HVAC systems – What is an HVAC system in the UK?

HVAC UK – What does HVAC stand for?

HVAC is a rarely used term in the UK, it has started to creep in though from our American friends over the pond. HVAC isn’t as complicated as you might think.

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So, What does HVAC stand for? HVAC stands for heating, ventilation, and air conditioning. It is responsible for heating or cooling a building. It also allows for moisture escape by providing proper ventilation.

You may have seen HVAC pros on Google too, these are essentially Gas Safe registered heating engineers who are covered by this term. Check out our guide to home heating and find out how much a new boiler cost now.

What does an HVAC unit look like?

HVAC units come in many sizes and shapes, each offering different benefits depending upon their design and where they are being used. You can combine any combination of these:

  •  Heating & oilers include gas, hydrogen ready, oil, and electric.  
  •  Ventilation Ducts and circulation of moisture ventilators
  •  A/C units – Air conditioner units  

All HVAC units do not have to be air conditioning units. It is more a broad term that covers heating or colling a home or business. Air conditioning units can still be included under the HVAC umbrella. It’s important to remember that this is a much larger term. It can be viewed as an umbrella term that covers all interrelated air control systems.

Boiler for heating

Some HVAC systems have heating components that heat up the property such as a boiler. This can be natural gas, oil, LPG, electric boilers and more. This allows for more comfortable living in colder months. A central heating system heats your home and is classed as the HVAC system.

To heat a building such as a home, office or any building, a boiler or heat pump is used. You can find out which is the best combi boiler right now for any home heating solutions

To raise the temperature in a room, the central heating system pumps the water through pipes. You can heat properties by using hot air distribution to different rooms. The central HVAC console can regulate temperature and heat in specific areas.

Air conditioning

Air conditioning system plays a vital role in keeping buildings cool in summer. They re not that common in homes in the UK as the termperatures do not demand them. There are many benefits to air conditioning systems in offices and biilding though where there are a gathering of people. Air conditioning is used to reduce the temperature in an environment, making it more bearable. It also regulates humidity and protects the contents of buildings.

There are many air conditioning system options available that will suit your specific needs and air conditioning engineers can install a unit in no time.


The HVAC system components’ ventilation will ensure that the building is constantly circulating fresh air. This is alot more specific to buildings, but if you have a full HVAC system in a larger home then this is what will also happen. The HVAC control system replaces indoor air with fresher air outside through a ventilation exhaust unit.

The system’s ventilation improves oxygen levels and air quality. You’ll always be breathing clean, fresh air because the system has an inbuilt filter.

Types of HVAC systems

There are many types of HVAC systems. You may require one type or another depending on your needs. Generally, most people in the UK will be looking for heating solutions such as boilers for their homes. There is a wealth of options when it comes to boilers.

Air conditioning equipment is less common in homes, and there are also different types, so you should always do your homework before you make any major decisions, it is important to thoroughly research the various types. similarly, if you are dealing with gas you must use a Gas Safe registered installer

Split system heating and air conditioning

This type of HVAC system is common and includes different components located inside and outside the property. These are the most likely type of systems and are easy to install by an experienced engineer. You could have them both installed at separate times too.

The split system usually includes an air conditioner located outside the property and a fan/coil within the property. The ductwork is the means by which air is transported to different rooms in a property. Split system designs are more efficient and use less energy. This allows for proper air cleaning with air purifiers.

Hybrid split system

Although hybrids look similar to the heating/air conditioning split system, they have their own unique characteristics. Using two different types of fuel with this system makes them a very green choice as they are efficient and can switch between electric and gas power depending on the need.

The upgraded technology of using two different fuel types for energy efficiency allows property owners more control over how they heat their homes, and it can also reduce energy costs.

Hybrid split systems use thermostats in addition to traditional ductwork. However, you have greater control over energy consumption and bills management.

A split system that is duct-free

Although this system has high installation fees, ductless air conditioning systems offer many benefits. This system does not require individual units as it is duct-free.

This will give you more control over which room is cooled and when. It can also be a case of only swithing them on when the room is in use, along as they are tunred off when rooms are left, they can be a far more economical way of keeping rooms cool.

These units are expensive and will be visible in every room but they are very good option. If you have larger properties (such as hotels or business buildings), they can work well and pay for themselves over time.

The main advantage of a duct-free modern air conditioning systems, is that energy will not be wasted in unused rooms. This allows for occupied rooms to remain at the ideal temperature. These systems are expensive to repair or replace damaged parts. It is important that you maintain them with annual services and that they are used properly.

How do hvac systems work?

These three functions are interrelated in an HVAC system, especially when it comes to providing indoor air quality and thermal comfort. Although your heating and air conditioning systems are often the most complex and complicated in your home, you will soon notice when they stop working.

If you are considering installing and maintaining HVAC systems then you should know the nine main components of your HVAC system: the filter, air return, exhaust outlets and ducts. Also, you need to be familiar with the outdoor unit, compressor, coils, blower, and compressor. If you are familiar with these it will save you time and money if your HVAC systems start to not work properly

Air Return

Your system’s air return marks the beginning point of your ventilation cycle. This returns takes in air and draws it through a filter before it is passed into the main system. Pro tip: Dust and debris can build up on filters so make sure you dust them often.


The filter is the second component of the air return through which air is drawn. Pro tip: Keep your system in top shape by changing your filters often.

Exhaust Outlets

The exhaust outlets are where the heat exhaust is expelled. Pro tip: Make sure to inspect your chimney flue and vent stack every year, and tune it up if needed.


Your ducts are channels through which heated or cooled air flows. Pro tip: Keep your ducts clean every two to five years to maintain a working environment.

Elemental Electricity

Although this part of the system may be more difficult than others, most problems start here. Pro tip: Check for dead batteries or a tripped fuse in your thermostat if something isn’t working.

Outdoor Unit

This is the most common part of an HVAC system that you will think of when people mention it. This is where you will find the fan that provides airflow. Tip: Make sure your fan is free from vegetation and debris. It can cause serious problems if they are inhaled.


The compressor, which is part of an outdoor unit, converts refrigerant into liquid and sends it back to the coils. Pro tip: Check your compressor if something isn’t working right. This is often the root cause of system failures.


Coils are another component of an outdoor unit. They cool the air as it passes by with a little refrigerant. Pro tip: Make sure to check your coils every year. You may need to replace your refrigerant and filter if they freeze.


The blower pulls warm air through the main part of the unit. Pro tip: The more efficient this air flows, the better your system will last.

A HVAC system can provide many benefits.

All types of HVAC systems have their advantages, it just depends on the type of building or installation you require and how often or little you will be using it.

Improved indoor air quality

There are many HVAC systems that can be used to ventilate a property’s environment. Air filters and fans improve air quality and make sure that the temperature inside is comfortable and consistent.

Higher Energy efficiency

With more advanced technologies, energy efficiency can be improved. New thermostats make it easier to monitor and control energy consumption. This ensures that you don’t waste energy in unoccupied rooms, which results in more accurate and efficient results.

Money-saving HVAC systems

You’ll save money by having more control over when and how you use it. Even though installation costs are high, you will see a return on your investment. If you are selling your property, an HVAC system could increase its value.

Are HVAC air conditioning systems any good?

HVAC systems are more popular in the UK for large buildings such as hotels and business centers. The installation cost can be expensive due to the combination heating, ventilation, and air conditioning functions.

What is the Difference Between HVAC and Air Conditioning?

Surprisingly we get this question quite often. What is the difference between HVAC, and air conditioning? Air conditioning is the final part of HVAC, but they can be interchangeably used to refer to any heating or cooling device within a home. Air conditioning is just one piece of HVAC.

HVAC system types – Need more information?

We hope that our HVAC guide has helped you to become more familiar with the various types on the market. Our engineers are available to answer all your questions about air conditioning systems. We understand that there is so much to consider.

If your looking for heating solutions or an HVAC pro for installing a new boiler then simply click get a quote for a fixed price boiler installation price in under 20 seconds. If your looking for air conditioning, we recommend you compare online for the best prices.

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