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The Three Main Parts of HVAC
Hvac Lexington KY professionals help homeowners determine system preferences based on climate and home comfort requirements. They also provide routine maintenance and troubleshoot problems like a clogged air filter or improper refrigerant levels.
Performing routine preventive maintenance helps keep energy bills low. It also adds years to the life of the unit.
When you think of HVAC, your mind probably goes to air conditioning units. However, the term encompasses a wider system that helps keep your home comfortable during every season. The three main parts of an HVAC system are heating, ventilation and air conditioning. Understanding how each part affects your home comfort can help you determine what unit is best for you.
Your system will include a furnace or heat pump and ductwork for distributing air throughout your home. The equipment can be powered by various types of fuel, including electricity, propane gas and heating oil. Depending on the type of heating system, it may use various methods to warm up your home, such as conduction, radiation or condensation.
The thermostat is the portion of your system you interact with most. It controls your heating and cooling, and it is usually installed in an easily accessed area. It can be manually set or programmed to your specific preferences. The system also includes a blower motor to circulate the conditioned air through your ducts.
Ventilation is one of the most important aspects of your home’s HVAC system. It is responsible for removing unwanted contaminants from your indoor air and bringing in fresh air. It is also the primary source of humidity control in your home.
The ventilation portion of your HVAC system is comprised of the ductwork and vents throughout your home, as well as the evaporator coil in your air conditioner. The evaporator coil draws heat from the air in your home when your thermostat is set to a lower temperature, which cools down the air before it is funneled back into your home through the ducts. This process is repeated over and over again, until your home has reached the desired temperature. The air conditioner is also equipped with a compressor, which pumps refrigerant to draw heat out of the indoor air and disperse it outdoors. The air conditioner is the primary source of humidity in your home, as well.
When most people think of HVAC, they immediately picture air conditioning. After all, these systems are what keep us feeling warm and cozy in the winter and cool and refreshed during the summer. But that’s just a small part of the HVAC system. These systems also provide ventilation and filter and clean indoor air. They even help with moisture control and oxygen replenishment in indoor spaces.
There are different types of HVAC systems, and each has its own unique set of features and benefits. However, they all share the same essential components.
Heating systems in HVAC equipment are designed to warm a space or specific area of the home by using conduction, convection or radiation. They can be powered by electricity, propane gas or heating oil. They can also use a variety of resources, including sunlight, to generate heat.
A furnace, boiler or heat pump is the most common heating source in homes today, but there are also a number of other alternatives, such as geothermal systems and solar energy. Regardless of what type of heater is used, the goal is to make the space comfortable and healthy for occupants.
The cooling aspect of an HVAC system is much more complex than the heating portion. While it is important to maintain an adequate temperature for comfort, it’s equally crucial to control humidity levels in order to protect sensitive equipment like computers and electronic devices.
Most people understand that a traditional air conditioner uses refrigerant to cool the home by removing heat from indoor air and then blowing it outdoors. Other systems, such as a heat pump, work by grabbing the ambient air temperature and using it to lower indoor temperatures.
The ductwork that carries the heated and cooled air throughout your home is another key component of your HVAC system. It’s important to keep these ducts clean and free of obstructions in order to maintain proper airflow. The thermostat is a vital part of the HVAC system as well. It tells the rest of the system what temperature you want the room to be and sends a signal when the desired temperature has been reached.
Ventilation is the part of HVAC that deals with moving air into and out of your home. It’s important for many reasons, including keeping your home at a comfortable temperature, and also removing harmful substances that accumulate inside your home.
In the past, old fashioned architecture and open windows provided plenty of natural ventilation in homes, schools, businesses, and public buildings. Now, most new buildings are much more tightly sealed and rely on mechanical ventilation systems to keep the building healthy and breathable.
When you don’t have enough fresh air exchange, your body doesn’t get the oxygen it needs to work properly. This can result in fatigue, loss of concentration, and a host of other problems. Ventilation can replenish your oxygen levels, remove odours, and decrease humidity levels. It can even remove toxic gases like carbon monoxide.
The other reason ventilation is so important is because it helps your HVAC system to do its job of heating and cooling your home. If you have poor ventilation, your furnace and air conditioner will struggle to keep up with your energy needs because they will be working much harder. This means that they will use more fuel, and you’ll spend more money.
Your HVAC system uses ventilation to bring in air for heating or cooling and then direct it through your home’s duct system. This air is either heated or cooled by the furnace or AC unit, depending on the season and your needs. It is then circulated by the air handler, which moves warm or cool air through your house’s duct system and into each room.
The air is drawn into the air handling unit by a fan, and then it is sent through filters where particles that may be harmful to your health are removed from it. The filtered air is then sent back into your house through another fan. The system also has an evaporator coil, which is used to cool down the air when you want your home to be cooler than normal. It works by using the same process as the condenser coil to absorb heat from the air, transport it, and then return it to the evaporator coil.
All of your home’s drains and pipes are connected to the main sewer line. This vital pipe is responsible for taking wastewater and sewage away from your home, carrying it to the public sewer line in the street and then to the local sewage treatment plant.
Sewer systems are designed for ease of operation and maintenance. They usually include relatively small-diameter pipes that are buried under the ground and constructed of vitrified clay, asbestos cement or concrete; cast iron or steel for larger systems; or ductile iron for force mains. Joints between pipe sections must be tight enough to prevent leakage of sewage or groundwater into the pipeline, and access points called manholes are located periodically over the lines for cleaning, inspection and repair.
Since sewage is carried downhill by gravity, the main sewer lines are often routed in low-lying areas to minimize their elevation above grade. When the line reaches its destination, it’s pushed through a series of increasingly larger pipes until reaching the treatment plant. For buildings that do not connect to the main sewer, pumps or lifts may be used to move the wastewater.
Clogged, or “backed up” sewer lines are a common and dangerous problem. While some clogs are caused by grease, soap scum and hair that find their way down drains, many are the result of improper use or care of plumbing fixtures and drains. The best defense against a clogged sewer line is to know the warning signs and practice preventative maintenance.