as the main concern but this in itself shows how well these systems often work. Users don't need to stop to think about air quality if they are functioning effectively.

Maintenance and Repair

Longevity is an important consideration for any type of equipment that is used regularly. Some brands will undoubtedly perform better than others but the cost of replacement parts is also a factor. Also, a part such as a control box built for one type will most likely not work with a different system.

Each component contributes to efficient functioning of the system and may occasionally become faulty. Generally, providers of such equipment offer long or short term service contracts. Users still have the option of seeking other options for maintenance if they wish.

To keep these systems running efficiently calls for identifying and diagnosing problems before major issues develop. Users should not open or otherwise try to undertake repairs themselves. This could cause further damage and may even void any warranty that is in place.

Malfunctioning thermostats will cause the room temperature to vary, sometimes drastically. This means that this one of the easier problems to detect. When this happens, the system should be shut down and serviced as soon as possible.

Thermostats basically feature two main components, the cover and the assembly, which contains other parts. Small parts such as the adjustment lever can be easily replaced when they become worn. Another important feature of the thermostat is the control box.

This part controls the on and off switch for thermostats in HVAC units. Another type of control box is like the brain of the entire system. It regulates the functions of the unit so that it runs properly.

Types of Thermostats

The five basic types are light sensing, occupancy, electromechanical, hybrid and digital. Many people are now in favor of programmable thermostats as they are considered to be more accurate. It is also felt that they are easier to operate and that offer savings on energy costs.

Digital types are especially favored for their backlit readouts which makes them easy to read and adjusted at any time. Many people are changing their thermostats for programmable digital ones.

With some guidance some people are capable of changing out these devices themselves. Thermostats are inexpensive when compared to the cost of the whole HVAC system. Understanding their importance and how to care for them could result in significant savings over time.

 


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