D&G Air Conditioning Blog

WHAT SIZE AIR CONDITIONING DO I NEED?

Wed, 18 Mar 2026 13:16:38 GMT

Choosing the right size air conditioning unit is one of the most important decisions when installing a new system. Too small, and it won’t effectively cool or heat your space. Too large, and you could end up wasting energy and money.

In this guide, we’ll break down exactly how to choose the right air conditioning unit size for your home or business in the UK:

1. Why size matters...

Air conditioning isn’t one-size-fits-all. The size of your unit determines how efficiently it can regulate temperature.

Undersized units will struggle to reach the desired temperature and run constantly
Oversized units cool too quickly without properly conditioning the air, leading to inefficiency and higher bills

Getting the correct size ensures:

Better energy efficiency
Lower running costs
Consistent comfort all year round

2. What is 'size' in air conditioning?

Air conditioning units are measured in kilowatts (kW) in the UK. This refers to the cooling (and heating) capacity of the system, not its physical size.

As a general guide:

Small room (bedroom / office): 2.0 – 2.5 kW
Medium room (living room): 3.5 – 5.0 kW
Large open space: 5.0 kW+

(However, these are only rough estimates)

3. Key factors that affect the size you need:

Several factors influence the correct unit size for your space:

1. Room Size

The bigger the room, the more powerful the system needs to be.

2. Ceiling Height

Higher ceilings mean more air to cool or heat.

3. Insulation

Well-insulated properties retain temperature better, reducing the required capacity.

4. Windows & Sunlight

South-facing rooms or large windows increase heat gain, meaning you may need a more powerful unit.

5. Number of Occupants

More people = more heat generated.

6. Equipment & Appliances

Offices, kitchens, and commercial spaces often require higher capacity due to heat-producing equipment.

4. A simple rule of thumb...

A common starting point is: Around 100 watts per square metre

So, for example:

A 20m² room ≈ 2.0 kW unit
A 35m² room ≈ 3.5 kW unit

But this should always be adjusted based on the factors above.

5. Residential vs Commercial Requirements:

Homes

Most UK homes benefit from wall-mounted split systems, sized for individual rooms or open-plan areas.

Businesses

Commercial spaces often require:

Larger systems
Multiple indoor units
More precise calculations

This is especially important for offices, retail, gyms, and salons where comfort directly impacts staff and customers.

6. Why You Shouldn’t Guess...

Choosing the wrong size system can lead to:

Higher energy bills
Uneven temperatures
Increased wear and tear
Shortened system lifespan

That’s why a professional assessment is always recommended.

Get the Right Size with Expert Advice

At D&G Air Conditioning, we carry out detailed assessments to ensure you get the perfect system for your space, no guesswork involved. We consider everything from room layout to insulation and usage, so your system performs efficiently all year round.

Get in touch today to book a free consultation and find the right air conditioning solution for your home or business.

Call us on 07979 183339 email us at enquiries@dgairconditioning.wales or get a quote direct here.

SIGNS IT'S TIME TO REPLACE YOUR AIR CONDITIONER

Mon, 10 Mar 2025 11:23:27 GMT

Your air conditioning plays a crucial role in keeping your home or workplace cool and comfortable during the hottest months, or warm during the winter. However, like any appliance, it won’t last forever. Eventually, repairs become less effective, and keeping an outdated system running can cost more in the long run.

Recognizing the signs that it’s time for a replacement can help you avoid high energy bills and unexpected breakdowns. Here’s how to know when it’s time to upgrade to a new AC system...

1. Your AC is more than 10-15 years old

Most air conditioners last between 10 to 15 years with proper maintenance. If your unit is approaching or has surpassed this age, it may not be as efficient as newer models. Older systems also tend to require more frequent repairs, making replacement a smarter financial choice.

2. Frequent and costly repairs

Are you calling the engineer more often than before? If your AC needs frequent repairs, those costs can add up quickly. Instead of pouring money into an aging system, investing in a new unit can provide better efficiency and reliability.

3. Rising energy bills

A sudden spike in your energy bill could mean your AC is working harder than it should to cool your home. As air conditioners age, they lose efficiency, leading to higher electricity consumption. A newer, energy-efficient model can help reduce your utility costs.

4. Uneven cooling or weak airflow

If some rooms in your house are too hot while others are too cold, or if the airflow feels weak, your AC might not be functioning properly. This could be due to failing components or an overall decline in performance.

5. Strange odours or noises

Loud noises like grinding, banging, or squealing are signs of a struggling AC unit. Similarly, musty or burning smells can indicate mold, electrical issues, or internal damage. These are clear signs that your system may need replacing.

6. Excessive humidity

A properly functioning AC not only cools your home but also helps control humidity. If your home feels damp, sticky, or has excessive moisture buildup, your unit may not be operating efficiently.

7. Refrigerant leaks

If your AC is leaking refrigerant, it may be a serious issue, especially in older models that use outdated refrigerants like R-22 (which is being phased out). Instead of repairing a refrigerant leak, replacing your AC with a modern system may be a better long-term solution.

8. Poor indoor air quality

Your AC plays a crucial role in filtering dust, allergens, and pollutants from the air. If you’re noticing more dust accumulation, worsening allergy symptoms, or stale indoor air, your system may not be effectively filtering the air anymore.

Replacing your air conditioner is a big investment, but waiting too long can lead to higher costs, reduced comfort, and unexpected breakdowns. If you’re experiencing any of these signs, it might be time to explore newer, energy-efficient options that can keep your home cool while lowering your energy bills.

So if you're thinking about upgrading or getting AC in your home or work space, get in touch today for your FREE, no obligation quote.

If you invest in one of our systems we always make sure we provide you with the best system to suit your needs.

(We hope these points have helped, and for more handy tips you can read more in our blogs here. )

WHY PROPER AIR CONDITIONING IS ESSENTIAL FOR EMPLOYEE PRODUCTIVITY

Mon, 20 Jan 2025 13:28:56 GMT

When it comes to creating a productive work environment, the role of air conditioning often goes unnoticed. However, maintaining a comfortable indoor climate is more than just a luxury—it’s a business necessity. Research has shown that employees perform better, focus longer, and experience improved well-being in a well-cooled environment. Here’s why proper air conditioning is essential for boosting employee productivity and how it benefits businesses.

1. Optimum temperature promotes focus

Temperature has a direct impact on cognitive performance. Studies have found that the ideal indoor temperature for productivity lies between 68°F and 76°F (20°C and 24°C) . Temperatures outside this range can lead to discomfort, distractions, and reduced focus.

• Too Hot: Excessive heat can cause fatigue, irritability, and even physical symptoms like dehydration or headaches, leaving employees unable to focus on tasks.

• Too Cold: On the other hand, overly cold environments can lead to discomfort and frequent breaks to warm up.

Maintaining an optimal temperature allows employees to concentrate fully on their work, improving overall efficiency.

2. Enhances employee morale and comfort

Uncomfortable employees are unhappy employees. When the office climate is too hot or stuffy, frustration and dissatisfaction can quickly set in, leading to decreased morale. A comfortable workspace shows employees that their needs are valued, creating a positive work atmosphere.

Employees who feel cared for are more likely to be engaged, motivated, and loyal to the company—factors that directly contribute to improved productivity.

3. Prevents fatigue and physical strain

Working in a poorly ventilated or overly warm environment can lead to physical exhaustion, even during simple tasks. Excessive heat forces the body to work harder to regulate its internal temperature, which can result in:

• Increased heart rate

• Dehydration

• Reduced alertness

Proper air conditioning eliminates these stressors, allowing employees to maintain their energy levels throughout the day.

4. Supports technology and equipment

In today’s digital-driven workplaces, technology plays a crucial role. Overheated environments can negatively impact computers, servers, and other equipment by causing them to overheat or malfunction. A well-maintained air conditioning system not only keeps employees comfortable but also ensures that essential office equipment operates efficiently, preventing downtime and costly repairs.

5. Reduces sick days

Modern air conditioning systems are designed to improve indoor air quality by filtering out dust, allergens, and pollutants. Cleaner air means fewer respiratory issues, allergies, or illnesses among employees, leading to fewer sick days and a healthier workforce.

By investing in an AC system that prioritizes air filtration, businesses can reduce the spread of airborne illnesses, particularly in shared office spaces.

6. Boosts team collaboration and creativity

In an uncomfortable environment, employees are less likely to collaborate effectively. Sweating through brainstorming sessions or meetings can sap creative energy and make team discussions less productive.

Comfortable air conditioning fosters an environment where employees feel relaxed and energized, encouraging collaboration and innovation.

7. Tips for maintaining good air conditioning in the workplace

Regular Maintenance: Schedule routine maintenance to ensure the system is functioning efficiently and doesn’t disrupt daily operations.

• Zoning Systems: Use zoned air conditioning to cater to different temperature preferences in various office

If you are looking to get air conditioning in your workplace, get in touch today for your FREE, no obligation quote.

We can supply, install and maintain a system in your home or work environment, so please get in touch to talk to us today or get a quote direct here. If you invest in one of our systems we always make sure we provide you with the best system to suit your needs.

We hope these points have helped, and for more handy tips you can read more in our blogs here.

TOP TIPS TO KEEP COOL IN A HEATWAVE

Thu, 20 Jul 2023 09:25:52 GMT

As the UK dips in and out of some serious heat waves this summer, and most people don't have the luxury of owning air conditioning in their home or office, we wanted to share some top tips to help keep you cool and safe in the heat...

1. Stay shaded

Avoid being outside in the direct sun if possible (especially with young kids and animals) and keep indoors or in the shade where you can.

2. Stay hydrated

It's simple but SO important - water, soft drinks, lollies keep you hydrated and cool you down.

3. Block out the sun

Keep blinds or curtains closed as much as you can to help keep the room cool and only open the window when the temperature drops. If it's really hot outside then opening the window will only let the warm air in.

4. Dress accordingly

Too many layers will make you feel even hotter. Wear light colours made from breathable, cotton material.

5. Have a quick dip

Have a nice luke warm bath or shower before bed as it will help the body cool down naturally allowing you to sleep more comfortably. Having a paddling pool in the garden or quick dip in a cool shower will also cool you down throughout the day.

6. Invest in a decent fan

There are many different types of fans out that will help cool you down and keep air moving round the room. You can also place it by an open window facing out to direct the warm air out of the window.

7. If you have a baby...

DO NOT place muslins or blankets over prams. This is such a common thing to do and yet SO DANGEROUS! Instead of keeping your baby cool and shaded, this will actually create a greenhouse effect and build up dangerous levels of heat inside the pram. Instead, use a clip on parasol/ sunshade with open sides to allow ventilation throughout. Always be checking on baby and in temperatures over 26 degrees aim to keep any time outside in the pram to a minimum.
If you have a young baby, place a thin muslin between you and baby's skin when holding, cuddling or feeding to prevent overheating. This will keep you both cool and comfortable.

8. And if you want to invest in Air Conditioning...

Get in touch today for your FREE, no obligation quote.

If you would like to find out how we can supply, install and maintain a system into your home or work environment, please get in touch to talk to us today or get a quote direct here. If you invest in one of our systems we always make sure we provide you with the best system to suit your needs.

We hope these points have helped, and for more handy tips you can read more in our blogs here.

WHY YOUR AIR CON NEEDS A SERVICE

Thu, 04 May 2023 12:05:36 GMT

It's simple really, like any other piece of equipment your air conditioning needs regular maintenance and repairs to make sure it continues to work properly. It is also important for prolonging the efficiency of the system for longer.

So with that in mind, let us answer a few commonly asked questions about the importance the maintenance services for your AC:

1. Are they necessary?

Definitely!

2. Why is important to get your AC serviced?

There are so many reasons why it is important to get your service booked in and make sure your AC is working how it should be:

✔️ It clears any blockages
✔️ It maintains your system's efficiency
✔️ It will increase overall performance
✔️ Safety checks are crucial with this type of equipment
✔️It increases unit lifespan
✔️ It helps to avoid faults and expensive repairs
✔️ It preserves warranty

3. What happens if you don't service your AC?

If you don't service your AC, the system will not work as it's supposed to and eventually, it will grind to a complete halt and potentially cause health issues. A simple maintenance service won't take long and will be worth it when you're not having to fork out to get your system replaced.

4. Signs your AC needs a service

✔️ Poor airflow from clogged or broken filters
✔️ Inefficient cooling

✔️ Frequent on/off cycles
✔️ Unpleasant odours

✔️ Increased or unusual noise
✔️ Water leaks

5. How often should I book a service?

We recommend booking a service annually to maintain its efficiency and prolong it's lifespan.

6. How do I book a service?

Give us a call and we can get you booked in. Speak to us on 07979 183339 or email us at enquiries@dgairconditioning.wales

We hope these tips have helped, but of course, you can read more in our blogs here.

OFFICE INSTALL TRAVIS PERKINS

Thu, 20 Oct 2022 10:23:09 GMT

We recently completed another job for Travis Perkins, this time in their newly renovated offices in Swindon.

We were asked to provide a heating/cooling system to regulate their new workplace which included a breakout area, boardroom, Managing Director's office and PA's office.

We supplied and installed a 14kW twin system to the large boardroom, two 7kW split systems to the breakout area and MD office, and a 3.5kW split system to the PA office.

We fitted compact ceiling cassettes in the centre of each room to achieve a wider cooling range.

The wind-free systems we installed effectively maintains a comfortable level of coolness without the unpleasant feeling of a cold draft - an issue for many employees.

Some outdoor units were mounted at high level due to access issues below. We also fitted drip trays and condensate drains to stop any condensate icing on the path below in cold ambient temperatures.

Take a look at some images below:

View images of the project below:

If you are looking for something similar in your workspace, feel free to get in touch today on 07979 183339 or contact us here.

TOP TIPS FOR USING YOUR AIR CONDITIONING EFFICIENTLY

Mon, 17 Oct 2022 13:52:41 GMT

Having air conditioning can bring so many benefits ( see previous blog ) , bu t, if not used correctly you can be in danger of throwing money down the drain and all that lovely warm or cool air literally out the window.

But no need to panic though... here are our top tips for getting the most out of your system:

1. Keep the temperature consistent

When heating your house, the best temperature to set your air con to is around 18-20 degrees. Altering the temperature doesn't necessarily make your house warmer and most certainly isn't energy efficiency.

2. Make sure your space is draft proof

Help to keep the heat or cool air inside by keeping all windows, doors, curtains and blinds closed. This will improve the efficiency of your aircon as well as keeping your home or office warmer/ cooler for longer.

3. Use a timer

Set your heating to come on an hour before you get out of bed in the morning, or before you come home from work so it is warm for when you are actually in and moving around the house. This way you can save energy and the house can be the optimum temperature at the times you need to it.

4. Maintain your system

Make sure you get your air con system serviced regularly to keep your system working efficiently. If the filters and coils get clogged with dust, the unit will potentially break down as well as cause health issues. Checking them yourself or just give us a call to book a service.

5. Use Smart Thermostat or AC Controllers

By using smart thermostats and AC controllers you can decrease your electricity bills by up to 25%. By telling your thermostat when you want your system to be active along with your desired temperature, it will efficiently maintain the best room environment for you at the right times.

6. Think about zones

This is something that not many people consider doing but such a great method for using your air con efficiently and reducing bills. By setting specific temperatures in designated areas, you won't have to heat or cool the whole building when using a specific space/ room. If you aren't using a certain area of your house or office, don’t heat/ cool it and save energy.

7. Use the Fan mode

Try using the other, less energy-intensive modes, such as the fan mode when using your system. When it’s not so hot and you only require a refreshing breeze, the fan mode can be just as effective (and more energy efficient).

8. Position your Thermostat correctly

Thermostat placement is so important when it comes to regulating your temperature indoors. As the thermostat reads the temperature from its surroundings and then makes changes, it makes sense to ensure it's not positioned near a door or window, near air vents, or under direct sunlight. Placing in an incorrect position will result in false readings and an undesired room temperature.

We hope these tips have helped, but of course, we are always here to help if you are ever unsure or want some advice.

If you invest in one of our systems we always make sure all these points have been considered and can provide you with the best system to suit your needs.

So, if you would like to find out how we can supply, install and maintain a system into your home or work environment, please get in touch to talk to us today. Call us on 07979 183339 email us at enquiries@dgairconditioning.wales or get a quote direct here.

10 BENEFITS OF HAVING AIR CONDITIONING IN YOUR HOME OR WORK

Wed, 13 Apr 2022 08:41:42 GMT

It is becoming more and more necessary to have an air conditioning system in your home and work environment.

Many factors (such as global warming and air pollution) contribute to us being surrounded by unhealthy air which can affect our health in many ways.

If you’re in doubt about having air conditioning in your home or office, read the list below to find out the many benefits:

1. Better air quality

Air conditioning systems circulate and filter the air, removing pollutants and mould to create a more optimum environment. Dust and bacteria in the air can promote coughs, colds, fatigue and headaches.

2. Improved productivity

It’s simple really, with a more comfortable environment, the more contented we are and the clearer our minds will be! This is beneficial for both our home and work life.

3. Reduced humidity

High humidity encourages dust mites, mould, heatstroke and dehydration. The damper the home, the unhealthier the living conditions.

4. Reduced Asthma Attacks

A/C systems filter dirty air which lowers the levels of pollen, mould, mildew, dust mites and other allergens building up that can lead to asthma attacks.

5. Improved sleep

We actually sleep better in cooler conditions, so when the warmer months approach, having a system to control the temperature is ideal.

6. Reduced noise

We are more likely to keep the doors closed when there is an A/C in the room, therefore keeping it cool and quiet.

7. Less insects/ parasites

A/C is effective in keeping bugs at bay because they desire a warmer climate. If your body temperature is cooler, you are less desirable to mosquitos. Not only does air conditioning protect you, but also keeps your house clean from bugs.

8. Reduced risk of dehydration and heat stroke

Overheating due to the surrounding temperature can be prevented by air conditioning. The cool air lowers body temperature and reduces sweating.

9. Reduces odours

A/C keeps the smells from dirty air, cleaning chemicals or rotten food at bay by filtering it out with clean air. This also improves your health by avoiding chemicals in the air you breath.

10. Improves mood

Being able to control and maintain the temperature of the room will keep you cool when it's warm outside, and cosy and warm in the colder months. Overall, this will make for a happier, more comfortable you.

So, if you were ever in doubt, it’s safe to say that investing in an air conditioning system will benefit your health in so many ways.

If you would like to find out how we can supply and install a system into your home or work environment, please get in touch to talk to us today.

You can call us on 07979 183339 email us at enquiries@dgairconditioning.wales or get a quote direct here.

HOME INSTALL MAESYCWMMER

Fri, 04 Mar 2022 13:54:01 GMT

We recently carried out an installation of 4 x wall mounted Mitsubishi Heavy Industries split air conditioning systems to a beautiful home in Maesycwmmer.

The customer was looking for something discreet, modern, and efficient, and was especially not keen on having any sort of condensate pump kits fitted internally.

All wall mounted units were installed on external walls so all services could be taken out directly behind the units, leaving them with a discreet finish. We used white trunking to keep it clean and modern and match existing guttering and down pipes.

The customer was extremely happy with the neat and non-disruptive installation. All power supplies were installed by Kore electrical who we continue to work closely with.

View images of the project below:

If you are looking for something similar in your home, feel free to get in touch today on 07979 183339 or contact us here.

HOME OFFICE PORTH

Tue, 01 Mar 2022 16:25:10 GMT

Did you know that regulating the air around you in your working environment can make a big difference to your productivity…

Recently we were asked to provide an air conditioning unit in a new garden room/ home office for a client in Porth, South Wales.

We carried out a site survey, and due to the curvature of the room (and the customer requesting no visible pipework or trunking) we suggested a standing, 3.5kW air conditioning unit.

We are pleased to say the customer was extremely happy with how quickly the system creates a comfortable temperature, along with the neat and clean finish.

If you are looking for something similar in your home or office, get in touch today on 07979 183339 or drop us an email.

View images from the project below:

PLANET FITNESS TREDEGAR

Tue, 03 Dec 2019 13:36:04 GMT

Following the success of the Planet Fitness Aber-Bargoed installation, D & G Air Conditioning were approached to complete the full installation of Mitsubishi Heavy Industries Air conditioning to the new Planet Fitness gym in Tredegar, South Wales.

In order to serve multiple fitness suites throughout the gym, 11 different air conditioning systems were installed during a challenging installation period, ensuring the client’s strict four week deadline was met in time for the gym’s grand opening.

View images from the project below:

What our customer said

“D & G Air Conditioning delivered an excellent service and I couldn’t fault their professionalism. The engineers worked around the gym and clients to avoid disruption during opening hours. I would have no hesitation in using D & G Air Conditioning again and would always recommend.”

David Jones - Owner of Planet Fitness

PLANET FITNESS ABERBARGOED

Mon, 02 Dec 2019 13:43:21 GMT

D & G Air Conditioning completed the full installation of LG air conditioning systems at Planet Fitness Aberbargoed.

We were contacted by Planet Fitness to remedy the gym’s increasing temperatures during the summer months. Our client requested that costs were kept to a minimum without compromising on quality, therefore 10 varied air conditioning systems were installed to serve the multiple fitness suites, and a large open plan area throughout the gym.

We worked around the gym’s 24 hour opening time and completed the installation within a 3 week period.

View images from the project below:

PRITCHARD'S HOLDINGS LLANTRISANT

Sun, 01 Dec 2019 13:49:30 GMT

D & G Air Conditioning were recently asked to fit new air conditioning units to the offices at Pritchard’s Holdings, Llantrisant.

Our client required a system to keep their employees cool during the summer and warm during the winter as there was no other means of heating throughout the offices.

Following a site survey, we installed various types of air conditioning systems to suit the different types of buildings e.g. wall mounted systems were installed in the portacabin and ceilings cassettes were installed in the industrial units.

View images from the project below:

GARAGE CONVERSION PENALLTA

Wed, 20 Nov 2019 13:53:40 GMT

Our client needed a source of heating and cooling in his new garage conversion. D & G Air Conditioning sourced a cost effective and energy efficient system that was able to heat and cool the garage conversion quickly.

Our client was extremely happy with the outcome, particularly the feature allowing him to remotely control the system through a smart phone or tablet via WI-FI.