0800 254 5444

Air Conditioning Maintenance

What Climate Maintenance


What Climate never underestimate the importance of a regularly maintained system. It runs efficiently keeping costs down, and without doubt, leads to a longer life span subsequently protecting your valuable investment.

Maintenance is essential for air conditioning units not only to uphold warranties but also for breakdown prevention and avoiding costly repairs. An air conditioner's filters, coils, and fins require regular maintenance for the unit to function efficiently and effectively throughout its lifespan.

Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases. 

Importance of Air Conditioning Filters


One of the most important routine maintenance tasks for the efficiency of your air conditioning unit is to clean or replace its filters. Blocked, dirty filters have a huge impact on restricting normal airflow and restrict the system's efficiency greatly.

With normal airflow obstructed, the air that can no longer travel through the filter will gather directly into the evaporator coil and impair the coil's ability to absorb heat. 


Replacement of Air Conditioning Filters


Replacing a clogged filter with a clean one will certainly lower your air conditioner's energy consumption. Some types of filters can be used more than once, others must be replaced. They are available in different varieties and efficiencies. 

Replacement or cleaning of an air conditioning system's filter can sometimes be needed every two or three months during the summer season. Filters may need more frequent attention if the air conditioning is in constant use and is subjected to dusty conditions.

Evaporator and Condensing Coils


The air conditioning unit's indoor evaporator and external condenser coil collect dirt over months and years of usage. A clean/new filter prevents the evaporator coil from soiling quickly. In time, however, the evaporator coil will still collect dirt. This dirt reduces airflow and covers the coil, reducing its ability to absorb heat. Avoiding this problem is achievable by checking your evaporator coil annually and cleaning it as necessary.

Outdoor condenser coils can also become dirty if the outdoor environment is dusty or if there is foliage nearby. You can easily see the condenser coil and notice if dirt is collecting on its fins.

You should actively try to reduce dirt and debris near the condenser unit from things like falling leaves and general rubbish build up. Cleaning the area around the coil, removing any debris, weeds, and foliage back a suitable distance to allow for adequate airflow around the condenser.

Care of Aluminium Coil Fins


The aluminum fins on the condenser and evaporator coils are easily damaged and can restrict airflow through the coil. Care must be taken to ensure these stay in optimal condition and free from damage.

What Climate can offer a range of protective cages for the external units should security or vandalism be an issue.

Drainage for Condensate


Having clean unrestricted drainage is another important factor in the regular upkeep of an air conditioning unit and something that is always checked on regular maintenance. Pumps that remove condensate are tested, and gravity-fed drains routinely for blockages. Clogged drains can lead to a unit overspilling and the resulting excess moisture can stain walls or flooring.


What Climate recommends a six-monthly maintenance schedule. We also offer multiple unit discounts or a bespoke package to suit your needs, which can ensure your air conditioners are always performing at the highest possible level.

Our trained engineers will undertake a full health check on your systems and keep you fully up to date and inform you of any action needed to keep issues at a minimum and performance high.

We provide air conditioning maintenance services for the whole of Essex, East Anglia, and Greater London, including: Ipswich, Colchester, Chelmsford, Clacton on Sea, Harwich, Witham, London, Basildon, Brentwood, Norwich, Cambridge, Luton & Stevenage.

Have any questions about air conditioning maintenance, then speak to one of our friendly specialists on 0800 254 5444 / 07544 176 555 or email us at enquiries@whatclimate.co.uk

What Climate Annual Maintenance

When your air conditioner is due to its annual maintenance, a professional What Climate engineer is only just a call away. A well-trained technician will not only find and fix any problems in your air conditioning system but take the time and make the effort to prevent future issues.

As always, leave it to the trained professionals to ensure your units keep performing as they should and take all necessary steps to achieve optimal performance. 

The benefits of regular maintenance with What Climate include:

  • Lower energy bills
  • Prevent breakdowns
  • Enhance performance
  • Warranties are honoured
  • Bespoke air conditioning maintenance

Typical maintenance visit

  • Measure airflow through the evaporator coil
  • Inspect electric terminals
  • Clean and tighten connections
  • Oil/lubricate moving parts
  • Check belts for tightness and wear
  • Check the accuracy of the thermostat
  • Inspect and clean filters
  • Unit performance check
  • Inspect drainage
  • Electrical tightness test
  • All units are level
  • Louvre operation
  • Thermostat calibration
  • Clean inside evaporators
  • Air on/off temperatures
  • Clean condenser exterior
  • Remove vegetation from outdoor units
  • Dust and dirt removal from fan impellors
  • Lubricate moving parts
  • Check condensing coil temperature
  • Refrigerant gas pressures
  • Examine isolators
  • Check safety cut out devices
  • Report defects/ any faults