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What Do AC Filters Do?

What Do Those Air Conditioner Filters Do?

The job of the filter is to remove particles from the air stream to both keep the air conditioning system clean and to remove particles from the air.


Almost every air conditioning system has a filter upstream of the evaporator coil. This can be in the return grille or in special slots in the duct system and can be a fuzzy-looking or a folded paper filter.

As the filter does its job, it gets loaded with more and more particles. This is actually a good thing and makes the system more efficient, but it also increases resistance and reducing airflow. When this happens, it is time to change the filter. How long it will take to happen depends on how dirty the air is and how big the filter is.


If you don’t change the filter, air flow will decrease and the system won’t perform as well. Not only that, but if the filter is too dirty, it starts to become a source or air pollution itself.

If you take the filter out completely, you would solve the low air flow problem, but this victory would be short lived. The particles that the filter would have taken out will now build up on your evaporator coil and eventually cause it to fail. Replacing it with a new filter is a much cheaper option.

Winter Warming: Use Your AC in Winter

air-conditioning-unit-control-300x200Winter is here and keeping warm is now priority number one!

We’re going to start with the most obvious solution for keeping warm: wear an extra sweater or jacket.. And a hat! A lot of heat escapes from our heads.

Of course you can use your AC throughout the winter to control temperatures and help maintain a comfortable amount of warmth.

You may also experience a lot of humidity at a point during the winter where it collects on your windows. Turning on the AC would be an effective way to remove that water vapour. Sure you may have checked the fan to ensure its not blocked up with snow, or maybe you have a cover and simply removed it so you can fire the air conditioner back up temporarily.

The term air conditioning makes people immediately think of a system to cool you down in the heat of the summer or in hot climates. Many could not think why anyone would use winter air conditioning. What many people do not realise is that air conditioning is a term for a heating and cooling system that can be used all year round. Winter air conditioning does not mean freezing air is blasted into the home, rather that the air conditioning operates in a reverse cycle to warm the air. In fact, winter air conditioning is one of the most affordable and economical heating systems you can choose for your home or office.

Air conditioning helps by keeping the air in the home fresh and free from dust particles and other pollutants and can even help to control germs spreading. Ideal for allergy sufferers, your pets will no longer be making your guests sneeze or dabbing at their watering eyes.

All types of offices and retail spaces can benefit too. Research shows that with good quality air conditioning systems, productivity and efficiency improve. Workers also demonstrate better performance. Clearly apart from the other benefits, winter air conditioning to keep employees warm is every bit as important as keeping them cool in summer time.

5 Benefits Of Air Con For The Workplace

Professionally installed air conditioning systems have many benefits in the workplace from increasing employee productivity to improved general health. Let’s take a closer look:

1. Productivity

Studies have suggested that men and women prefer slightly different temperatures. The temperature that produces the most productivity is around 21.7 degrees to 22.2 degrees (71-72 degrees Fahrenheit). Be aware of seasonal changes and vary the temperatures accordingly.


2. Air Quality

Busy and bustling office spaces and workplaces are breeding grounds for coughs and colds. Air conditioned air spaces can reduce the amount of bacteria and dust particles, odours, and potential allergens as the filters purify the air.


3. Comfort 

Offices are often too cold and uncomfortable for employees. Maintaining the temperature is important and modern systems have the ability to respond swiftly to fluctuations in temperature. Highly sophisticated systems are able to recover heat from warmer areas of a room and redistribute to cooler areas, making them highly efficient systems.



4. Noise Pollution

As your system continually works by responding to the temperature of the atmosphere you wouldn’t be aware as the systems are almost silent. Staff will remain undisturbed and uninterrupted even when the system is working at maximum capacity.


5. Health


Almost half of office workers believe air conditioning spreads illness. You can keep the windows closed in an air conditioned room, making for an environment with lower pollen and lower pollution levels from the air outside. The humidity of the room will also be decreased controlling the level of mould spores in the air and any other bacteria. So overall an air conditioned workplace makes for a healthier workforce and will particularly help those who suffer from respiratory illnesses.

Contact Us for any information and to deal with any questions you may have.

5 Common Air Conditioner Issues in Winter

Autumn leaves are now appearing and winter is quickly approaching.

Homes, offices and retail spaces all benefit from air conditioning all year round and research has proven that productivity improves with quality air conditioned spaces. Workers perform better and customers feel better as we all like to be cool in the summer and warm in the winter.

If the worst should happen and you need assistance with your AC unit, RCL are available and offer a comprehensive 24 hour call out service. We come out and instruct our clients how to use your system and ensure the air-conditioning is balanced and working at optimal output.

Some common issues for you to look out for and hopefully prevent throughout the winter include:


Always keep your units free from obstruction to ensure your system doesn’t have to work any harder than necessary. This is important for both outdoor and indoor units.

Make sure nothing is blocking the indoor vents or air discharge points to enable your systems to run as efficiently as possible.


Set your thermostat controls to a reasonable level (even when you first turn on your system!). 23ºC is a reasonable temperature for homes and offices. A temperature of 30ºC for example is excessive and strains units unnecessarily.

When temperatures are cold, it’s important to position the louvers on the indoor units vertically (or as vertically as is possible) to force the heat down into the room and achieve maximum efficiency from your unit.

If a fault code does appear, the common solution of switching it off and back on is often the answer. Be sure to leave the system off for 10 seconds before restarting. The manual reset is the first thing any engineer will try when called out so save yourself some money by trying it yourself first.


When running in heating mode, air conditioning units stop producing heat from time to time. This allows the system to enter defrost mode, which is necessary to prevent ice and frost building up in the condenser coil. If you are not sure what is happening, wait to see if they start producing heat again before calling someone out.


Room air conditioner units feature a thermostat sensor. It’s located behind the control panel and measures the temperature of air coming into the evaporative coil. If the sensor is knocked out of position, the air conditioner could cycle constantly or behave erratically. The sensor should be near the coil but not touching it; adjust its position by carefully bending the wire that holds it in place.


If you’re using your air conditioning unit a lot during the winter months you’ll tend to find your filter gets a lot dirtier. This build up of dirt can cause a restriction in the air flow causing a knock on effect that makes the furnace have to work twice as hclean_and_dirty_ac_filter_magnificent_airard to maintain the right temperature. Simply check your filters at the very least once a month and replace them when necessary.




People often see water leaking from their outdoor condensers and assume that something is wrong. However, often when the condensers are surrounded by melting snow and ice, it’s completely normal for that to happen when in heating

CAUTION: Is there a public walkway or footpath beneath the condensers? The leaking water can turn into a slipping hazard if it freezes. Divert the water and allow it to drain into a safe area.

If you’re ever in need of professional assistance, please Contact us.


Top Tips on Heat Pumps: Winter Is Coming

Winter will be upon us fairly soon so it’s time to start thinking about keeping our homes nice and warm. For many people, their heating costs seem to rise every year. Most homes in the UK have gas central heating, but some use electricity, oil, or another type of fuel. What a lot of homeowners don’t consider is installing a different type of heating system. Although there is an initial cost, the resulting savings and possible efficiency levels are worth it. Heat pumps are an excellent alternative energy source to consider. They can be used to heat your home and the water you use. There are some excellent reasons you should consider them for your home this winter.

1. They’re Eco-friendly

One of the best reasons to get a pump for your home is that they are good for the environment. Heat pumps work by taking heat from the air or ground, which is then transferred to your home. The heat could be used to warm water, which would circulate around your heating system. It can also warm air, which can then heat your home through fans.dimplex-domestic-air-source-heat-pump Heat pumps also allow owners to benefit from the Government’s Renewable Heat Incentive (RHI). If your heat pump meets the requirements of the programme, you could receive a special tariff.


2. Heat Pumps Can Save You Money

As well as receiving money from the RHI, getting a heat pump could save you money. The systems can help to reduce your energy bills, although there are some things to consider. Buildings that currently run on a fuel such as oil or coal will see the benefit of a heat pump more quickly. If your home or business uses gas or electricity, it could take longer to see the financial benefit of installing a pump. It’s important to weigh up the cost of installation and lifetime use to see if you’ll be saving money. It’s also important to consider the condition of your home. Heat pumps work best when the property is well-insulated.

3. Choose Options

There are options to choose from if you are considering a heat pump for your home. Ground source heat pumps, and air source heat pumps are two primary types. Then there is the choice between air-to-water or air-to-air systems. Some pumps can also be used to cool the home, so they provide a double benefit when summer arrives. There are excellent additional benefits to some pumps. They might have an inbuilt air purifier or the ability to heat a swimming pool, for example. Choosing the best one depends on the building and your lifestyle.

4. Reduced Maintenance

Another benefit of a heat pump is that they don’t require a lot of maintenance. There are several types of heating system that might need regular fuel deliveries or repairs. Heat pumps can run on their own without much care from the owner. Once they’re installed, they can run on their own.

A heat pump is an excellent option for anyone considering a new heating system. Learn more and give yourself another option to consider.

To find out more, Contact us here at RCL.

Heat Wave – Why Is My AC Leaking?

The British summer has finally arrived, and while it could disappear as soon as it came, things are really hotting up around here.

We’re predicted 32C today, which is going to really put your cooling systems to the test!

Over the last week we’ve had an increased number of service calls, relating to air conditioning systems which are leaking water into the client’s premises.
On the cooling side of the AC system, the evaporator coil gets very cold. The idea is that warm air is passed through the evaporator coil, thus cooling the air down..which is then blown into the area you’re working in. This process creates moisture (much like the inside of your freezer).

The moisture that is created then has to go somewhere, usually outside of the building via a gravity or pumped drainage system.

The amount of moisture created can be exasperated by a number of things:

-) The refrigerant pressure in the evaporator is too low, causing it to get colder than designed and icing up
-) The air flow across the evaporator is restricted, for example because of a dirty filter or failed fan
-) High levels of ambient humidity

Anyway, this moisture has to go somewhere!

In summary, the water leaking from your ceiling area right now could be as a result of a number of different issues related to your air conditioning unit. Examples of these issues are

-) Blocked filters
-) Blocked coils
-) Blocked drainage system

There’s a pattern emerging! Water generally does as it’s told, and runs downhill (or if pumped, uphill). Problems occur when something gets in the way and the water starts to overflow!

RCL Air Conditioning operate nationwide with a team of highly trained service engineers. If you’re experiencing AC issues during this current heat wave, please feel free to contact us and we’ll help to find a solution.

Tips On Air Conditioner Maintenance From Industry Experts

Regular air conditioning maintenance is vital to keep your system going. Not only that, but it will keep you and your family healthier, and save a significant sum of money. So, if you want to keep your air con system efficient and working well, read on to find out more. These expert tips will give you all you need to know.

1. Change the Filter:

Changing the filter on your air conditioning unit is a pretty simple task. It’s also a vital part of a good maintenance plan. Dirt and grime can build up fast, which reduces the flow of air and slows down your unit. It also makes the system work harder, with worse results causing your air quality to decrease. Make sure you check your manufacturer’s guidelines before starting and maintenance. It will tell you how long a period you should leave it before changing the filter. You should also make manual checks on the cleanliness of your filter every month or so.

2. Clean the Vents:

You should also clean your vents if you want to improve the efficiency of your A/C unit. Again, vents attract dust and dirt, and they can end up harbouring allergens and bacteria. Long duster

Use a long duster to access any hard-to-reach parts. Make sure they are clear of any dust and wash the covers with a small sponge to ensure you remove everything.

3. Check To See If You’re Blocking The Condensing Unit:

Are you blocking your condensing unit and vents? It’s a common issue in many homes as neither are the most attractive things in the world. However, if you block up your system you only end up spending more money on energy costs, as it will need to work harder. Condensing units often pick up dirt, lawn clippings, twigs and lots of other debris. Once you clear it all out, you should also give it a hose down from the outside.

4. Shut Off The Power

Don’t forget to turn off the power before doing any work on your air conditioning unit. Electric shocks are all too common. And, there is an opportunity for you to hurt your hand with moving parts, too. It is always better to be safe than sorry. It may seem obvious but you should never work on anything electrical without turning off the power first.

5. Clean & Straighten The Fins

Finally, you will need to clean and straighten the fins. Air conditioning fins can be fragile, so take great care while you are working on this important aspect. Use a soft brush to do the job, so that you don’t crush or damage them. If they are bent, they can be straightened out. But, again, you need to be careful. Your owner’s manual should give you some hints and tips on how to deal with your AC unit’s fins, so make sure you read up before attempting any work.

We hope you find this brief guide useful. Get in touch if you have any problems with your air con systems!


Life Hack – Keeping Cool When The AC Breaks

It’s the middle of the summer, and your aircon has just broken down. Nightmare. While you’re waiting for someone to come out and fix it, it looks like you’re going to suffer miserably. Luckily, there are plenty of ways you can stay cool without your AC. They might not be as convenient or consistent, but they can still help you. Try out these foolproof methods to stop yourself going crazy with the heat.

Air conditioning maintenance

Switching the lights off will help to shift the heat

Stay in the Dark

Sunlight streaming through your windows is going to heat up your house. A lot of people are unsure about whether to have windows, curtains and blinds open or closed. During the day, keeping your blinds or curtains closed will keep out the sunshine. With doors, it’s best to keep them open and have the cool air flowing through the house.

Reassess Your Sleeping Situation

The hardest thing about scorching summers is often the nights. Trying to sleep without air conditioning can be next to impossible. If you don’t already change your sheets seasonally, it’s time to remake the bed with some cooler linens. Selecting cotton will help, since it breathes more easily. Of course, go light on the layers, so you don’t get too warm. When it’s time to put your PJs on, choose something loose and light. And there’s always going without if that’s more your thing. It probably goes without saying, but hot summer nights aren’t the best time to cuddle.

Air Conditioning Maintenance

A bowl of ice in front of the fan will help keep things cool!

Make Your Fans Ice Cool

You’ve probably got some fans going like crazy to try and keep the air circulating. But sometimes they can feel pretty ineffective. If you want to take them up a notch, make sure you have plenty of ice in your freezer. Fill a bowl with ice cubes and place it in front of a fan and you’ll get an icy cool breeze. Much better than your fans just circulating the same warm air.

Keep Your Temperature Down

It’s hard to change the temperature in your home when there’s no AC available. So you’re better off focusing on your body temperature instead. There are lots of things you can do to cool yourself down throughout the day. Drinking a cold drink or putting a cold cloth on pulse points like your wrists will bring your temperature down. A hot drink might also be able to cool you down. However, it only works if the sweat you produce can evaporate. So drink a coffee next to a fan. Choose your clothes carefully too so you don’t feel suffocated.

Open Up Your Home at Night

Making the most of the cooler nights in important. When the sun goes down, opening up some of your windows to let a breeze in will help. If you’re worried about bugs, get some netting up on the windows to keep them out. If there isn’t much of a breeze outside, set up your fans by the window. Just make sure you get up early so you can put the house on heat lockdown again.

All these things will help to keep you cool when your AC is on the fritz. However, using our 24-hour callout service to get it repaired ASAP will make sure you don’t have to suffer for long.

Air Conditioning Maintenance

Air Conditioning Maintenance EngineerAir conditioning is a feature found in many commercial properties throughout the UK. Sure, it helps people to stay cool during the warmer months of the year. But, it also helps to prevent the spread of airborne bacteria. It does so through the use of filters.

When air conditioners get used, we expect them to work at full capacity when we demand it. The trouble is: some companies don’t get regular air conditioning maintenance carried out! When that happens, systems are more likely to fail and be unreliable.

The importance of planned preventative maintenance

As with any device that gets used on a regular basis, air conditioners need maintenance. If you own or lease a building, you’ll want to ensure your systems work at all times. Some businesses see air conditioner maintenance as an unnecessary expense. But, it’s more important than they might think!

First of all, there is the total of ownership. Systems that don’t get maintained will soon need expensive repair work. And here is also the increased cost of electricity to consider. An air conditioner that has planned preventative maintenance will be more efficient to run. And that equates to cheaper electricity bills.

You might not think it, but air conditioners lose up to 5% efficiency each year. The longer a system goes without maintenance, the more inefficient it becomes. Plus, you could end up spending up to 25% more money powering your systems.

Better air quality

Large open spaces like offices, factories, and shopping malls have one thing in common. The risk of poor air quality can get increased in them! One way to reduce that risk is by having air conditioning systems properly maintained.

The result is people are less likely to get sick from airborne bacteria. Air conditioners do an excellent job of filtering the air that it blows out. But it can only do that if planned preventative maintenance occurs.

Lower operational cost

It’s no secret that some air conditioning units can cost thousands to repair. But, prevention is better than the cure, as they say. To lower one’s air conditioning operational costs, the solution is simple. Have planned maintenance checks carried out!

Why it makes sense to choose us for your maintenance needs

RCL Air Conditioning offers bespoke maintenance contracts that keep your systems running smooth. But, what makes us different from our competitors?

We are a firm that only have F-Gas compliant engineers. You may not know this, but back in 2014, the EU introduced a new regulation. It concerns the service and maintenance of air conditioning systems. The good news is our engineers fully comply with that regulation. As a result, you can be sure that all work gets carried out in a safe and legal way.

RCL will also make sure that you have a maintenance plan that suits your requirements. You will then end up with an air conditioning system that is far less likely to break down. Plus, you can ensure the health of those that enter your premises. Contact us today to find out more!