Your Questions Our Answers

At MAC, we don’t just supply our customers with the best air conditioning units available on the market, we also do our utmost to support you throughout every stage of your air conditioning journey.

Here you'll find some quick and easy to follow answers to some of your most frequently asked questions, but if you still have doubts or queries, please do not hesitate to get in touch. We’re always happy to help.


Air Conditioning

The heat sign, sometimes referred to as the ‘sun symbol’ tells you that the air conditioning unit is in heat mode and is producing hot air. This sign represents the opposite of the snowflake sign, which produces cooler air. In the colder winter months, the sun sign will of course be popular, but you may want to think about swapping to the snowflake symbol over a hot summer period.

Turbo mode is a feature that activates a faster heating or cooling option to quickly reach the desired temperature in a room. The time it takes to reach this temperature can vary depending on the brand and type of air conditioner you have. This feature may also be referred to as "powerful," "jet," "fast," "high power," or something similar, depending on the brand of air conditioner you own.

When on heating mode, an air conditioning unit will not provide dehumidification. In order to dehumidify the air and remove moisture, the conditioner coil must be below the dew point, which does not happen when the sun sign is showing and you are on heat mode. AC units are designed in such a way as to provide comfortable indoor conditions. They can work to remove some moisture from rooms, but not when on heat mode and even so, they can only do so much.

When the heat mode on your air conditioner is turned on the unit will blow warm or hot air into the room until a set temperature is achieved. It may take some time for the fan to pump out hot air, as it will take some time for the AC to heat up and it won’t allow cold air to blow out before this is done.

This depends on several factors, including the size of the room where the unit will be and the type of system you want to purchase. One of the main things to consider is the British Thermal Unit (BTU) output, a measurement unit that tells you how much energy your AC unit uses to remove heat from your home within an hour. The higher the BTU, the more efficiently your air conditioning unit can cool a chosen room. A minimum BTU of 7,000 is usually preferred, or 25-30 BTU per square foot of living space and 10-15 BTU per square foot for heating.

However, it will depend on the size of the room in question. You can do a quick calculation to decide what BTU is best for you.

Measure your room in feet (height, width and depth), and then multiply the dimensions by five.

We would always recommend consulting with a professional to determine the precise size and type of HVAC system that will work best for you.

There could be several reasons why your split system air conditioner is not blowing cold air. Some possible causes include:

  1. Low refrigerant levels: If the refrigerant levels in the system are low, it can cause the air conditioner to blow warm air. This could be due to a leak in the system, which will need to be repaired by a professional.#
  2. Thermostat issues: If the thermostat is not working properly, it can cause the air conditioner to blow warm air. Check the thermostat's settings and remote batteries, and make sure it’s set to "cool" mode.
  3. Faulty compressor: If the compressor is not working properly, it can cause the air conditioner to blow warm air. This is a serious issue that will require the services of a professional HVAC technician to repair.

It's important to note that if your system is not blowing cold air, it's best to call the professionals, such as our team at MAC, to diagnose and fix the problem. Some of them may require specific knowledge or tools to repair.

When choosing an air conditioning unit, several factors should be considered, including the size of the room and the type of system desired. The British Thermal Unit (BTU) output, a measurement of the unit's energy efficiency, is a key consideration. A higher BTU means the unit can cool the room more efficiently. Typically, a minimum of 7,000 BTUs is preferred, or 25-30 BTUs per square foot of living space and 10-15 BTUs per square foot for heating. However, the specific BTU required will depend on the room size.

To determine the appropriate BTU for your space, you can do a simple calculation, multiplying the room's dimensions (height, width and depth) by five.

To get a much clearer idea on the details, you’ll need to find out what size air conditioning system would work best for you. To do this, we highly recommend using our handy pricing calculator. Using this, you can not only see what information will be needed, but you can benefit from more clarity on the pricing too.

You might be surprised to learn that your central heating system or air conditioning unit isn’t the only source of heat for your home. Supplemental heating can be defined as the addition of heat to a space in order to maintain a desired temperature. Used in combination with your main heating system, they can act as a sure-fire way to save money on your energy bills, whilst ensuring your home is heated to your liking.

Supplemental heat can come from radiators, space heaters, fireplaces and even the sun. They can also be used to heat specific rooms or areas of your home, aiding your main heating system so that it doesn’t become overworked or too costly.

Eco mode, also known as energy-saving mode or economy mode, is a feature found on some air conditioners. When activated, it adjusts the temperature and fan speed to reduce energy consumption and therefore can help you save on electricity costs. This is typically done by maintaining a slightly higher temperature setting and running the fan at a lower speed.

A dual-zone HVAC system is a heating, ventilation and air conditioning system that allows for independent temperature control in different areas of the house. This is achieved by using two thermostats, each controlling a separate HVAC unit or zone, rather than a single thermostat controlling the entire home or building. This allows for more efficient temperature control and energy savings, and you only need to install one AC unit.

Homes within the UK generally don’t have air conditioning due to the cooler climate. With this said, air conditioning units are becoming much more popular within the UK owing to the fact they offer several great benefits. First and foremost, AC units can be used to provide warm air in order to help heat your home, proving extremely helpful in the long winter months. In turn, air conditioning units within UK homes can help to reduce your energy bills. This is because they support your already existing heating sources, meaning you can use the central heating less. More and more UK homes are also starting to see the benefits of air conditioning units as a more environmentally friendly heating option, rather than using more traditional methods. Most modern AC units are rated ‘A’ for efficiency, improving the eco credentials of homes they are implemented in.

VRF and VRV respectively stand for ‘variable refrigerant volume’ and ‘variable refrigerant flow’. Both actually refer to the same HVAC technology with the latter simply being copyrighted by industry leader Daikin. VRF air conditioning systems use a variable refrigerant flow control to heat and cool multiple zones in a building. Taking advantage of multiple indoor units connected to a single outdoor unit, VRF AC systems allow for greater control over the temperature and airflow in each individual zone. This can lead to energy savings and increase your comfort levels for users.

Yes, it’s normal for the outdoor heat pump unit to be working in the winter. This is because the outdoor unit is absorbing the heat in the surrounding area, and yes, even cold air has heat. The indoor and outdoor counterparts to an AC system work in tandem to produce both heating and cooling effects.

A simple way to think about it is that an air conditioner moves heat from one place to another. When cooling it moves heat outside and when heating, it moves heat inside. This process still applies even in the cold winter weather as the refrigerant in the system, changing state between liquid and gas, is what either absorbs or releases heat. So yes, your outside unit should run when heat mode is on because the process involves both the indoor and outdoor units circulating refrigerant in the pipes. One wouldn’t be running without the other.

There is not one specific air conditioner that will always be the quietest. Several factors will determine which is the quietest unit that would also meet your needs. This includes the type of unit, the size and the specific features and technologies of the air conditioner.

On average, our indoor air conditioners will make 19-50 decibels of sound, whilst the corresponding outdoor unit will make about 46-50 decibels of sound. The air conditioning units that MAC provide are extremely quiet compared to the average and we therefore highly recommend looking at our collection. You can find out more about the sound produced by air conditioners in our article dedicated to sound or book a showroom tour to see the air conditioners we provide in action. 

An air conditioning service involves the cleaning and overseeing of your air conditioner unit to keep it running at an optimum level. At Midland Air Con, we offer both a call out and maintenance service. Our maintenance, or PPMs (planned preventative maintenance) will involve a trained engineer attending to perform a series of checks to ensure your air conditioning system is running smoothly. These visits will always be scheduled beforehand. We generally recommend that your AC system has a maintenance visit every 6 months, or at the least once a year.

It is absolutely worth investing in air conditioning systems if you live in the UK. Many people believe AC units are only useful in the hot summers to provide cool, refreshing air. Nevertheless, this is far from the truth. Air conditioning is also extremely useful in the cooler winter months and can provide a great source of heating, whether used alone or alongside your existing heating sources. The warm air they can provide will go a long way in providing comfort and cosiness throughout the long, British winter months that last for what feels like forever. This added benefit to the health and wellbeing of those in the home is priceless. for more information on this, you can find out more in our dedicated article here

There is no single air conditioning unit in the UK that we can point to as the absolutely best. This would be unique to everyone depending on their circumstances and needs. Despite this, we can point to some leading manufacturers that produce some of the most dependable, high-quality systems the UK has to offer.

MAC is proud to be a certified installer of AC units produced by world leaders in air conditioning, including Mitsubishi Electric, Toshiba and Daikin. As trusted brands, you can rest assured that their high-quality systems will provide a long-term solution to all your AC needs.

Portable air conditioners are standalone systems, ideal for cooling smaller spaces like an office, small bedroom or even a garage. As they're mobile you can easily move them from room to room as needed and they are also cheaper to purchase than an installed air conditioning systems. However, they are quite bulky and require a nearby window for their exhaust pipe to move heat energy outside. They're also louder and less energy efficient compared to an installed air conditioning system. 

Absolutely! Air conditioners fall under the category of air to air heat pumps, or more broadly referred to as air source heat pumps. Rather than producing their own heat, air source heat pumps transfer warmth from one location to another using latent heat energy in the air. There is another category of air source heat pump known as air to water, which is different from an air conditioning system. This variation of air source heat pump can also produce hot water for use in specialised radiators or underfloor heating, although they are more expensive to purchase and install in comparison. For more information on heat pumps, we recommend reading our dedicated article here

Modern air-conditioning systems are significantly more energy efficient than gas powered heating systems, which can reflect in a reduction in your energy bills as well as a range of health benefits. This includes their air purification features that can help ease allergies and improving air circulation to reduce build-up of bacteria and mould within a building. They also provide both heating and cooling to cater for both the summer and winter months of the year. Whilst the initial investment to purchase air conditioning may appear to be downside, you will start to recoup some of the cost from the savings you will make on your energy bills. Air conditioning systems will also not produce hot water, which does mean you will still need a heating system to produce this for you.

To find out can find more information concerning the benefits of air conditioning in our article here

The air purification features offered by air conditioning can assist in easing allergies and enhanced air circulation reduces the build up of harmful bacteria in the home. Some studies suggest that air conditioning can contribute to dehydration, whilst others how shown the effects are minimal, arguing that they can simply be counteracted by staying hydrated. 

EV Chargers

In most cases, planning permission is not required to install an EV charger at a residential property. Despite this, you will need to check with your local authorities before proceeding with installation to make sure you are compliant with any regulations. For example, on non-residential properties and where the property is in a conservation area or a heritage site you may need to apply for permission.

If you want our professional team to supply and install your EV charging point, you will need to have dedicated off-street parking, a wi-fi connection at your property (or a SIM router with 3G or 4G connection) and if you rent – permission from the landlord.

If there’s any doubt, we would always recommend calling our team of experts at MAC who will assist in answering any questions you may have.

The speed at which your EV charges depends on several factors, including the type of EV charger being used, the vehicle at hand and its onboard charging equipment. The time can range from as little as 30 minutes to as long as 12 hours. Generally, if you’re using a charger connected to an outlet at your home, it will take from 8-12 hours to fully charge. Whereas faster chargers found in car parks, service stations and petrol stations can range from 30 minutes to 6 hours. For more information on how long it may take to charge your EV, contact our team at Midland Air Conditioning .

A type 1 EV charger, also known as a J1772 charger, is a level 1 charging equipment that’s designed to charge EV’s at a power output of 3.7kW-7.4kW. It’s essential that you use a type 1 EV charger for charging a type 1 electric, like how you use the correct pump at a petrol station. These chargers typically provide a charging rate of about 2 to 5 miles of range per hour of charging.

Type 2 EV chargers are the standard cables for electric cars sold across Europe. They are universal connectors that fit to all standard charge point sockets, like how you plug in your smart phone. Type 2 EV chargers usually provide a charging rate of about 10 to 20 miles of range per hour of charging, from a power output that ranges from 3.7kW to 22kW. Usually found in shopping centres, gyms and car parks within cities and towns, type 2 sockets and cables now come as standard with all new fully electric vehicles in Europe.