The Basics of HVAC

Learn the basics of home heating and cooling, including costs, key terms, products and basic maintenance.


Ductless mini-split systems are popular for their flexibility and space savings. They have an outdoor unit that houses the compressor and condenser, and an interior air handler. For professional help, contact HVAC Los Angeles now! 

As energy costs continue to skyrocket, a focus on efficiency is becoming increasingly important. This is especially true for HVAC systems, which often consume more energy than many other household appliances. Fortunately, making some simple energy-saving adjustments to your HVAC system can help you cut your energy bills significantly.

The best way to start reducing your HVAC energy consumption is by ensuring that your unit has a clean air filter. Over time, filters become clogged with dirt and debris, which forces your HVAC system to work harder to do its job. The best way to prevent this from happening is by regularly changing your air filter.

Another great way to reduce your energy consumption is by ensuring that your home is well-insulated. This will help to prevent cool air from escaping your home and warm air from entering it. You can do this by sealing any gaps in your walls and doors and adding insulation to your attic and walls.

If you are replacing your HVAC equipment, consider choosing a model with a higher SEER rating. While the initial cost of these units is typically more expensive, they can save you a significant amount on your energy costs in the long run.

Additionally, it is important to have your HVAC equipment properly sized. This will ensure that your system is running as efficiently as possible. For example, if your ductwork is too large, you may be losing a significant amount of energy in the form of wasted heat or cool air.

Finally, if you have any old, inefficient appliances in your home, be sure to get rid of them as soon as possible. Using inefficient appliances uses more energy and produces more waste, which can significantly increase your energy bills.

By implementing these energy-saving strategies, you can dramatically cut your utility bills and contribute to a greener future. Be sure to consult with an experienced HVAC professional if you need help getting started. They can provide recommendations for the most efficient products and handle the installation process with precision.

Space Saving

HVAC systems include a furnace, air conditioner or heat pump, ductwork and thermostats. They are responsible for heating and cooling your home, but they also help with ventilation, humidity control and removing harmful particles from the air. The world of HVAC might seem a little complicated and difficult to understand, but with the help of an expert dealer it can make sense.

Energy efficiency is a big part of the HVAC system, and it helps reduce utility bills and carbon emissions. Many systems offer energy-efficient options, including high SEER ratings, variable speed technology and smart thermostats. Energy-efficient HVAC equipment is often more expensive, but they can offer significant long-term cost savings through lower operating costs and maintenance requirements.

Proper system sizing and design are also critical for optimal performance and energy efficiency. Systems that are undersized may struggle to meet heating and cooling demands, leading to inefficient operation and increased energy consumption. On the other hand, oversized systems are more prone to short cycling and can contribute to poor indoor air quality.

Duct leaks can account for 25 to 40 percent of lost conditioned air, which makes the HVAC system work harder and drives up energy bills. Sealing and replacing leaking ductwork can improve energy efficiency by up to 20 percent.

The ENERGY STAR label is a universal sign of superior energy efficiency, and selecting HVAC products with this label can save money and help protect the environment. ENERGY STAR qualified HVAC systems are equipped with advanced features like variable-speed technology, programmable thermostats and zoning capability, which all contribute to energy savings.

Zoning systems allow facility managers to customize temperature controls for different spaces, reducing the need to cool unused areas and helping to conserve energy. They can also be used to automatically set temperatures higher when employees leave for lunch or after 4:30 p.m., so the space is ready when they return. Using a programmable thermostat or scheduling work orders can further save energy by only heating and cooling spaces that are occupied. This is especially important in facilities with multiple uses, such as warehouses and retail stores.


The goal of HVAC is to create a comfortable indoor environment that is neither too hot or too cold.

In designing a HVAC system to meet its objectives of energy efficiency and thermal comfort, the system designer must carefully consider personal factors that affect comfort. These include metabolic rate, clothing level and physical health. In addition, the design operative temperature, indoor air quality and the relative humidity of the space must be considered. The HVAC system must be able to satisfy these conditions in a range that is acceptable to the majority of occupants.

The ASHRAE standard 55 specifies that the design operative temperature should be between 68 and 78 degrees Fahrenheit (or 20 and 21 Celsius). In order to achieve these temperatures, it is important to have an efficient system. An efficient system will reduce the amount of energy used to maintain the desired indoor temperature, which in turn will cut down on overall utility bills.

When choosing an HVAC system, you should consider the size of your home and your budget. You should also take into account your preferences and lifestyle. For example, you may want a system that is quiet or has the ability to monitor humidity. A knowledgeable HVAC dealer can help you find a unit that is right for your home and meets all of your needs.

A new HVAC system can significantly reduce your energy costs. However, it is essential to do a load calculation before purchasing one. Load calculations ensure that the system you buy is sized correctly and can provide the proper amount of heat or cooling when it is needed. A poorly sized HVAC system will not operate efficiently and can lead to a number of problems, including increased operating costs and equipment failures.

The world of HVAC might seem complex and confusing, but you can get a handle on it by understanding the basics of the system. This will make it easier to choose a system that fits your needs and budget.


HVAC systems are like the lungs of your home; if they aren’t clean, it’s like living in a smoggy city. The dust and debris that builds up in a dirty HVAC system can trigger respiratory problems in asthmatics, as well as make symptoms of existing conditions worse. This is why it’s important to change air filters regularly, clean evaporator coils, and keep indoor humidity levels between 40-60%.

A good HVAC maintenance plan can prevent a lot of problems, but unexpected failures do occur. Having an emergency preparedness plan in place can reduce the risk of disruption to building occupants, minimize downtime, and ensure a quick response to the problem by your HVAC service provider.

Keeping your system in top condition can also help to protect equipment from corrosion, prolong its lifespan, and avoid costly repairs. An easy way to do this is by using a corrosion monitoring system, such as Hevasure, which can provide real-time water conditions and corrosion monitoring for closed circuit systems. It can monitor for both active and passive corrosion, as well as other contaminants such as hydrogen sulphide and ammonia.

For HVAC technicians, it is also important to prioritize their health and safety by ensuring they are fully trained and have access to the best equipment and tools. They should also have enough time to rest between jobs to avoid fatigue, which can lead to mistakes with the equipment and a greater chance of injury.

When working on a HVAC unit, remember to always power it off before performing any maintenance or cleaning tasks. This will prevent accidents from occurring, such as electrocuting yourself if you accidentally touch a live wire or a moving part. It is also important to use proper lockout and tag procedures when changing filters or dusting off evaporator coils to prevent accidental startup of the system.

Healthcare facilities can have complex HVAC systems with a variety of different equipment and piping. It is essential to consider the serviceability of these systems during construction planning, as this can have a significant impact on the cost and speed of repair or replacement.