Affordable climate control and all-year comfort

What is Air Conditioning (AC)?

A brief introduction

Air conditioners blow cool air into your home by pulling the heat out of that air. The air is cooled by blowing it over a set of cold pipes called an evaporator coil. This works just like the cooling that happens when water evaporates from your skin. The evaporator coil is filled with a special liquid called a refrigerant, which changes from a liquid to a gas as it absorbs heat from the air.

The refrigerant is pumped outside the house to another coil where it gives up its heat and changes back into a liquid. This outside coil is called the condenser because the refrigerant is condensing from a gas back to a fluid just like moisture on a cold window. A pump, called a compressor, is used to move the refrigerant between the two coils and to change the pressure of the refrigerant so that the entire refrigerant evaporates or condenses in the appropriate coils.

The energy to do all of this is used by the motor that runs the compressor. The entire system will normally give about three times the cooling energy that the compressor uses. This odd fact happens because the changing of refrigerant from a liquid to a gas and back again lets the system move much more energy than the compressor uses.

Benefits of Air Conditioning

Cooling and heating both from the same unit
  • Most systems are capable of heating and cooling
  • There are a range of options and colours suitable for your home design
  • Relaxed and cooler night sleep for those hot and humid months
  • Easy to retrofit
  • Opening windows is a thing of the past as the air temperature in your room is so much cooler – resulting in a good night’s sleep

Air Conditioning Unit Options

A simple guide to the basic systems

Our recommendation would be to offer our customers Mitsubishi Electric air conditioning systems. A name synonymous with excellence. The bespoke maintenance package that we offer alongside the Mitsubishi equipment encompasses up to a 7 year fully comprehensive warranty on systems we install.


Wall Mounted Units

The wall mounted units are our most popular choice in the domestic market and are available in a range colours and capacity sizes.


Floor Mounted Units

Floor mounted units provide the best distribution of cool air and are ideally suited to being installed on an external wall. Floor mounted units also have the advantage of being encased to suit the aesthetics of your home.


Ceiling Mounted Units

Ceiling mounted units are more suited to the commercial market but they are also a viable option for those clients who have suitably sized roof voids to avoid the units being hung on useable wall space.

Book Your FREE Air Conditioning Survey Today

Contact us today and we will arrange your free initial site inspection as soon as possible to assess your property’s suitability, and discuss all of the air conditioning options available to you.


Air Conditioning Servicing

A cost effective way to ensure smooth, reliable and energy efficient operation

Pre-Planned Maintenance

As with most electronic equipment it is recommended servicing is carried out regularly in order to ensure the system maintains is its optimal running efficiency in terms of reliability and operation.

In a productive office, it is understandable that the servicing of your air conditioning system does not always take priority. We all have busy working agendas. We recommend however, that taking the decision to act sooner can save you both hundreds of pounds in downtime and call out fees.

Our bespoke pre-planned preventative maintenance visits which are available on a yearly basis would substantially help reduce the chance of a breakdown occurring and maintain your system manufacturer’s warranty*.

You wouldn’t run your car without a service or an oil change and nor should you with your air conditioning.

*Assuming your system is within the manufacturer’s warranty period.

10 Year Warranty

Abel Environmental is proud to be affiliated with Mitsubishi Electric as a Diamond Quality Partner. This qualification status enables us to offer up to a 10 year parts warranty on Mitsubishi Electric air conditioning products we install and subsequently maintain.

Contact Us For Servicing

Common Air Conditioning Problems

The main symptons

Many of the day-to-day air conditioning problems we encounter are caused by a lack of regular maintenance. We have listed below what we believe to be some of the main symptoms.

If you experience any of these issues please do not hesitate in contacting us to arrange an inspection, repair or service.

The two most common causes of your air conditioning system leaking is blocked drains or failed condensing pumps. Our expertly trained engineers will be able to quickly diagnose the cause of your issue and generally fix it in a very short period of time. We generally carry stock of the most common pumps in the market thus reducing your downtime.

Request Maintenance

Air conditioning system under performance is usually associated with dirty coils on indoor and outdoor units or a lack of refrigerant. Having a maintenance contract in place can significantly reduce call outs associated with this type of air conditioning problem as filters will be cleaned and in certain circumstances a refrigerant leak check is also carried out as part of our bespoke maintenance packages designed to prolong the life of your equipment.

Request Maintenance

As above the two most likely causes of condenser coils freezing is down to dirty coils or lack of refrigerant. As part of our maintenance package we will clean the outdoor condensing coil with industry standard condenser cleaner to ensure your system runs at optimum efficiency throughout the year.

Request Maintenance

If your AC unit is emitting unpleasant odours this is usually down to a lack of maintenance and or untreated / infrequently cleaned coils. In some circumstances this can also be due to a lack of ventilation within the room. It is important to remember that cassette and wall mounted air conditioning units only warm or cool the existing air and do not provide ventilation, so a lack of air changes in a room could contribute to bad odours.

Request Maintenance

Reduced airflow can be associated with something as simple as incorrect controls, louver failure or faulty fan motors. Its important to check that your controller is in the correct mode and the louver on the unit has opened the airways for the cool or warm air to escape. Our qualified engineers will be able to check the operation of the system and if necessary electrically test the function of the air conditioning unit.

Request Maintenance

The most common cause for rising energy bills is incorrectly set controls where the settings are set too high or two low. It is a common misconception that setting the controller down to 16 degrees will decrease the amount of time it takes to cool the room. Our air conditioning experts can discuss with you the most efficient way to control your air conditioning system. As part of our installation service we always ensure we provide a detailed handover to our clients to ensure they get the most out of their energy efficient air conditioning products.

Request Maintenance

General Air Conditioning Maintenance Checklist

We have highlighted below a short list of the some of the items which require checking during a normal air conditioning service visit.

Indoor Units

  • Clean filters
  • Clean evaporator coil
  • Check drip tray for dirt and debris
  • Clean and test condensate pump (where fitted)
  • Check all air on and air off temperatures in both cooling and heating
  • Check controls operation

Outdoor Units

  • Inspect and Clean Heat Exchanger
  • Check Visible signs for refrigerant leaks
  • Check pipework and lagging integrity
  • Check drip tray for dirt and debris
  • Check all air on and air off temperatures in both cooling and heating
  • Check electrical connections and tighten as necessary